diff --git a/app/Console/Commands/ExpirePaymentTransactions.php b/app/Console/Commands/ExpirePaymentTransactions.php
new file mode 100644
index 0000000..42682f8
--- /dev/null
+++ b/app/Console/Commands/ExpirePaymentTransactions.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\PaymentTransaction;
+use Illuminate\Console\Command;
+
+/**
+ * 支払期限切れトランザクションのステータス更新バッチ
+ */
+class ExpirePaymentTransactions extends Command
+{
+    protected $signature = 'payment:expire';
+    protected $description = '支払期限切れトランザクションのステータスを更新する';
+
+    public function handle(): int
+    {
+        $count = PaymentTransaction::where('status', '入金待ち')
+            ->whereNotNull('pay_limit')
+            ->where('pay_limit', '<', now())
+            ->update(['status' => '支払期限切れ']);
+
+        $this->info("支払期限切れ更新: {$count}件");
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/app/Exceptions/WellnetSoapException.php b/app/Exceptions/WellnetSoapException.php
new file mode 100644
index 0000000..a6d962b
--- /dev/null
+++ b/app/Exceptions/WellnetSoapException.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Exceptions;
+
+use RuntimeException;
+
+/**
+ * Wellnet SOAPエラー例外
+ */
+class WellnetSoapException extends RuntimeException
+{
+    private string $wellnetCode;
+
+    public function __construct(string $wellnetCode, string $message = '', ?\Throwable $previous = null)
+    {
+        $this->wellnetCode = $wellnetCode;
+        parent::__construct($message, 0, $previous);
+    }
+
+    /**
+     * Wellnetエラーコード取得
+     */
+    public function getWellnetCode(): string
+    {
+        return $this->wellnetCode;
+    }
+}
diff --git a/app/Http/Controllers/Api/CreditPaymentController.php b/app/Http/Controllers/Api/CreditPaymentController.php
new file mode 100644
index 0000000..4eb23cd
--- /dev/null
+++ b/app/Http/Controllers/Api/CreditPaymentController.php
@@ -0,0 +1,327 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Exceptions\WellnetSoapException;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Api\CreditLinkRequest;
+use App\Http\Requests\Api\SubscriptionChargeRequest;
+use App\Models\CreditPaymentLog;
+use App\Models\CreditSubscription;
+use App\Models\PaymentTransaction;
+use App\Services\Wellnet\PaymentLinkBuilder;
+use App\Services\Wellnet\WellnetCreditService;
+use App\Services\Wellnet\WellnetSoapService;
+use Illuminate\Http\JsonResponse;
+use RuntimeException;
+
+/**
+ * クレジット決済コントローラ（API 1.1 + 1.2）
+ */
+class CreditPaymentController extends Controller
+{
+    /**
+     * クレジット支払リンク生成（API 1.1）
+     *
+     * POST /api/newwipe/credit/link
+     */
+    public function createLink(
+        CreditLinkRequest $request,
+        WellnetSoapService $soapService,
+        PaymentLinkBuilder $linkBuilder
+    ): JsonResponse {
+        $validated = $request->validated();
+
+        // 受付番号の重複チェック
+        $existing = PaymentTransaction::where('syuno_recv_num', $validated['SyunoRecvNum'])->first();
+        if ($existing) {
+            // 期限切れ（DB未更新）を補正
+            if ($existing->status === '入金待ち' && $existing->pay_limit && $existing->pay_limit->lessThan(now())) {
+                $existing->update(['status' => '支払期限切れ']);
+            }
+
+            if ($existing->status === '入金済み') {
+                return response()->json([
+                    'error' => ['code' => 'E17', 'message' => '入金処理完了済みの受付番号です。']
+                ], 400);
+            }
+            if ($existing->status === '支払期限切れ') {
+                return response()->json([
+                    'error' => ['code' => 'E23', 'message' => '支払期限切れの受付番号です。']
+                ], 400);
+            }
+            if ($existing->status === '取消済み') {
+                return response()->json([
+                    'error' => ['code' => 'E24', 'message' => '取消済みの受付番号です。']
+                ], 400);
+            }
+
+            // 冪等対応：入金待ちの既存データがある場合は同一リンクを返す
+            if (!empty($existing->kessai_no) && $existing->status === '入金待ち') {
+                $creditUrl = $linkBuilder->buildCreditUrl($existing->kessai_no);
+                return response()->json([
+                    'result' => 'OK',
+                    'creditPaymentUrl' => $creditUrl,
+                    'SyunoRecvNum' => $existing->syuno_recv_num,
+                ]);
+            }
+
+            return response()->json([
+                'error' => ['code' => 'INVALID_REQUEST', 'message' => '既に登録済みの受付番号です。']
+            ], 400);
+        }
+
+        // SyunoFreeArray構築
+        $freeArray = $this->buildFreeArray($validated);
+
+        // SOAP送信データ構築
+        $inData = [
+            'SyunoRecvNum' => $validated['SyunoRecvNum'],
+            'SyunoTel' => $validated['SyunoTel'],
+            'SyunoNameKanji' => $validated['SyunoNameKanji'],
+            'SyunoPayLimit' => $validated['SyunoPayLimit'],
+            'SyunoPayAmount' => (string) $validated['SyunoPayAmount'],
+            'SyunoFreeArray' => $freeArray,
+        ];
+
+        if (!empty($validated['SyunoNameKana'])) {
+            $inData['SyunoNameKana'] = $validated['SyunoNameKana'];
+        }
+        if (!empty($validated['SyunoReserveNum'])) {
+            $inData['SyunoReserveNum'] = $validated['SyunoReserveNum'];
+        }
+
+        try {
+            // Wellnet受付登録
+            $result = $soapService->register($inData);
+        } catch (WellnetSoapException $e) {
+            $code = $e->getWellnetCode();
+            $errorCode = $this->normalizeWellnetErrorCode($code);
+            return response()->json([
+                'error' => [
+                    'code' => $errorCode,
+                    'message' => 'Wellnet受付登録に失敗しました: ' . $e->getMessage(),
+                ]
+            ], 400);
+        } catch (RuntimeException $e) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E99',
+                    'message' => 'Wellnet通信エラー: ' . $e->getMessage(),
+                ]
+            ], 500);
+        }
+
+        $kessaiNo = $result['KKessaiNo'];
+
+        // 決済リンク生成
+        $creditUrl = $linkBuilder->buildCreditUrl($kessaiNo);
+
+        // トランザクション保存
+        PaymentTransaction::create([
+            'syuno_recv_num' => $validated['SyunoRecvNum'],
+            'payment_type' => 'credit',
+            'status' => '入金待ち',
+            'amount' => $validated['SyunoPayAmount'],
+            'pay_limit' => $this->parsePayLimit($validated['SyunoPayLimit']),
+            'kessai_no' => $kessaiNo,
+            'name_kanji' => $validated['SyunoNameKanji'],
+            'name_kana' => $validated['SyunoNameKana'] ?? null,
+            'tel' => $validated['SyunoTel'],
+            'subscription_flg' => $validated['subscription_flg'],
+            'free_area' => $this->buildFreeAreaJson($validated),
+            'wellnet_response' => json_encode($result, JSON_UNESCAPED_UNICODE),
+        ]);
+
+        return response()->json([
+            'result' => 'OK',
+            'creditPaymentUrl' => $creditUrl,
+            'SyunoRecvNum' => $validated['SyunoRecvNum'],
+        ]);
+    }
+
+    /**
+     * 継続課金請求（API 1.2）
+     *
+     * POST /api/newwipe/credit/subscription/charge
+     */
+    public function chargeSubscription(
+        SubscriptionChargeRequest $request,
+        WellnetCreditService $creditService
+    ): JsonResponse {
+        $validated = $request->validated();
+
+        // 継続課金会員情報取得
+        $subscription = CreditSubscription::where('credit_member_id', $validated['member_id'])
+            ->where('subscription_status', 1)
+            ->first();
+
+        if (!$subscription) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E21',
+                    'message' => '継続課金が未登録です。',
+                ]
+            ], 400);
+        }
+
+        $cardSeq = $validated['card_seq'] ?? $subscription->credit_card_seq;
+
+        // execute_date（ログ用途）
+        $executeDate = $validated['execute_date'];
+        $executeDateParsed = \Carbon\Carbon::createFromFormat('Ymd', $executeDate, 'Asia/Tokyo')->startOfDay();
+        $today = \Carbon\Carbon::now('Asia/Tokyo')->startOfDay();
+
+        // execute_dateをDB保存用に変換（YYYYMMDD → YYYY-MM-DD）
+        $executeDateFormatted = $executeDateParsed->format('Y-m-d');
+
+        // api.pdf 上は execute_date の制約が明記されていないため、日付の実在性のみをバリデーションで担保し、
+        // ここでは未来日/過去日の制限は行わずそのまま処理する。
+
+        // 請求履歴レコード作成（processing）
+        $log = CreditPaymentLog::create([
+            'credit_subscription_id' => $subscription->credit_subscription_id,
+            'contract_id' => $validated['contract_id'],
+            'user_id' => $subscription->user_id,
+            'request_amount' => $validated['amount'],
+            'execute_date' => $executeDateFormatted,
+            'request_at' => now(),
+            'status' => 'pending',
+        ]);
+
+        try {
+            // 与信照会
+            $authResult = $creditService->authorize(
+                $subscription->credit_member_id,
+                $validated['amount'],
+                $cardSeq
+            );
+
+            $paymentNumber = $authResult['paymentNumber'] ?? null;
+
+            // 売上確定
+            $creditService->capture($paymentNumber);
+
+            // 成功時の履歴更新
+            $log->update([
+                'response_result' => 'OK',
+                'payment_number' => $paymentNumber,
+                'status' => 'success',
+            ]);
+
+            // payment_transactionにも記録（返金用にpayment_numberを保持）
+            // syuno_recv_numは20文字以内の英数字で生成（契約IDの文字種に依存しない）
+            $syunoRecvNum = 'S' . substr(hash('sha256', $validated['contract_id'] . '|' . $executeDate), 0, 19);
+            PaymentTransaction::create([
+                'syuno_recv_num' => $syunoRecvNum,
+                'payment_type' => 'credit',
+                'status' => '入金済み',
+                'amount' => $validated['amount'],
+                'payment_number' => $paymentNumber,
+                'subscription_flg' => 1,
+                'paid_datetime' => now(),
+            ]);
+
+            return response()->json([
+                'result' => 'OK',
+                'contract_id' => $validated['contract_id'],
+                'member_id' => $validated['member_id'],
+            ]);
+
+        } catch (RuntimeException $e) {
+            // エラー時の履歴更新
+            $log->update([
+                'response_result' => 'NG',
+                'response_message' => $e->getMessage(),
+                'status' => 'error',
+            ]);
+
+            $mapped = $this->mapCreditException($e);
+            return response()->json([
+                'error' => [
+                    'code' => $mapped['code'],
+                    'message' => $mapped['message'],
+                ]
+            ], $mapped['http']);
+        }
+    }
+
+    /**
+     * SyunoFreeArray構築（Index付き配列）
+     */
+    private function buildFreeArray(array $validated): array
+    {
+        $freeArray = [];
+        for ($i = 1; $i <= 23; $i++) {
+            $key = 'SyunoFree' . $i;
+            if (isset($validated[$key]) && $validated[$key] !== '') {
+                $freeArray[$i] = $validated[$key];
+            }
+        }
+        return $freeArray;
+    }
+
+    /**
+     * Free AreaをJSON保存用に構築
+     */
+    private function buildFreeAreaJson(array $validated): ?array
+    {
+        $freeArea = [];
+        for ($i = 1; $i <= 23; $i++) {
+            $key = 'SyunoFree' . $i;
+            if (isset($validated[$key]) && $validated[$key] !== '') {
+                $freeArea[$key] = $validated[$key];
+            }
+        }
+        return !empty($freeArea) ? $freeArea : null;
+    }
+
+    /**
+     * 支払期限文字列（YYYYMMDDhhmm）をdatetime形式に変換
+     */
+    private function parsePayLimit(string $payLimit): string
+    {
+        // YYYYMMDDhhmm → YYYY-MM-DD hh:mm:00
+        return substr($payLimit, 0, 4) . '-'
+            . substr($payLimit, 4, 2) . '-'
+            . substr($payLimit, 6, 2) . ' '
+            . substr($payLimit, 8, 2) . ':'
+            . substr($payLimit, 10, 2) . ':00';
+    }
+
+    /**
+     * WellnetエラーコードをAPIエラーコード形式へ正規化
+     */
+    private function normalizeWellnetErrorCode(string $code): string
+    {
+        if (!ctype_digit($code)) {
+            return $code;
+        }
+        $trimmed = ltrim($code, '0');
+        return 'R' . ($trimmed === '' ? '0' : $trimmed);
+    }
+
+    /**
+     * クレジットAPIの例外をAPIエラーへマップ
+     */
+    private function mapCreditException(RuntimeException $e): array
+    {
+        $status = (int) $e->getCode();
+        $message = $e->getMessage();
+
+        if ($status === 401 || $status === 403) {
+            return ['code' => 'E01', 'message' => '利用不可: ' . $message, 'http' => 400];
+        }
+        if ($status === 404) {
+            return ['code' => 'E02', 'message' => 'データエラー: ' . $message, 'http' => 400];
+        }
+        if ($status === 400) {
+            return ['code' => 'E09', 'message' => 'データエラー: ' . $message, 'http' => 400];
+        }
+        if (str_contains($message, 'INVALID_OPERATION')) {
+            return ['code' => 'E13', 'message' => 'データエラー: ' . $message, 'http' => 400];
+        }
+
+        return ['code' => 'E99', 'message' => '継続課金処理に失敗しました: ' . $message, 'http' => 500];
+    }
+}
diff --git a/app/Http/Controllers/Api/PaymentCallbackController.php b/app/Http/Controllers/Api/PaymentCallbackController.php
new file mode 100644
index 0000000..7653d2e
--- /dev/null
+++ b/app/Http/Controllers/Api/PaymentCallbackController.php
@@ -0,0 +1,218 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Models\PaymentTransaction;
+use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+
+/**
+ * 決済結果通知（callback）受信コントローラ（API 3）
+ */
+class PaymentCallbackController extends Controller
+{
+    /**
+     * パラメータマッピング（短縮名 → 論理名）
+     */
+    private const PARAM_MAP = [
+        'ret' => 'ret',
+        'scd' => 'SyunoPayCode',
+        'rno' => 'SyunoRecvNum',
+        'kcd' => 'SyunoCorpCode',
+        'sdt' => 'SyunoReserveDateTime',
+        'ccd' => 'CvsCode',
+        'tcd' => 'SyunoStoreCode',
+        'nno' => 'MmsNumber',
+        'ndt' => 'SyunoPayDatetime',
+        'pri' => 'SyunoPayAmount',
+        'ifg' => 'StampFlag',
+        'pwd' => 'Md5Hash',
+    ];
+
+    /**
+     * 入金通知受信
+     *
+     * POST /api/newwipe/callback
+     */
+    public function receive(Request $request): Response
+    {
+        try {
+            // Wellnet疎通確認用のGET（パラメータなし）は常に200+000で応答
+            if ($request->isMethod('get') && $request->all() === []) {
+                return response('000', 200)->header('Content-Type', 'text/plain');
+            }
+
+            // パラメータ解析（短縮名・論理名 両方対応）
+            $params = $this->parseParams($request);
+
+            $retRaw = (string) ($params['ret'] ?? '');
+            $scdRaw = (string) ($params['scd'] ?? '');
+            $rnoRaw = (string) ($params['rno'] ?? '');
+            $kcdRaw = (string) ($params['kcd'] ?? '');
+            $pwdRaw = (string) ($params['pwd'] ?? '');
+            $ndt = (string) ($params['ndt'] ?? '');
+            $tcd = (string) ($params['tcd'] ?? '');
+            $ccd = (string) ($params['ccd'] ?? '');
+            $priRaw = (string) ($params['pri'] ?? '');
+
+            // 仕様上、各項目が空白埋めされる可能性があるためトリム値も用意
+            $ret = trim($retRaw);
+            $scd = trim($scdRaw);
+            $rno = trim($rnoRaw);
+            $kcd = trim($kcdRaw);
+            $pwd = trim($pwdRaw);
+            $pri = trim($priRaw);
+
+            if ($rno === '') {
+                return response('600', 200)->header('Content-Type', 'text/plain');
+            }
+
+            // MD5検証
+            $secretKey = config('wellnet.callback.md5_secret');
+            if (empty($secretKey)) {
+                if (app()->environment('production')) {
+                    \Illuminate\Support\Facades\Log::critical('WELLNET_MD5_SECRET未設定のためcallback拒否');
+                    return response('800', 200)->header('Content-Type', 'text/plain');
+                }
+                \Illuminate\Support\Facades\Log::warning('WELLNET_MD5_SECRET未設定: MD5検証スキップ');
+            } else {
+                // 空白埋めの有無によりMD5算出対象が異なる可能性があるため、raw/trimの両方を許容
+                $expectedHashRaw = md5("ret{$retRaw}scd{$scdRaw}rno{$rnoRaw}{$secretKey}");
+                $expectedHashTrim = md5("ret{$ret}scd{$scd}rno{$rno}{$secretKey}");
+                if ($pwd !== $expectedHashRaw && $pwd !== $expectedHashTrim) {
+                    return response('800', 200)->header('Content-Type', 'text/plain');
+                }
+            }
+
+            // トランザクション検索
+            $transaction = PaymentTransaction::where('syuno_recv_num', $rno)->first();
+            if (!$transaction) {
+                return response('600', 200)->header('Content-Type', 'text/plain');
+            }
+
+            // pay_code / corp_code / 金額の整合性チェック（データ不備扱い）
+            $expectedPayCode = (string) config('wellnet.payment.pay_code', '');
+            if ($expectedPayCode !== '' && $scd !== '' && $scd !== $expectedPayCode) {
+                return response('600', 200)->header('Content-Type', 'text/plain');
+            }
+            $expectedCorpCode = (string) config('wellnet.payment.corp_code', '');
+            if ($expectedCorpCode !== '' && $kcd !== '' && $kcd !== $expectedCorpCode) {
+                return response('600', 200)->header('Content-Type', 'text/plain');
+            }
+            if ($pri !== '' && ctype_digit($pri)) {
+                if ((int) $pri !== (int) $transaction->amount) {
+                    return response('600', 200)->header('Content-Type', 'text/plain');
+                }
+            }
+
+            // 冪等性チェック：既に入金済みの場合は正常応答
+            if ($transaction->status === '入金済み') {
+                return response('000', 200)->header('Content-Type', 'text/plain');
+            }
+
+            // retが"000"（正常入金）でない場合はステータス更新しない
+            if ($ret !== '000') {
+                return response('000', 200)->header('Content-Type', 'text/plain');
+            }
+
+            // ステータス更新
+            $updateData = [
+                'status' => '入金済み',
+            ];
+
+            if (!empty($ndt)) {
+                $updateData['paid_datetime'] = $this->parseDatetime($ndt);
+            }
+            if (!empty($tcd)) {
+                $updateData['store_code'] = $tcd;
+            }
+            if (!empty($ccd)) {
+                $updateData['cvs_code'] = $ccd;
+            }
+
+            // クレジット決済の場合、CAFIS決済番号（paymentNumber）が送られてくる契約形態に備えて保存
+            $paymentNumber = $request->input('paymentNumber')
+                ?? $request->input('payment_number')
+                ?? $request->input('paymentnumber')
+                ?? $request->input('pno')
+                ?? null;
+            if (!empty($paymentNumber) && empty($transaction->payment_number)) {
+                $updateData['payment_number'] = $paymentNumber;
+            }
+
+            $transaction->update($updateData);
+
+            return response('000', 200)->header('Content-Type', 'text/plain');
+        } catch (\Throwable $e) {
+            \Illuminate\Support\Facades\Log::error('Wellnet callback処理エラー: ' . $e->getMessage(), [
+                'exception' => $e,
+            ]);
+            return response('100', 200)->header('Content-Type', 'text/plain');
+        }
+    }
+
+    /**
+     * リクエストパラメータ解析（短縮名・論理名 両方対応）
+     */
+    private function parseParams(Request $request): array
+    {
+        $params = [];
+
+        // 短縮名で取得
+        $shortNames = ['ret', 'scd', 'rno', 'kcd', 'sdt', 'ccd', 'tcd', 'nno', 'ndt', 'pri', 'ifg', 'pwd'];
+        foreach ($shortNames as $name) {
+            $value = $request->input($name);
+            if ($value !== null) {
+                $params[$name] = $value;
+            }
+        }
+
+        // 論理名でも取得（短縮名が無い場合のフォールバック）
+        $logicalMap = [
+            'SyunoRecvNum' => 'rno',
+            'SyunoPayCode' => 'scd',
+            'SyunoCorpCode' => 'kcd',
+            'SyunoPayDatetime' => 'ndt',
+            'SyunoPayAmount' => 'pri',
+            'SyunoStoreCode' => 'tcd',
+            'CvsCode' => 'ccd',
+            'Md5Hash' => 'pwd',
+        ];
+
+        foreach ($logicalMap as $logical => $short) {
+            if (!isset($params[$short])) {
+                $value = $request->input($logical);
+                if ($value !== null) {
+                    $params[$short] = $value;
+                }
+            }
+        }
+
+        // retが未設定の場合のフォールバック
+        if (!isset($params['ret'])) {
+            $value = $request->input('result');
+            if ($value !== null) {
+                $params['ret'] = $value;
+            }
+        }
+
+        return $params;
+    }
+
+    /**
+     * Wellnet日時文字列（YYYYMMDDHHMMSS）をdatetime形式に変換
+     */
+    private function parseDatetime(string $datetime): string
+    {
+        if (strlen($datetime) >= 14) {
+            return substr($datetime, 0, 4) . '-'
+                . substr($datetime, 4, 2) . '-'
+                . substr($datetime, 6, 2) . ' '
+                . substr($datetime, 8, 2) . ':'
+                . substr($datetime, 10, 2) . ':'
+                . substr($datetime, 12, 2);
+        }
+        return $datetime;
+    }
+}
diff --git a/app/Http/Controllers/Api/PaymentStatusController.php b/app/Http/Controllers/Api/PaymentStatusController.php
new file mode 100644
index 0000000..10f7260
--- /dev/null
+++ b/app/Http/Controllers/Api/PaymentStatusController.php
@@ -0,0 +1,82 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Models\PaymentTransaction;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+/**
+ * 決済ステータス取得コントローラ（API 4）
+ */
+class PaymentStatusController extends Controller
+{
+    /**
+     * 決済ステータス取得
+     *
+     * GET /api/newwipe/status?SyunoRecvNum=...
+     */
+    public function show(Request $request): JsonResponse
+    {
+        $syunoRecvNum = $request->query('SyunoRecvNum');
+
+        if (empty($syunoRecvNum)) {
+            return response()->json([
+                'error' => [
+                    'code' => 'INVALID_REQUEST',
+                    'message' => 'SyunoRecvNumは必須です。',
+                ]
+            ], 400);
+        }
+        if (!preg_match('/^[a-zA-Z0-9]{1,20}$/', (string) $syunoRecvNum)) {
+            return response()->json([
+                'error' => [
+                    'code' => 'INVALID_REQUEST',
+                    'message' => 'SyunoRecvNumの形式が不正です。',
+                ]
+            ], 400);
+        }
+
+        $transaction = PaymentTransaction::where('syuno_recv_num', $syunoRecvNum)->first();
+
+        if (!$transaction) {
+            return response()->json([
+                'error' => [
+                    'code' => 'DATA_NOT_FOUND',
+                    'message' => '指定された受付番号のデータが見つかりません。',
+                ]
+            ], 404);
+        }
+
+        // レスポンス構築
+        $response = [
+            'SyunoRecvNum' => $transaction->syuno_recv_num,
+            'status' => $transaction->status,
+            'amount' => $transaction->amount,
+            'payLimit' => $transaction->pay_limit ? $transaction->pay_limit->toIso8601String() : null,
+        ];
+
+        // 入金済みの場合は追加情報
+        if ($transaction->status === '入金済み') {
+            $response['paidDateTime'] = $transaction->paid_datetime
+                ? $transaction->paid_datetime->toIso8601String()
+                : null;
+            $response['storeCode'] = $transaction->store_code;
+            $response['storeName'] = $this->getStoreName($transaction->store_code);
+        }
+
+        return response()->json($response);
+    }
+
+    /**
+     * 店舗コードから店舗名を取得
+     */
+    private function getStoreName(?string $storeCode): ?string
+    {
+        if (empty($storeCode)) {
+            return null;
+        }
+        return config('wellnet.store_codes.' . $storeCode);
+    }
+}
diff --git a/app/Http/Controllers/Api/PaymentUpdateController.php b/app/Http/Controllers/Api/PaymentUpdateController.php
new file mode 100644
index 0000000..a8b946e
--- /dev/null
+++ b/app/Http/Controllers/Api/PaymentUpdateController.php
@@ -0,0 +1,290 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Exceptions\WellnetSoapException;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Api\PaymentUpdateRequest;
+use App\Models\PaymentTransaction;
+use App\Services\Wellnet\WellnetSoapService;
+use Illuminate\Http\JsonResponse;
+use RuntimeException;
+
+/**
+ * 決済情報更新コントローラ（API 5）
+ */
+class PaymentUpdateController extends Controller
+{
+    /**
+     * 決済情報更新/取消
+     *
+     * PUT /api/newwipe/update
+     */
+    public function update(
+        PaymentUpdateRequest $request,
+        WellnetSoapService $soapService
+    ): JsonResponse {
+        $validated = $request->validated();
+
+        // トランザクション検索
+        $transaction = PaymentTransaction::where('syuno_recv_num', $validated['SyunoRecvNum'])->first();
+
+        if (!$transaction) {
+            return response()->json([
+                'error' => [
+                    // api.pdf の更新APIでは「未存在/見つからない」専用コードが無いため、実質的に削除済み扱いとする
+                    'code' => 'E24',
+                    'message' => '該当の支払データは既に削除済みです。',
+                ]
+            ], 400);
+        }
+
+        // ステータスチェック
+        if ($transaction->status === '入金済み') {
+            return response()->json([
+                'error' => [
+                    'code' => 'E17',
+                    'message' => '入金処理完了済みのため更新できません。',
+                ]
+            ], 400);
+        }
+
+        if ($transaction->status === '取消済み') {
+            return response()->json([
+                'error' => [
+                    'code' => 'E24',
+                    'message' => '既に取消済みです。',
+                ]
+            ], 400);
+        }
+
+        // 期限切れ（DB未更新）を補正：更新は不可（取消は可）
+        if ($transaction->status === '入金待ち' && $transaction->pay_limit && $transaction->pay_limit->lessThan(now())) {
+            $transaction->update(['status' => '支払期限切れ']);
+        }
+
+        // 取消処理
+        $cancelFlag = $validated['cancelFlag'] ?? null;
+        if ($cancelFlag === true || $cancelFlag === 'true') {
+            return $this->handleCancel($transaction, $soapService);
+        }
+
+        // 変更項目が一つも無い場合はエラー
+        $updatableKeys = [
+            'SyunoPayLimit', 'SyunoPayAmount', 'SyunoNameKanji', 'SyunoNameKana', 'SyunoTel',
+            'SyunoFree1', 'SyunoFree2', 'SyunoFree3', 'SyunoFree4', 'SyunoFree5', 'SyunoFree6',
+            'SyunoFree7', 'SyunoFree8', 'SyunoFree9', 'SyunoFree10', 'SyunoFree11', 'SyunoFree12',
+            'SyunoFree13', 'SyunoFree14', 'SyunoFree15', 'SyunoFree16', 'SyunoFree17', 'SyunoFree18',
+            'SyunoFree19',
+            'SyunoFree20', 'SyunoFree21',
+        ];
+        $hasUpdate = false;
+        foreach ($updatableKeys as $key) {
+            if (array_key_exists($key, $validated)) {
+                $hasUpdate = true;
+                break;
+            }
+        }
+        if (!$hasUpdate) {
+            return response()->json([
+                'error' => [
+                    'code' => 'INVALID_REQUEST',
+                    'message' => '更新項目が指定されていません。',
+                ]
+            ], 400);
+        }
+
+        // 期限切れチェック（更新の場合のみ、取消は可能）
+        if ($transaction->status === '支払期限切れ') {
+            return response()->json([
+                'error' => [
+                    'code' => 'E23',
+                    'message' => '支払期限切れのため更新できません。',
+                ]
+            ], 400);
+        }
+
+        // 更新処理
+        return $this->handleUpdate($transaction, $validated, $soapService);
+    }
+
+    /**
+     * 取消処理
+     */
+    private function handleCancel(
+        PaymentTransaction $transaction,
+        WellnetSoapService $soapService
+    ): JsonResponse {
+        try {
+            $soapService->cancel($transaction->syuno_recv_num);
+        } catch (WellnetSoapException $e) {
+            $code = $e->getWellnetCode();
+            $errorCode = $this->normalizeWellnetErrorCode($code);
+            return response()->json([
+                'error' => [
+                    'code' => $errorCode,
+                    'message' => 'Wellnet取消処理に失敗しました: ' . $e->getMessage(),
+                ]
+            ], 400);
+        } catch (RuntimeException $e) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E99',
+                    'message' => 'Wellnet通信エラー: ' . $e->getMessage(),
+                ]
+            ], 500);
+        }
+
+        $transaction->update(['status' => '取消済み']);
+
+        return response()->json([
+            'updateStatus' => 'CANCELLED',
+            'SyunoRecvNum' => $transaction->syuno_recv_num,
+            'status' => '取消済み',
+        ]);
+    }
+
+    /**
+     * 更新処理
+     */
+    private function handleUpdate(
+        PaymentTransaction $transaction,
+        array $validated,
+        WellnetSoapService $soapService
+    ): JsonResponse {
+        // 変更対象フィールドの抽出
+        $inData = [
+            'SyunoRecvNum' => $validated['SyunoRecvNum'],
+        ];
+
+        // 基本フィールド
+        $updateFields = ['SyunoPayLimit', 'SyunoPayAmount', 'SyunoNameKanji', 'SyunoNameKana', 'SyunoTel'];
+        foreach ($updateFields as $field) {
+            if (isset($validated[$field])) {
+                $inData[$field] = $field === 'SyunoPayAmount'
+                    ? (string) $validated[$field]
+                    : $validated[$field];
+            }
+        }
+
+        // Free Area構築（未指定項目は'*'で送信）
+        $freeArray = [];
+        for ($i = 1; $i <= 21; $i++) {
+            $key = 'SyunoFree' . $i;
+            if (isset($validated[$key])) {
+                $freeArray[$i] = $validated[$key];
+            } else {
+                $freeArray[$i] = '*';
+            }
+        }
+        $inData['SyunoFreeArray'] = $freeArray;
+
+        try {
+            $soapService->update($inData);
+        } catch (WellnetSoapException $e) {
+            $code = $e->getWellnetCode();
+            $errorCode = $this->normalizeWellnetErrorCode($code);
+            return response()->json([
+                'error' => [
+                    'code' => $errorCode,
+                    'message' => 'Wellnet更新処理に失敗しました: ' . $e->getMessage(),
+                ]
+            ], 400);
+        } catch (RuntimeException $e) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E99',
+                    'message' => 'Wellnet通信エラー: ' . $e->getMessage(),
+                ]
+            ], 500);
+        }
+
+        // ローカルDB更新
+        $dbUpdate = [];
+        if (isset($validated['SyunoPayLimit'])) {
+            $dbUpdate['pay_limit'] = $this->parsePayLimit($validated['SyunoPayLimit']);
+        }
+        if (isset($validated['SyunoPayAmount'])) {
+            $dbUpdate['amount'] = $validated['SyunoPayAmount'];
+        }
+        if (isset($validated['SyunoNameKanji'])) {
+            $dbUpdate['name_kanji'] = $validated['SyunoNameKanji'];
+        }
+        if (isset($validated['SyunoNameKana'])) {
+            $dbUpdate['name_kana'] = $validated['SyunoNameKana'];
+        }
+        if (isset($validated['SyunoTel'])) {
+            $dbUpdate['tel'] = $validated['SyunoTel'];
+        }
+
+        // Free Area JSONも更新
+        $freeAreaJson = $transaction->free_area ?? [];
+        for ($i = 1; $i <= 21; $i++) {
+            $key = 'SyunoFree' . $i;
+            if (isset($validated[$key])) {
+                $freeAreaJson[$key] = $validated[$key];
+            }
+        }
+        $dbUpdate['free_area'] = $freeAreaJson;
+
+        if (!empty($dbUpdate)) {
+            $transaction->update($dbUpdate);
+        }
+
+        // 最新の状態を取得
+        $transaction->refresh();
+
+        $response = [
+            'updateStatus' => 'UPDATED',
+            'SyunoRecvNum' => $transaction->syuno_recv_num,
+            'amount' => $transaction->amount,
+            'status' => $transaction->status,
+        ];
+
+        if (isset($validated['SyunoPayLimit'])) {
+            $response['newPayLimit'] = $this->parsePayLimitIso8601($validated['SyunoPayLimit']);
+        }
+        if (isset($validated['SyunoPayAmount'])) {
+            $response['newPayAmount'] = $validated['SyunoPayAmount'];
+        }
+
+        return response()->json($response);
+    }
+
+    /**
+     * 支払期限文字列（YYYYMMDDhhmm）をdatetime形式に変換（DB保存用）
+     */
+    private function parsePayLimit(string $payLimit): string
+    {
+        return substr($payLimit, 0, 4) . '-'
+            . substr($payLimit, 4, 2) . '-'
+            . substr($payLimit, 6, 2) . ' '
+            . substr($payLimit, 8, 2) . ':'
+            . substr($payLimit, 10, 2) . ':00';
+    }
+
+    /**
+     * 支払期限文字列（YYYYMMDDhhmm）をISO8601形式に変換（レスポンス用）
+     */
+    private function parsePayLimitIso8601(string $payLimit): string
+    {
+        $datetime = substr($payLimit, 0, 4) . '-'
+            . substr($payLimit, 4, 2) . '-'
+            . substr($payLimit, 6, 2) . 'T'
+            . substr($payLimit, 8, 2) . ':'
+            . substr($payLimit, 10, 2) . ':00+09:00';
+        return $datetime;
+    }
+
+    /**
+     * WellnetエラーコードをAPIエラーコード形式へ正規化
+     */
+    private function normalizeWellnetErrorCode(string $code): string
+    {
+        if (!ctype_digit($code)) {
+            return $code;
+        }
+        $trimmed = ltrim($code, '0');
+        return 'R' . ($trimmed === '' ? '0' : $trimmed);
+    }
+}
diff --git a/app/Http/Controllers/Api/RefundController.php b/app/Http/Controllers/Api/RefundController.php
new file mode 100644
index 0000000..55ace90
--- /dev/null
+++ b/app/Http/Controllers/Api/RefundController.php
@@ -0,0 +1,186 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Api\RefundRequest;
+use App\Models\PaymentTransaction;
+use App\Services\Wellnet\WellnetCreditService;
+use Illuminate\Http\JsonResponse;
+use RuntimeException;
+
+/**
+ * 返金コントローラ（API 6）
+ */
+class RefundController extends Controller
+{
+    private const REFUND_STATUS_REFUNDED = 'REFUNDED';
+    private const REFUND_STATUS_PENDING = 'REFUND_PENDING';
+
+    /**
+     * 返金処理
+     *
+     * POST /api/newwipe/refund
+     */
+    public function refund(
+        RefundRequest $request,
+        WellnetCreditService $creditService
+    ): JsonResponse {
+        $validated = $request->validated();
+
+        // トランザクション検索
+        $transaction = PaymentTransaction::where('syuno_recv_num', $validated['SyunoRecvNum'])->first();
+
+        if (!$transaction) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E17',
+                    'message' => '対象取引が未入金または存在しません。',
+                ]
+            ], 400);
+        }
+
+        // 入金済みチェック
+        if ($transaction->status !== '入金済み') {
+            return response()->json([
+                'error' => [
+                    'code' => 'E17',
+                    'message' => '未入金のため返金できません。',
+                ]
+            ], 400);
+        }
+
+        // クレジット決済のみ返金可能
+        if ($transaction->payment_type !== 'credit') {
+            return response()->json([
+                'error' => [
+                    'code' => 'INVALID_REQUEST',
+                    'message' => 'コンビニ決済の返金はこのAPIでは対応していません。',
+                ]
+            ], 400);
+        }
+
+        // 既に返金済みチェック
+        if ($transaction->refund_status === 'REFUNDED') {
+            return response()->json([
+                'error' => [
+                    'code' => 'D01',
+                    'message' => '既に返金処理済みです。',
+                ]
+            ], 400);
+        }
+
+        // 決済番号チェック（CAFIS決済番号が必要）
+        if (empty($transaction->payment_number)) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E20',
+                    'message' => 'クレジット決済番号（paymentNumber）が未取得のため返金できません。',
+                ]
+            ], 400);
+        }
+
+        // 返金額計算
+        $refundAmount = $validated['refundAmount'] ?? $transaction->amount;
+        $afterRefundPayAmount = $transaction->amount - $refundAmount;
+
+        if ($afterRefundPayAmount < 0) {
+            return response()->json([
+                'error' => [
+                    'code' => 'INVALID_REQUEST',
+                    'message' => '返金額が決済金額を超えています。',
+                ]
+            ], 400);
+        }
+
+        $creditResponse = null;
+        try {
+            // 全額かつ与信取消可能な場合
+            if ($afterRefundPayAmount === 0) {
+                $creditResponse = $creditService->cancelAuthorize($transaction->payment_number);
+            } else {
+                // 部分返金（差額返金）
+                $creditResponse = $creditService->refund($transaction->payment_number, $afterRefundPayAmount);
+            }
+        } catch (RuntimeException $e) {
+            $mapped = $this->mapCreditExceptionToApiError($e);
+            // 与信取消失敗時はrefundで再試行
+            if ($afterRefundPayAmount === 0 && str_contains($e->getMessage(), 'INVALID_OPERATION')) {
+                try {
+                    $creditResponse = $creditService->refund($transaction->payment_number, 0);
+                } catch (RuntimeException $retryException) {
+                    $retryMapped = $this->mapCreditExceptionToApiError($retryException);
+                    return response()->json([
+                        'error' => [
+                            'code' => $retryMapped['code'],
+                            'message' => $retryMapped['message'],
+                        ]
+                    ], $retryMapped['code'] === 'E99' ? 500 : 400);
+                }
+            } else {
+                return response()->json([
+                    'error' => [
+                        'code' => $mapped['code'],
+                        'message' => $mapped['message'],
+                    ]
+                ], $mapped['code'] === 'E99' ? 500 : 400);
+            }
+        }
+
+        // トランザクション更新
+        $refundId = 'REF-' . date('YmdHis') . '-' . substr(uniqid(), -6);
+        $refundStatus = $creditResponse['refundStatus'] ?? self::REFUND_STATUS_REFUNDED;
+        $transaction->update([
+            'refund_amount' => $refundAmount,
+            'refund_status' => $refundStatus,
+            'refund_id' => $refundId,
+        ]);
+
+        $response = [
+            'SyunoRecvNum' => $transaction->syuno_recv_num,
+            'refundStatus' => $refundStatus,
+            'refundAmount' => $refundAmount,
+            'originalAmount' => $transaction->amount,
+            'refundId' => $refundId,
+        ];
+        if ($transaction->payment_number) {
+            $response['transactionId'] = $transaction->payment_number;
+        }
+
+        return response()->json($response);
+    }
+
+    /**
+     * Wellnet/CAFISエラーをapi.pdfの返金APIエラーコードへ寄せる
+     */
+    private function mapCreditExceptionToApiError(RuntimeException $e): array
+    {
+        $message = $e->getMessage();
+
+        if (preg_match('/\\bE29\\b/u', $message) || str_contains($message, '有効期限が過ぎ')) {
+            return ['code' => 'E29', 'message' => '期限経過: ' . $message];
+        }
+        if (str_contains($message, 'PAYMENT_NUMBER_DOES_NOT_EXIST')) {
+            return ['code' => 'E20', 'message' => '取引不明: ' . $message];
+        }
+        if (str_contains($message, 'INVALID_OPERATION_REFUNDED')) {
+            return ['code' => 'D01', 'message' => '返金不可: ' . $message];
+        }
+        if (str_contains($message, 'INVALID_OPERATION_CANCELED')) {
+            return ['code' => 'D01', 'message' => '返金不可: ' . $message];
+        }
+        if (preg_match('/\\bD0[2-8]\\b/u', $message) || str_contains($message, 'D81')) {
+            // D02: 売上前 / D03: 差額なし（取消推奨） / D04: 返金後金額不正 / D05: 対象なし
+            // D06-08: 二重等 / D81: 差額返金済の為取消不可
+            return ['code' => 'E30', 'message' => '処理不可: ' . $message];
+        }
+        if (str_contains($message, 'HTTP 423')) {
+            return ['code' => 'E30', 'message' => '処理不可: ' . $message];
+        }
+        if (str_contains($message, 'USER_ACTION_IN_PROGRESS')) {
+            return ['code' => 'E30', 'message' => '処理不可: ' . $message];
+        }
+
+        return ['code' => 'E99', 'message' => '返金処理に失敗しました: ' . $message];
+    }
+}
diff --git a/app/Http/Controllers/Api/RemPaymentController.php b/app/Http/Controllers/Api/RemPaymentController.php
new file mode 100644
index 0000000..52ac129
--- /dev/null
+++ b/app/Http/Controllers/Api/RemPaymentController.php
@@ -0,0 +1,195 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Exceptions\WellnetSoapException;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Api\RemLinkRequest;
+use App\Models\PaymentTransaction;
+use App\Services\Wellnet\PaymentLinkBuilder;
+use App\Services\Wellnet\WellnetSoapService;
+use Illuminate\Http\JsonResponse;
+use RuntimeException;
+
+/**
+ * REM支払案内コントローラ（API 2）
+ */
+class RemPaymentController extends Controller
+{
+    /**
+     * REM支払案内リンク生成
+     *
+     * POST /api/newwipe/rem/link
+     */
+    public function createLink(
+        RemLinkRequest $request,
+        WellnetSoapService $soapService,
+        PaymentLinkBuilder $linkBuilder
+    ): JsonResponse {
+        $validated = $request->validated();
+
+        // 受付番号の重複チェック
+        $existing = PaymentTransaction::where('syuno_recv_num', $validated['SyunoRecvNum'])->first();
+        if ($existing) {
+            // 期限切れ（DB未更新）を補正
+            if ($existing->status === '入金待ち' && $existing->pay_limit && $existing->pay_limit->lessThan(now())) {
+                $existing->update(['status' => '支払期限切れ']);
+            }
+
+            if ($existing->status === '入金済み') {
+                return response()->json([
+                    'error' => ['code' => 'E17', 'message' => '入金処理完了済みの受付番号です。']
+                ], 400);
+            }
+            if ($existing->status === '支払期限切れ') {
+                return response()->json([
+                    'error' => ['code' => 'E23', 'message' => '支払期限切れの受付番号です。']
+                ], 400);
+            }
+            if ($existing->status === '取消済み') {
+                return response()->json([
+                    'error' => ['code' => 'E24', 'message' => '取消済みの受付番号です。']
+                ], 400);
+            }
+
+            // 冪等対応：入金待ちの既存データがある場合は同一リンクを返す
+            if (!empty($existing->kessai_no) && $existing->status === '入金待ち') {
+                $paymentGuideUrl = $linkBuilder->buildRemUrl($existing->kessai_no);
+                return response()->json([
+                    'result' => 'OK',
+                    'paymentGuideUrl' => $paymentGuideUrl,
+                    'SyunoRecvNum' => $existing->syuno_recv_num,
+                ]);
+            }
+
+            return response()->json([
+                'error' => ['code' => 'INVALID_REQUEST', 'message' => '既に登録済みの受付番号です。']
+            ], 400);
+        }
+
+        // SyunoFreeArray構築
+        $freeArray = $this->buildFreeArray($validated);
+
+        // SOAP送信データ構築
+        $inData = [
+            'SyunoRecvNum' => $validated['SyunoRecvNum'],
+            'SyunoTel' => $validated['SyunoTel'],
+            'SyunoNameKanji' => $validated['SyunoNameKanji'],
+            'SyunoPayLimit' => $validated['SyunoPayLimit'],
+            'SyunoPayAmount' => (string) $validated['SyunoPayAmount'],
+            'SyunoFreeArray' => $freeArray,
+        ];
+
+        if (!empty($validated['SyunoNameKana'])) {
+            $inData['SyunoNameKana'] = $validated['SyunoNameKana'];
+        }
+        if (!empty($validated['SyunoReserveNum'])) {
+            $inData['SyunoReserveNum'] = $validated['SyunoReserveNum'];
+        }
+        if (!empty($validated['SyunoMemberNum'])) {
+            $inData['SyunoMemberNum'] = $validated['SyunoMemberNum'];
+        }
+
+        try {
+            // Wellnet受付登録
+            $result = $soapService->register($inData);
+        } catch (WellnetSoapException $e) {
+            $code = $e->getWellnetCode();
+            $errorCode = $this->normalizeWellnetErrorCode($code);
+            return response()->json([
+                'error' => [
+                    'code' => $errorCode,
+                    'message' => 'Wellnet受付登録に失敗しました: ' . $e->getMessage(),
+                ]
+            ], 400);
+        } catch (RuntimeException $e) {
+            return response()->json([
+                'error' => [
+                    'code' => 'E99',
+                    'message' => 'Wellnet通信エラー: ' . $e->getMessage(),
+                ]
+            ], 500);
+        }
+
+        $kessaiNo = $result['KKessaiNo'];
+
+        // 支払案内リンク生成
+        $paymentGuideUrl = $linkBuilder->buildRemUrl($kessaiNo);
+
+        // トランザクション保存
+        PaymentTransaction::create([
+            'syuno_recv_num' => $validated['SyunoRecvNum'],
+            'payment_type' => 'rem',
+            'status' => '入金待ち',
+            'amount' => $validated['SyunoPayAmount'],
+            'pay_limit' => $this->parsePayLimit($validated['SyunoPayLimit']),
+            'kessai_no' => $kessaiNo,
+            'name_kanji' => $validated['SyunoNameKanji'],
+            'name_kana' => $validated['SyunoNameKana'] ?? null,
+            'tel' => $validated['SyunoTel'],
+            'subscription_flg' => 0,
+            'free_area' => $this->buildFreeAreaJson($validated),
+            'wellnet_response' => json_encode($result, JSON_UNESCAPED_UNICODE),
+        ]);
+
+        return response()->json([
+            'result' => 'OK',
+            'paymentGuideUrl' => $paymentGuideUrl,
+            'SyunoRecvNum' => $validated['SyunoRecvNum'],
+        ]);
+    }
+
+    /**
+     * SyunoFreeArray構築（Index付き配列）
+     */
+    private function buildFreeArray(array $validated): array
+    {
+        $freeArray = [];
+        for ($i = 1; $i <= 23; $i++) {
+            $key = 'SyunoFree' . $i;
+            if (isset($validated[$key]) && $validated[$key] !== '') {
+                $freeArray[$i] = $validated[$key];
+            }
+        }
+        return $freeArray;
+    }
+
+    /**
+     * Free AreaをJSON保存用に構築
+     */
+    private function buildFreeAreaJson(array $validated): ?array
+    {
+        $freeArea = [];
+        for ($i = 1; $i <= 23; $i++) {
+            $key = 'SyunoFree' . $i;
+            if (isset($validated[$key]) && $validated[$key] !== '') {
+                $freeArea[$key] = $validated[$key];
+            }
+        }
+        return !empty($freeArea) ? $freeArea : null;
+    }
+
+    /**
+     * 支払期限文字列（YYYYMMDDhhmm）をdatetime形式に変換
+     */
+    private function parsePayLimit(string $payLimit): string
+    {
+        return substr($payLimit, 0, 4) . '-'
+            . substr($payLimit, 4, 2) . '-'
+            . substr($payLimit, 6, 2) . ' '
+            . substr($payLimit, 8, 2) . ':'
+            . substr($payLimit, 10, 2) . ':00';
+    }
+
+    /**
+     * WellnetエラーコードをAPIエラーコード形式へ正規化
+     */
+    private function normalizeWellnetErrorCode(string $code): string
+    {
+        if (!ctype_digit($code)) {
+            return $code;
+        }
+        $trimmed = ltrim($code, '0');
+        return 'R' . ($trimmed === '' ? '0' : $trimmed);
+    }
+}
diff --git a/app/Http/Middleware/WellnetIpWhitelist.php b/app/Http/Middleware/WellnetIpWhitelist.php
new file mode 100644
index 0000000..693b292
--- /dev/null
+++ b/app/Http/Middleware/WellnetIpWhitelist.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Wellnet Callback用IP制限ミドルウェア
+ */
+class WellnetIpWhitelist
+{
+    /**
+     * IPアドレス制限処理
+     *
+     * @param Request $request
+     * @param Closure $next
+     * @return Response
+     */
+    public function handle(Request $request, Closure $next): Response
+    {
+        $allowedIps = config('wellnet.callback.allowed_ips', []);
+
+        // 白名単が空の場合は開発のみスキップ、商用は拒否
+        if (empty($allowedIps)) {
+            if (app()->environment('production')) {
+                return response('800', 200)
+                    ->header('Content-Type', 'text/plain');
+            }
+            return $next($request);
+        }
+
+        $clientIp = $request->ip();
+
+        if (!in_array($clientIp, $allowedIps, true)) {
+            // Wellnet Callback仕様: 異常時もHTTP 200 + 固定コードで応答
+            return response('800', 200)
+                ->header('Content-Type', 'text/plain');
+        }
+
+        return $next($request);
+    }
+}
diff --git a/app/Http/Requests/Api/CreditLinkRequest.php b/app/Http/Requests/Api/CreditLinkRequest.php
new file mode 100644
index 0000000..3a9ce59
--- /dev/null
+++ b/app/Http/Requests/Api/CreditLinkRequest.php
@@ -0,0 +1,106 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Carbon\Carbon;
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Exceptions\HttpResponseException;
+
+/**
+ * クレジット支払リンク生成リクエストバリデーション
+ */
+class CreditLinkRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * バリデーションルール
+     */
+    public function rules(): array
+    {
+        return [
+            'SyunoRecvNum' => ['required', 'string', 'max:20', 'regex:/^[a-zA-Z0-9]+$/'],
+            'SyunoTel' => ['required', 'string', 'max:13', 'regex:/^[0-9\-]+$/'],
+            'SyunoNameKanji' => ['required', 'string', 'max:40'],
+            'SyunoNameKana' => ['nullable', 'string', 'max:40'],
+            'SyunoPayLimit' => ['required', 'string', 'regex:/^\d{12}$/'],
+            'SyunoPayAmount' => ['required', 'integer', 'min:1'],
+            'SyunoFree1' => ['required', 'string', 'max:32'],
+            'SyunoFree9' => ['required', 'string', 'max:60'],
+            'SyunoFree19' => ['required', 'string', 'max:42'],
+            'subscription_flg' => ['required', 'integer', 'in:0,1'],
+            'SyunoReserveNum' => ['nullable', 'string', 'max:20'],
+            'SyunoFree2' => ['nullable', 'string', 'max:32'],
+            'SyunoFree3' => ['nullable', 'string', 'max:32'],
+            'SyunoFree4' => ['nullable', 'string', 'max:32'],
+            'SyunoFree5' => ['nullable', 'string', 'max:32'],
+            'SyunoFree6' => ['nullable', 'string', 'max:32'],
+            'SyunoFree7' => ['nullable', 'string', 'max:32'],
+            'SyunoFree8' => ['nullable', 'string', 'max:32'],
+            'SyunoFree10' => ['nullable', 'string', 'max:60'],
+            'SyunoFree11' => ['nullable', 'string', 'max:60'],
+            'SyunoFree12' => ['nullable', 'string', 'max:60'],
+            'SyunoFree13' => ['nullable', 'string', 'max:60'],
+            'SyunoFree14' => ['nullable', 'string', 'max:60'],
+            'SyunoFree15' => ['nullable', 'string', 'max:60'],
+            'SyunoFree16' => ['nullable', 'string', 'max:60'],
+            'SyunoFree17' => ['nullable', 'string', 'max:60'],
+            'SyunoFree18' => ['nullable', 'string', 'max:60'],
+            'SyunoFree20' => ['nullable', 'string', 'max:12'],
+            'SyunoFree21' => ['nullable', 'string', 'max:11'],
+            'SyunoFree22' => ['nullable', 'string', 'max:128'],
+            'SyunoFree23' => ['nullable', 'string', 'max:40'],
+        ];
+    }
+
+    /**
+     * バリデーション失敗時のJSONエラーレスポンス
+     */
+    protected function failedValidation(Validator $validator): void
+    {
+        throw new HttpResponseException(response()->json([
+            'error' => [
+                'code' => 'INVALID_REQUEST',
+                'message' => $validator->errors()->first(),
+            ]
+        ], 400));
+    }
+
+    /**
+     * 追加バリデーション（支払期限の範囲チェック）
+     */
+    public function withValidator($validator): void
+    {
+        $validator->after(function ($validator) {
+            $payLimit = $this->input('SyunoPayLimit');
+            if (!$payLimit) {
+                return;
+            }
+
+            try {
+                $dt = Carbon::createFromFormat('YmdHi', $payLimit, 'Asia/Tokyo');
+                $errors = Carbon::getLastErrors() ?: ['warning_count' => 0, 'error_count' => 0];
+                if (($errors['warning_count'] ?? 0) > 0 || ($errors['error_count'] ?? 0) > 0) {
+                    $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitの日時が不正です。');
+                    return;
+                }
+            } catch (\Throwable) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitの日時が不正です。');
+                return;
+            }
+
+            $now = Carbon::now('Asia/Tokyo');
+            $max = $now->copy()->addDays(365);
+
+            if ($dt->lessThanOrEqualTo($now)) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitは現在時刻より未来を指定してください。');
+            } elseif ($dt->greaterThan($max)) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitは365日以内で指定してください。');
+            }
+        });
+    }
+}
diff --git a/app/Http/Requests/Api/PaymentUpdateRequest.php b/app/Http/Requests/Api/PaymentUpdateRequest.php
new file mode 100644
index 0000000..9395c2e
--- /dev/null
+++ b/app/Http/Requests/Api/PaymentUpdateRequest.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Carbon\Carbon;
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Exceptions\HttpResponseException;
+
+/**
+ * 決済情報更新リクエストバリデーション
+ */
+class PaymentUpdateRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * バリデーションルール
+     */
+    public function rules(): array
+    {
+        return [
+            'SyunoRecvNum' => ['required', 'string', 'max:20', 'regex:/^[a-zA-Z0-9]+$/'],
+            'cancelFlag' => ['nullable'],
+            'SyunoPayLimit' => ['nullable', 'string', 'regex:/^\d{12}$/'],
+            'SyunoPayAmount' => ['nullable', 'integer', 'min:1'],
+            'SyunoNameKanji' => ['nullable', 'string', 'max:40'],
+            'SyunoNameKana' => ['nullable', 'string', 'max:40'],
+            'SyunoTel' => ['nullable', 'string', 'max:13', 'regex:/^[0-9\\-]+$/'],
+            'SyunoFree1' => ['nullable', 'string', 'max:32'],
+            'SyunoFree2' => ['nullable', 'string', 'max:32'],
+            'SyunoFree3' => ['nullable', 'string', 'max:32'],
+            'SyunoFree4' => ['nullable', 'string', 'max:32'],
+            'SyunoFree5' => ['nullable', 'string', 'max:32'],
+            'SyunoFree6' => ['nullable', 'string', 'max:32'],
+            'SyunoFree7' => ['nullable', 'string', 'max:32'],
+            'SyunoFree8' => ['nullable', 'string', 'max:32'],
+            'SyunoFree9' => ['nullable', 'string', 'max:60'],
+            'SyunoFree10' => ['nullable', 'string', 'max:60'],
+            'SyunoFree11' => ['nullable', 'string', 'max:60'],
+            'SyunoFree12' => ['nullable', 'string', 'max:60'],
+            'SyunoFree13' => ['nullable', 'string', 'max:60'],
+            'SyunoFree14' => ['nullable', 'string', 'max:60'],
+            'SyunoFree15' => ['nullable', 'string', 'max:60'],
+            'SyunoFree16' => ['nullable', 'string', 'max:60'],
+            'SyunoFree17' => ['nullable', 'string', 'max:60'],
+            'SyunoFree18' => ['nullable', 'string', 'max:60'],
+            'SyunoFree19' => ['nullable', 'string', 'max:42'],
+            'SyunoFree20' => ['nullable', 'string', 'max:12'],
+            'SyunoFree21' => ['nullable', 'string', 'max:11'],
+        ];
+    }
+
+    /**
+     * バリデーション失敗時のJSONエラーレスポンス
+     */
+    protected function failedValidation(Validator $validator): void
+    {
+        throw new HttpResponseException(response()->json([
+            'error' => [
+                'code' => 'INVALID_REQUEST',
+                'message' => $validator->errors()->first(),
+            ]
+        ], 400));
+    }
+
+    /**
+     * 追加バリデーション（支払期限の範囲チェック）
+     */
+    public function withValidator($validator): void
+    {
+        $validator->after(function ($validator) {
+            $payLimit = $this->input('SyunoPayLimit');
+            if ($payLimit === null) {
+                return;
+            }
+
+            try {
+                $dt = Carbon::createFromFormat('YmdHi', $payLimit, 'Asia/Tokyo');
+                $errors = Carbon::getLastErrors() ?: ['warning_count' => 0, 'error_count' => 0];
+                if (($errors['warning_count'] ?? 0) > 0 || ($errors['error_count'] ?? 0) > 0) {
+                    $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitの日時が不正です。');
+                    return;
+                }
+            } catch (\Throwable) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitの日時が不正です。');
+                return;
+            }
+
+            $now = Carbon::now('Asia/Tokyo');
+            $max = $now->copy()->addDays(365);
+
+            if ($dt->lessThanOrEqualTo($now)) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitは現在時刻より未来を指定してください。');
+            } elseif ($dt->greaterThan($max)) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitは365日以内で指定してください。');
+            }
+        });
+    }
+}
diff --git a/app/Http/Requests/Api/RefundRequest.php b/app/Http/Requests/Api/RefundRequest.php
new file mode 100644
index 0000000..66e56a4
--- /dev/null
+++ b/app/Http/Requests/Api/RefundRequest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Exceptions\HttpResponseException;
+
+/**
+ * 返金リクエストバリデーション
+ */
+class RefundRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * バリデーションルール
+     */
+    public function rules(): array
+    {
+        return [
+            'SyunoRecvNum' => ['required', 'string', 'max:20', 'regex:/^[a-zA-Z0-9]+$/'],
+            'refundAmount' => ['nullable', 'integer', 'min:1'],
+        ];
+    }
+
+    /**
+     * バリデーション失敗時のJSONエラーレスポンス
+     */
+    protected function failedValidation(Validator $validator): void
+    {
+        throw new HttpResponseException(response()->json([
+            'error' => [
+                'code' => 'INVALID_REQUEST',
+                'message' => $validator->errors()->first(),
+            ]
+        ], 400));
+    }
+}
diff --git a/app/Http/Requests/Api/RemLinkRequest.php b/app/Http/Requests/Api/RemLinkRequest.php
new file mode 100644
index 0000000..49d143f
--- /dev/null
+++ b/app/Http/Requests/Api/RemLinkRequest.php
@@ -0,0 +1,106 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Carbon\Carbon;
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Exceptions\HttpResponseException;
+
+/**
+ * REM支払案内リンク生成リクエストバリデーション
+ */
+class RemLinkRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * バリデーションルール
+     */
+    public function rules(): array
+    {
+        return [
+            'SyunoRecvNum' => ['required', 'string', 'max:20', 'regex:/^[a-zA-Z0-9]+$/'],
+            'SyunoTel' => ['required', 'string', 'max:13', 'regex:/^[0-9\-]+$/'],
+            'SyunoNameKanji' => ['required', 'string', 'max:40'],
+            'SyunoNameKana' => ['nullable', 'string', 'max:40'],
+            'SyunoPayLimit' => ['required', 'string', 'regex:/^\d{12}$/'],
+            'SyunoPayAmount' => ['required', 'integer', 'min:1'],
+            'SyunoFree1' => ['required', 'string', 'max:32'],
+            'SyunoFree9' => ['required', 'string', 'max:60'],
+            'SyunoFree19' => ['required', 'string', 'max:42'],
+            'SyunoMemberNum' => ['nullable', 'string', 'max:20'],
+            'SyunoReserveNum' => ['nullable', 'string', 'max:20'],
+            'SyunoFree2' => ['nullable', 'string', 'max:32'],
+            'SyunoFree3' => ['nullable', 'string', 'max:32'],
+            'SyunoFree4' => ['nullable', 'string', 'max:32'],
+            'SyunoFree5' => ['nullable', 'string', 'max:32'],
+            'SyunoFree6' => ['nullable', 'string', 'max:32'],
+            'SyunoFree7' => ['nullable', 'string', 'max:32'],
+            'SyunoFree8' => ['nullable', 'string', 'max:32'],
+            'SyunoFree10' => ['nullable', 'string', 'max:60'],
+            'SyunoFree11' => ['nullable', 'string', 'max:60'],
+            'SyunoFree12' => ['nullable', 'string', 'max:60'],
+            'SyunoFree13' => ['nullable', 'string', 'max:60'],
+            'SyunoFree14' => ['nullable', 'string', 'max:60'],
+            'SyunoFree15' => ['nullable', 'string', 'max:60'],
+            'SyunoFree16' => ['nullable', 'string', 'max:60'],
+            'SyunoFree17' => ['nullable', 'string', 'max:60'],
+            'SyunoFree18' => ['nullable', 'string', 'max:60'],
+            'SyunoFree20' => ['nullable', 'string', 'max:12'],
+            'SyunoFree21' => ['nullable', 'string', 'max:11'],
+            'SyunoFree22' => ['nullable', 'string', 'max:128'],
+            'SyunoFree23' => ['nullable', 'string', 'max:40'],
+        ];
+    }
+
+    /**
+     * バリデーション失敗時のJSONエラーレスポンス
+     */
+    protected function failedValidation(Validator $validator): void
+    {
+        throw new HttpResponseException(response()->json([
+            'error' => [
+                'code' => 'INVALID_REQUEST',
+                'message' => $validator->errors()->first(),
+            ]
+        ], 400));
+    }
+
+    /**
+     * 追加バリデーション（支払期限の範囲チェック）
+     */
+    public function withValidator($validator): void
+    {
+        $validator->after(function ($validator) {
+            $payLimit = $this->input('SyunoPayLimit');
+            if (!$payLimit) {
+                return;
+            }
+
+            try {
+                $dt = Carbon::createFromFormat('YmdHi', $payLimit, 'Asia/Tokyo');
+                $errors = Carbon::getLastErrors() ?: ['warning_count' => 0, 'error_count' => 0];
+                if (($errors['warning_count'] ?? 0) > 0 || ($errors['error_count'] ?? 0) > 0) {
+                    $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitの日時が不正です。');
+                    return;
+                }
+            } catch (\Throwable) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitの日時が不正です。');
+                return;
+            }
+
+            $now = Carbon::now('Asia/Tokyo');
+            $max = $now->copy()->addDays(365);
+
+            if ($dt->lessThanOrEqualTo($now)) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitは現在時刻より未来を指定してください。');
+            } elseif ($dt->greaterThan($max)) {
+                $validator->errors()->add('SyunoPayLimit', 'SyunoPayLimitは365日以内で指定してください。');
+            }
+        });
+    }
+}
diff --git a/app/Http/Requests/Api/SubscriptionChargeRequest.php b/app/Http/Requests/Api/SubscriptionChargeRequest.php
new file mode 100644
index 0000000..74473a3
--- /dev/null
+++ b/app/Http/Requests/Api/SubscriptionChargeRequest.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Carbon\Carbon;
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Exceptions\HttpResponseException;
+
+/**
+ * 継続課金請求リクエストバリデーション
+ */
+class SubscriptionChargeRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * バリデーションルール
+     */
+    public function rules(): array
+    {
+        return [
+            'member_id' => ['required', 'string', 'max:20'],
+            'amount' => ['required', 'integer', 'min:1'],
+            'execute_date' => ['required', 'string', 'regex:/^\d{8}$/'],
+            'contract_id' => ['required', 'string', 'max:20'],
+            'card_seq' => ['nullable', 'integer'],
+        ];
+    }
+
+    /**
+     * バリデーション失敗時のJSONエラーレスポンス
+     */
+    protected function failedValidation(Validator $validator): void
+    {
+        throw new HttpResponseException(response()->json([
+            'error' => [
+                'code' => 'INVALID_REQUEST',
+                'message' => $validator->errors()->first(),
+            ]
+        ], 400));
+    }
+
+    /**
+     * 追加バリデーション（execute_dateの実在日チェック）
+     */
+    public function withValidator($validator): void
+    {
+        $validator->after(function ($validator) {
+            $executeDate = $this->input('execute_date');
+            if (!$executeDate) {
+                return;
+            }
+
+            try {
+                Carbon::createFromFormat('Ymd', $executeDate, 'Asia/Tokyo');
+                $errors = Carbon::getLastErrors() ?: ['warning_count' => 0, 'error_count' => 0];
+                if (($errors['warning_count'] ?? 0) > 0 || ($errors['error_count'] ?? 0) > 0) {
+                    $validator->errors()->add('execute_date', 'execute_dateの日付が不正です。');
+                }
+            } catch (\Throwable) {
+                $validator->errors()->add('execute_date', 'execute_dateの日付が不正です。');
+            }
+        });
+    }
+}
diff --git a/app/Models/CreditPaymentLog.php b/app/Models/CreditPaymentLog.php
new file mode 100644
index 0000000..f78e807
--- /dev/null
+++ b/app/Models/CreditPaymentLog.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * 継続課金請求履歴モデル
+ */
+class CreditPaymentLog extends Model
+{
+    protected $table = 'credit_payment_log';
+    protected $primaryKey = 'credit_payment_log_id';
+    public $timestamps = true;
+
+    protected $fillable = [
+        'credit_subscription_id',
+        'contract_id',
+        'user_id',
+        'request_amount',
+        'execute_date',
+        'request_at',
+        'response_result',
+        'response_code',
+        'response_message',
+        'payment_number',
+        'status',
+    ];
+
+    protected $casts = [
+        'execute_date' => 'date',
+        'request_at' => 'datetime',
+        'request_amount' => 'decimal:0',
+    ];
+
+    /**
+     * 継続課金登録リレーション
+     */
+    public function creditSubscription(): BelongsTo
+    {
+        return $this->belongsTo(CreditSubscription::class, 'credit_subscription_id', 'credit_subscription_id');
+    }
+
+    /**
+     * 利用者リレーション
+     */
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'user_id', 'user_id');
+    }
+}
diff --git a/app/Models/CreditSubscription.php b/app/Models/CreditSubscription.php
new file mode 100644
index 0000000..da13673
--- /dev/null
+++ b/app/Models/CreditSubscription.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * 継続課金会員登録モデル
+ */
+class CreditSubscription extends Model
+{
+    protected $table = 'credit_subscription';
+    protected $primaryKey = 'credit_subscription_id';
+    public $timestamps = true;
+
+    protected $fillable = [
+        'user_id',
+        'credit_member_id',
+        'credit_card_seq',
+        'subscription_status',
+        'registered_at',
+        'operator_id',
+    ];
+
+    protected $casts = [
+        'registered_at' => 'datetime',
+        'subscription_status' => 'integer',
+    ];
+
+    /**
+     * 利用者リレーション
+     */
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'user_id', 'user_id');
+    }
+}
diff --git a/app/Models/PaymentTransaction.php b/app/Models/PaymentTransaction.php
new file mode 100644
index 0000000..ea10782
--- /dev/null
+++ b/app/Models/PaymentTransaction.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * 決済トランザクションモデル
+ */
+class PaymentTransaction extends Model
+{
+    protected $table = 'payment_transaction';
+    protected $primaryKey = 'payment_transaction_id';
+    public $timestamps = true;
+
+    protected $fillable = [
+        'syuno_recv_num',
+        'payment_type',
+        'status',
+        'amount',
+        'pay_limit',
+        'kessai_no',
+        'payment_number',
+        'name_kanji',
+        'name_kana',
+        'tel',
+        'subscription_flg',
+        'paid_datetime',
+        'store_code',
+        'cvs_code',
+        'refund_amount',
+        'refund_status',
+        'refund_id',
+        'free_area',
+        'wellnet_response',
+    ];
+
+    protected $casts = [
+        'free_area' => 'array',
+        'paid_datetime' => 'datetime',
+        'pay_limit' => 'datetime',
+        'amount' => 'integer',
+        'subscription_flg' => 'integer',
+        'refund_amount' => 'integer',
+    ];
+}
diff --git a/app/Services/Wellnet/PaymentLinkBuilder.php b/app/Services/Wellnet/PaymentLinkBuilder.php
new file mode 100644
index 0000000..ffc6769
--- /dev/null
+++ b/app/Services/Wellnet/PaymentLinkBuilder.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Services\Wellnet;
+
+/**
+ * Wellnet決済リンク生成サービス
+ */
+class PaymentLinkBuilder
+{
+    /**
+     * クレジット決済画面URL生成（WPS/JLPcaf）
+     *
+     * @param string $kessaiNo 暗号化オンライン決済番号（KKessaiNo）
+     * @return string クレジット決済画面URL
+     */
+    public function buildCreditUrl(string $kessaiNo): string
+    {
+        $baseUrl = config('wellnet.wps.base_url');
+        return $baseUrl . '/CafJLP/JLPcaf?GUID=' . urlencode($kessaiNo);
+    }
+
+    /**
+     * REM支払案内画面URL生成（JLPcon）
+     *
+     * @param string $kessaiNo 暗号化オンライン決済番号（KKessaiNo）
+     * @return string 支払案内画面URL
+     */
+    public function buildRemUrl(string $kessaiNo): string
+    {
+        $baseUrl = config('wellnet.jlp.base_url');
+        // api.pdf のサンプルURLに合わせて /JLPCT/JLPcon を利用
+        return $baseUrl . '/JLPCT/JLPcon?GUID=' . urlencode($kessaiNo);
+    }
+}
diff --git a/app/Services/Wellnet/WellnetCreditService.php b/app/Services/Wellnet/WellnetCreditService.php
new file mode 100644
index 0000000..c33871c
--- /dev/null
+++ b/app/Services/Wellnet/WellnetCreditService.php
@@ -0,0 +1,172 @@
+<?php
+
+namespace App\Services\Wellnet;
+
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Str;
+use RuntimeException;
+
+/**
+ * Wellnet クレジットAPIサービス（CAFIS外部インターフェース）
+ */
+class WellnetCreditService
+{
+    private string $baseUrl;
+    private string $companyCode;
+    private string $authKey;
+    private int $timeout;
+
+    public function __construct()
+    {
+        $this->baseUrl = config('wellnet.credit_api.base_url');
+        $this->companyCode = config('wellnet.credit_api.company_code');
+        $this->authKey = config('wellnet.credit_api.auth_key');
+        $this->timeout = config('wellnet.credit_api.timeout', 120);
+    }
+
+    /**
+     * 与信照会要求（Authorize）
+     *
+     * @param string $memberNo 会員番号
+     * @param int $payAmount 決済金額
+     * @param int|null $cardNoSeq カード連番（未指定時はデフォルト使用）
+     * @return array レスポンスデータ
+     * @throws RuntimeException APIエラー時
+     */
+    public function authorize(string $memberNo, int $payAmount, ?int $cardNoSeq = null): array
+    {
+        $payload = [
+            'requestId' => $this->generateRequestId(),
+            'companyCode' => $this->companyCode,
+            'authKey' => $this->authKey,
+            'memberNo' => $memberNo,
+            'payAmount' => $payAmount,
+        ];
+
+        if ($cardNoSeq !== null) {
+            $payload['cardNoSeq'] = $cardNoSeq;
+        }
+
+        return $this->post('/api/authori', $payload);
+    }
+
+    /**
+     * 売上確定要求（Capture）
+     *
+     * @param string $paymentNumber 決済番号
+     * @return array レスポンスデータ
+     * @throws RuntimeException APIエラー時
+     */
+    public function capture(string $paymentNumber): array
+    {
+        $payload = [
+            'requestId' => $this->generateRequestId(),
+            'companyCode' => $this->companyCode,
+            'authKey' => $this->authKey,
+            'paymentNumber' => $paymentNumber,
+        ];
+
+        return $this->post('/api/definiteTanking', $payload);
+    }
+
+    /**
+     * 与信取消要求（全額取消）
+     *
+     * @param string $paymentNumber 決済番号
+     * @return array レスポンスデータ
+     * @throws RuntimeException APIエラー時
+     */
+    public function cancelAuthorize(string $paymentNumber): array
+    {
+        $payload = [
+            'requestId' => $this->generateRequestId(),
+            'companyCode' => $this->companyCode,
+            'authKey' => $this->authKey,
+            'paymentNumber' => $paymentNumber,
+        ];
+
+        try {
+            return $this->post('/api/cancelAuthori', $payload);
+        } catch (RuntimeException $e) {
+            if ((int) $e->getCode() === 404) {
+                return $this->post('/api/cancelPayment', $payload);
+            }
+            throw $e;
+        }
+    }
+
+    /**
+     * 差額返金要求（部分返金/全額返金）
+     *
+     * @param string $paymentNumber 決済番号
+     * @param int $afterRefundPayAmount 返金後の残額（全額返金時は0）
+     * @return array レスポンスデータ
+     * @throws RuntimeException APIエラー時
+     */
+    public function refund(string $paymentNumber, int $afterRefundPayAmount): array
+    {
+        $payload = [
+            'requestId' => $this->generateRequestId(),
+            'companyCode' => $this->companyCode,
+            'authKey' => $this->authKey,
+            'paymentNumber' => $paymentNumber,
+            'afterRefundPayAmount' => $afterRefundPayAmount,
+        ];
+
+        try {
+            return $this->post('/api/refund', $payload);
+        } catch (RuntimeException $e) {
+            if ((int) $e->getCode() === 404) {
+                return $this->post('/api/refundPayment', $payload);
+            }
+            throw $e;
+        }
+    }
+
+    /**
+     * HTTP POST送信
+     *
+     * @param string $path APIパス
+     * @param array $payload リクエストボディ
+     * @return array レスポンスデータ
+     * @throws RuntimeException 通信エラー・APIエラー時
+     */
+    private function post(string $path, array $payload): array
+    {
+        $url = rtrim($this->baseUrl, '/') . $path;
+
+        $response = Http::timeout($this->timeout)
+            ->acceptJson()
+            ->post($url, $payload);
+
+        if (!$response->successful()) {
+            $body = $response->json() ?? [];
+            $errorDesc = $body['errorDescription'] ?? $body['result'] ?? 'HTTP ' . $response->status();
+            throw new RuntimeException(
+                'クレジットAPIエラー: ' . $errorDesc,
+                $response->status()
+            );
+        }
+
+        $data = $response->json();
+
+        if (isset($data['result']) && $data['result'] !== 'SUCCESS') {
+            throw new RuntimeException(
+                'クレジットAPIエラー: ' . ($data['errorDescription'] ?? $data['result']),
+                400
+            );
+        }
+
+        return $data;
+    }
+
+    /**
+     * リクエストID自動採番
+     *
+     * @return string 一意のリクエストID
+     */
+    private function generateRequestId(): string
+    {
+        return 'REQ-' . date('YmdHis') . '-' . Str::random(6);
+    }
+}
diff --git a/app/Services/Wellnet/WellnetSoapService.php b/app/Services/Wellnet/WellnetSoapService.php
new file mode 100644
index 0000000..8cd80ed
--- /dev/null
+++ b/app/Services/Wellnet/WellnetSoapService.php
@@ -0,0 +1,218 @@
+<?php
+
+namespace App\Services\Wellnet;
+
+use App\Exceptions\WellnetSoapException;
+use SoapClient;
+use SoapHeader;
+use RuntimeException;
+
+/**
+ * Wellnet SOAP通信サービス（YoyakuSyunoBarCode）
+ */
+class WellnetSoapService
+{
+    private string $wsdlPath;
+    private string $endpoint;
+    private string $namespace;
+    private string $encoding;
+    private string $userId;
+    private string $password;
+
+    public function __construct()
+    {
+        $this->wsdlPath = config('wellnet.soap.wsdl_path');
+        $this->endpoint = config('wellnet.soap.endpoint');
+        $this->namespace = config('wellnet.soap.namespace');
+        $this->encoding = config('wellnet.soap.encoding');
+        $this->userId = config('wellnet.soap.user_id');
+        $this->password = config('wellnet.soap.password');
+    }
+
+    /**
+     * 受付データ登録（SyunoOpCode='I'）
+     *
+     * @param array $inData 送信データ
+     * @return array レスポンスデータ
+     * @throws RuntimeException Wellnetエラー時
+     */
+    public function register(array $inData): array
+    {
+        $inData['SyunoOpCode'] = 'I';
+        return $this->execute($inData);
+    }
+
+    /**
+     * 受付データ更新（SyunoOpCode='U'）
+     *
+     * @param array $inData 送信データ
+     * @return array レスポンスデータ
+     * @throws RuntimeException Wellnetエラー時
+     */
+    public function update(array $inData): array
+    {
+        $inData['SyunoOpCode'] = 'U';
+        return $this->execute($inData);
+    }
+
+    /**
+     * 受付データ取消（SyunoOpCode='D'）
+     *
+     * @param string $syunoRecvNum 受付番号
+     * @return array レスポンスデータ
+     * @throws RuntimeException Wellnetエラー時
+     */
+    public function cancel(string $syunoRecvNum): array
+    {
+        $inData = [
+            'SyunoRecvNum' => $syunoRecvNum,
+            'SyunoOpCode' => 'D',
+        ];
+        return $this->execute($inData);
+    }
+
+    /**
+     * SOAP通信実行
+     *
+     * @param array $inData 送信データ
+     * @return array レスポンスデータ
+     * @throws RuntimeException 通信エラー・Wellnetエラー時
+     */
+    private function execute(array $inData): array
+    {
+        if (!file_exists($this->wsdlPath)) {
+            throw new RuntimeException('WSDLファイルが見つかりません: ' . $this->wsdlPath);
+        }
+
+        // 固定値の設定
+        $inData['DataSyubetsu'] = config('wellnet.payment.data_syubetsu');
+
+        if (empty($inData['SyunoPayCode'])) {
+            $inData['SyunoPayCode'] = config('wellnet.payment.pay_code');
+        }
+        if (empty($inData['SyunoCorpCode'])) {
+            $inData['SyunoCorpCode'] = config('wellnet.payment.corp_code');
+        }
+        if (empty($inData['BcJigyosyaNo'])) {
+            $inData['BcJigyosyaNo'] = config('wellnet.payment.jigyosya_no');
+        }
+        if (empty($inData['BcAnkenNo'])) {
+            $inData['BcAnkenNo'] = config('wellnet.payment.anken_no');
+        }
+        if (empty($inData['BcNinsyoKey'])) {
+            $inData['BcNinsyoKey'] = config('wellnet.payment.ninsyo_key');
+        }
+        if (empty($inData['SyunoServiceKey'])) {
+            $inData['SyunoServiceKey'] = config('wellnet.payment.service_key');
+        }
+
+        // 日本語文字列をShift_JISに変換
+        $inData = $this->convertToSjis($inData);
+
+        // SyunoFreeArray の構築
+        if (isset($inData['SyunoFreeArray']) && is_array($inData['SyunoFreeArray'])) {
+            $freeArray = [];
+            foreach ($inData['SyunoFreeArray'] as $index => $value) {
+                $freeArray[] = ['Index' => $index, 'SyunoFreeStr' => $value];
+            }
+            $inData['SyunoFreeArray'] = $freeArray;
+        }
+
+        try {
+            $client = new SoapClient($this->wsdlPath, [
+                'encoding' => $this->encoding,
+                'trace' => true,
+                'exceptions' => true,
+                'cache_wsdl' => WSDL_CACHE_NONE,
+                'connection_timeout' => 30,
+                'location' => $this->endpoint,
+                'stream_context' => stream_context_create([
+                    'ssl' => [
+                        'verify_peer' => true,
+                        'verify_peer_name' => true,
+                    ]
+                ]),
+            ]);
+
+            // SOAP認証ヘッダ設定
+            $header = new SoapHeader($this->namespace, 'WellnetSoapHeader', [
+                'UserId' => $this->userId,
+                'Password' => $this->password,
+            ], true);
+            $client->__setSoapHeaders($header);
+
+            // SOAP呼出
+            $params = ['inData' => $inData];
+            $response = $client->YoyakuSyunoBarCode($params);
+
+            // レスポンス解析
+            $result = $this->parseResponse($response);
+
+            // 結果チェック
+            if ($result['Result'] !== '0000') {
+                throw new WellnetSoapException(
+                    $result['Result'],
+                    'Wellnet SOAPエラー: Result=' . $result['Result']
+                );
+            }
+
+            return $result;
+
+        } catch (\SoapFault $e) {
+            throw new RuntimeException('SOAP通信エラー: ' . $e->getMessage(), 0, $e);
+        }
+    }
+
+    /**
+     * SOAPレスポンス解析
+     *
+     * @param object $response SOAPレスポンスオブジェクト
+     * @return array 解析済みデータ
+     */
+    private function parseResponse(object $response): array
+    {
+        $result = $response->YoyakuSyunoBarCodeResult;
+
+        return [
+            'Result' => $result->Result ?? '',
+            'DataSyubetsu' => $result->DataSyubetsu ?? '',
+            'KKessaiNo' => $result->KKessaiNo ?? '',
+            'FreeArea' => $result->FreeArea ?? '',
+            'SyunoPayCode' => $result->SyunoPayCode ?? '',
+            'SyunoRecvNum' => $result->SyunoRecvNum ?? '',
+            'BcJigyosyaNo' => $result->BcJigyosyaNo ?? '',
+            'BcAnkenNo' => $result->BcAnkenNo ?? '',
+            'BcNinsyoKey' => $result->BcNinsyoKey ?? '',
+            'SyunoMMSNo' => $result->SyunoMMSNo ?? '',
+        ];
+    }
+
+    /**
+     * 文字列値をShift_JISに変換
+     *
+     * @param array $data 変換対象データ
+     * @return array 変換済みデータ
+     */
+    private function convertToSjis(array $data): array
+    {
+        // 変換対象フィールド（日本語が含まれる可能性のあるフィールド）
+        $targetFields = ['SyunoNameKanji', 'SyunoNameKana'];
+
+        foreach ($targetFields as $field) {
+            if (isset($data[$field]) && $data[$field] !== '') {
+                $data[$field] = mb_convert_encoding($data[$field], 'SJIS', 'UTF-8');
+            }
+        }
+
+        // SyunoFreeArray内の値も変換
+        if (isset($data['SyunoFreeArray']) && is_array($data['SyunoFreeArray'])) {
+            foreach ($data['SyunoFreeArray'] as $index => $value) {
+                if (is_string($value) && $value !== '' && $value !== '*') {
+                    $data['SyunoFreeArray'][$index] = mb_convert_encoding($value, 'SJIS', 'UTF-8');
+                }
+            }
+        }
+
+        return $data;
+    }
+}
diff --git a/bootstrap/app.php b/bootstrap/app.php
index 22e29ae..af2cbf7 100644
--- a/bootstrap/app.php
+++ b/bootstrap/app.php
@@ -15,6 +15,7 @@ return Application::configure(basePath: dirname(__DIR__))
         // APIキー認証ミドルウェアのエイリアス登録
         $middleware->alias([
             'api.key' => \App\Http\Middleware\ApiKeyAuthentication::class,
+            'wellnet.ip' => \App\Http\Middleware\WellnetIpWhitelist::class,
         ]);
     })
     ->withExceptions(function (Exceptions $exceptions) {
diff --git a/config/wellnet.php b/config/wellnet.php
new file mode 100644
index 0000000..4224582
--- /dev/null
+++ b/config/wellnet.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * Wellnet 決済システム接続設定
+ *
+ * テスト環境と本番環境の切替は WELLNET_ENV で行う。
+ */
+
+$env = env('WELLNET_ENV', 'test');
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | 環境設定
+    |--------------------------------------------------------------------------
+    */
+    'env' => $env,
+
+    /*
+    |--------------------------------------------------------------------------
+    | アプリ側運用設定
+    |--------------------------------------------------------------------------
+    */
+    'link_ttl_minutes' => (int) env('WELLNET_LINK_TTL_MINUTES', 15),
+
+    /*
+    |--------------------------------------------------------------------------
+    | SOAP接続情報（YoyakuSyunoBarCode）
+    |--------------------------------------------------------------------------
+    */
+    'soap' => [
+        'user_id' => env('WELLNET_SOAP_USER', ''),
+        'password' => env('WELLNET_SOAP_PASSWORD', ''),
+        'endpoint' => env("WELLNET_SOAP_ENDPOINT_" . strtoupper($env), ''),
+        'namespace' => env('WELLNET_SOAP_NAMESPACE', 'http://rem.kessai.info/Kessai/'),
+        'wsdl_path' => storage_path('app/wellnet/Yoyaku.wsdl'),
+        'encoding' => 'Shift_JIS',
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | 決済受付固定値（事業者情報）
+    |--------------------------------------------------------------------------
+    */
+    'payment' => [
+        'data_syubetsu' => '4',
+        'pay_code' => env('WELLNET_PAY_CODE', ''),
+        'corp_code' => env('WELLNET_CORP_CODE', ''),
+        'jigyosya_no' => env('WELLNET_JIGYOSYA_NO', ''),
+        'anken_no' => env('WELLNET_ANKEN_NO', ''),
+        'ninsyo_key' => env('WELLNET_NINSYO_KEY', ''),
+        'service_key' => env('WELLNET_SERVICE_KEY', ''),
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | JLP画面URL（支払案内画面）
+    |--------------------------------------------------------------------------
+    */
+    'jlp' => [
+        'base_url' => env("WELLNET_JLP_BASE_" . strtoupper($env), 'https://link.kessai.info'),
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | WPS画面URL（クレジット決済画面）
+    |--------------------------------------------------------------------------
+    */
+    'wps' => [
+        'base_url' => env("WELLNET_WPS_BASE_" . strtoupper($env), 'https://wps.kessai.info'),
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | クレジットAPI（CAFIS外部インターフェース）
+    |--------------------------------------------------------------------------
+    */
+    'credit_api' => [
+        'base_url' => env("WELLNET_CREDIT_API_BASE_" . strtoupper($env), ''),
+        'company_code' => env('WELLNET_CREDIT_COMPANY_CODE', ''),
+        'auth_key' => env('WELLNET_CREDIT_AUTH_KEY', ''),
+        'timeout' => 120,
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | 入金通知（Callback）設定
+    |--------------------------------------------------------------------------
+    */
+    'callback' => [
+        'md5_secret' => env('WELLNET_MD5_SECRET_' . strtoupper($env), env('WELLNET_MD5_SECRET', '')),
+        'allowed_ips' => array_filter(explode(',', env('WELLNET_ALLOWED_IPS_' . strtoupper($env), env('WELLNET_ALLOWED_IPS', '')))),
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | 店舗コードマッピング
+    |--------------------------------------------------------------------------
+    */
+    'store_codes' => [
+        '00011' => 'セブン-イレブン',
+        '00021' => 'ローソン',
+        '00031' => 'ファミリーマート',
+        '00032' => 'ファミリーマート',
+        '00051' => 'ミニストップ',
+        '00061' => 'デイリーヤマザキ',
+        '00071' => 'セイコーマート',
+        '10001' => 'ゆうちょ銀行ATM',
+        '10002' => '銀行ATM',
+        '99661' => 'JCBカード決済',
+        '99662' => 'VISAカード決済',
+        '99663' => 'Mastercardカード決済',
+        '99664' => 'AMEXカード決済',
+        '99665' => 'Dinersカード決済',
+    ],
+
+];
diff --git a/database/migrations/2026_01_23_000001_create_payment_transaction_table.php b/database/migrations/2026_01_23_000001_create_payment_transaction_table.php
new file mode 100644
index 0000000..84664a9
--- /dev/null
+++ b/database/migrations/2026_01_23_000001_create_payment_transaction_table.php
@@ -0,0 +1,49 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * 決済トランザクションテーブル作成
+     */
+    public function up(): void
+    {
+        Schema::create('payment_transaction', function (Blueprint $table) {
+            $table->increments('payment_transaction_id')->comment('決済トランザクションID');
+            $table->string('syuno_recv_num', 20)->unique()->comment('受付番号');
+            $table->string('payment_type', 10)->comment('決済種別（credit/rem）');
+            $table->string('status', 20)->default('入金待ち')->comment('決済ステータス');
+            $table->integer('amount')->comment('決済金額');
+            $table->datetime('pay_limit')->nullable()->comment('支払期限');
+            $table->string('kessai_no', 255)->nullable()->comment('暗号化決済番号（KKessaiNo）');
+            $table->string('payment_number', 50)->nullable()->comment('CAFIS決済番号（credit用）');
+            $table->string('name_kanji', 40)->nullable()->comment('お客様氏名（漢字）');
+            $table->string('name_kana', 40)->nullable()->comment('お客様氏名（カナ）');
+            $table->string('tel', 13)->nullable()->comment('電話番号');
+            $table->tinyInteger('subscription_flg')->default(0)->comment('継続課金フラグ');
+            $table->datetime('paid_datetime')->nullable()->comment('入金日時');
+            $table->string('store_code', 10)->nullable()->comment('店舗コード');
+            $table->string('cvs_code', 5)->nullable()->comment('CVS本部コード');
+            $table->integer('refund_amount')->nullable()->comment('返金済金額');
+            $table->string('refund_status', 20)->nullable()->comment('返金ステータス');
+            $table->string('refund_id', 50)->nullable()->comment('返金処理ID');
+            $table->json('free_area')->nullable()->comment('フリースペース（JSON）');
+            $table->text('wellnet_response')->nullable()->comment('Wellnet応答生データ');
+            $table->timestamps();
+
+            $table->index('status', 'idx_payment_transaction_status');
+            $table->index('payment_type', 'idx_payment_transaction_type');
+        });
+    }
+
+    /**
+     * テーブル削除
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('payment_transaction');
+    }
+};
diff --git a/database/migrations/2026_01_23_000002_create_credit_subscription_table.php b/database/migrations/2026_01_23_000002_create_credit_subscription_table.php
new file mode 100644
index 0000000..07388f7
--- /dev/null
+++ b/database/migrations/2026_01_23_000002_create_credit_subscription_table.php
@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * 継続課金会員登録テーブル作成
+     */
+    public function up(): void
+    {
+        Schema::create('credit_subscription', function (Blueprint $table) {
+            $table->increments('credit_subscription_id')->comment('継続課金登録ID');
+            $table->unsignedInteger('user_id')->comment('利用者ID');
+            $table->string('credit_member_id', 20)->nullable()->comment('Wellnet側会員ID');
+            $table->unsignedInteger('credit_card_seq')->nullable()->comment('カード通番');
+            $table->tinyInteger('subscription_status')->nullable()->comment('登録状態（1=有効、0=無効/解除）');
+            $table->datetime('registered_at')->nullable()->comment('初回登録日時');
+            $table->timestamps();
+            $table->unsignedInteger('operator_id')->nullable()->comment('更新オペレータID');
+
+            $table->index('user_id', 'idx_credit_subscription_user_id');
+            $table->index('subscription_status', 'idx_credit_subscription_status');
+            $table->foreign('user_id')->references('user_id')->on('user');
+        });
+    }
+
+    /**
+     * テーブル削除
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('credit_subscription');
+    }
+};
diff --git a/database/migrations/2026_01_23_000003_create_credit_payment_log_table.php b/database/migrations/2026_01_23_000003_create_credit_payment_log_table.php
new file mode 100644
index 0000000..0068e2a
--- /dev/null
+++ b/database/migrations/2026_01_23_000003_create_credit_payment_log_table.php
@@ -0,0 +1,45 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * 継続課金請求履歴テーブル作成
+     */
+    public function up(): void
+    {
+        Schema::create('credit_payment_log', function (Blueprint $table) {
+            $table->increments('credit_payment_log_id')->comment('請求履歴ID');
+            $table->unsignedInteger('credit_subscription_id')->nullable()->comment('継続課金登録ID');
+            $table->string('contract_id', 20)->nullable()->comment('定期契約ID');
+            $table->unsignedInteger('user_id')->nullable()->comment('利用者ID');
+            $table->decimal('request_amount', 10, 0)->nullable()->comment('請求金額');
+            $table->date('execute_date')->nullable()->comment('継続課金実施日');
+            $table->datetime('request_at')->nullable()->comment('API請求日時');
+            $table->string('response_result', 10)->nullable()->comment('応答結果（OK/NG）');
+            $table->string('response_code', 10)->nullable()->comment('エラーコード');
+            $table->string('response_message', 255)->nullable()->comment('エラーメッセージ');
+            $table->string('payment_number', 50)->nullable()->comment('CAFIS決済番号');
+            $table->string('status', 20)->nullable()->comment('処理状態（success/error/pending）');
+            $table->timestamps();
+
+            $table->index('credit_subscription_id', 'idx_credit_payment_log_subscription');
+            $table->index('contract_id', 'idx_credit_payment_log_contract');
+            $table->index('user_id', 'idx_credit_payment_log_user');
+            $table->index('execute_date', 'idx_credit_payment_log_execute_date');
+            $table->foreign('credit_subscription_id')->references('credit_subscription_id')->on('credit_subscription');
+            $table->foreign('user_id')->references('user_id')->on('user');
+        });
+    }
+
+    /**
+     * テーブル削除
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('credit_payment_log');
+    }
+};
diff --git a/routes/api.php b/routes/api.php
index 0d76ac1..d6c30bf 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -2,6 +2,12 @@
 
 use Illuminate\Support\Facades\Route;
 use App\Http\Controllers\Api\UserInformationHistoryController;
+use App\Http\Controllers\Api\CreditPaymentController;
+use App\Http\Controllers\Api\RemPaymentController;
+use App\Http\Controllers\Api\PaymentCallbackController;
+use App\Http\Controllers\Api\PaymentStatusController;
+use App\Http\Controllers\Api\PaymentUpdateController;
+use App\Http\Controllers\Api\RefundController;
 
 /*
 |--------------------------------------------------------------------------
@@ -35,4 +41,40 @@ Route::middleware(['api.key'])->group(function () {
     Route::put('user-information-history/{id}', [UserInformationHistoryController::class, 'update'])
         ->where('id', '[0-9]+');
 
+    /*
+    |--------------------------------------------------------------------------
+    | API 1, 2, 4, 5, 6 - 決済API（API Key認証あり）
+    |--------------------------------------------------------------------------
+    |
+    | POST /api/newwipe/credit/link                  - クレジット支払リンク生成
+    | POST /api/newwipe/credit/subscription/charge   - 継続課金請求
+    | POST /api/newwipe/rem/link                     - REM支払案内リンク生成
+    | GET  /api/newwipe/status                       - 決済ステータス取得
+    | PUT  /api/newwipe/update                       - 決済情報更新
+    | POST /api/newwipe/refund                       - 返金
+    |
+    */
+    Route::prefix('newwipe')->group(function () {
+        Route::post('credit/link', [CreditPaymentController::class, 'createLink']);
+        Route::post('credit/subscription/charge', [CreditPaymentController::class, 'chargeSubscription']);
+        Route::post('rem/link', [RemPaymentController::class, 'createLink']);
+        Route::get('status', [PaymentStatusController::class, 'show']);
+        Route::match(['put', 'post'], 'update', [PaymentUpdateController::class, 'update']);
+        Route::post('refund', [RefundController::class, 'refund']);
+    });
+
+});
+
+/*
+|--------------------------------------------------------------------------
+| API 3 - 決済結果通知（Callback）
+|--------------------------------------------------------------------------
+|
+| POST /api/newwipe/callback - Wellnet入金通知受信
+|
+| 認証: IP白名単のみ（API Key不要）
+|
+*/
+Route::middleware(['wellnet.ip'])->group(function () {
+    Route::match(['get', 'post'], 'newwipe/callback', [PaymentCallbackController::class, 'receive']);
 });
diff --git a/routes/console.php b/routes/console.php
index 3c9adf1..a6cc0f4 100644
--- a/routes/console.php
+++ b/routes/console.php
@@ -2,7 +2,11 @@
 
 use Illuminate\Foundation\Inspiring;
 use Illuminate\Support\Facades\Artisan;
+use Illuminate\Support\Facades\Schedule;
 
 Artisan::command('inspire', function () {
     $this->comment(Inspiring::quote());
 })->purpose('Display an inspiring quote');
+
+// 支払期限切れチェック（15分毎）
+Schedule::command('payment:expire')->everyFifteenMinutes();