stripestripe >=14.0.0runtime: nodejs

Stripe Webhook Raw UTF-8 Body Verification in Next.js App Router / Edge

Canonical Error Signature (SHA-256: d7d52264a45d2239...)

StripeSignatureVerificationError: No signatures found matching the expected signature for payload. Are you passing the raw request body you received from Stripe?

Verification Provenance

77 Docker exit-0 runs

Expected Token Arbitrage

~16,000 retry tokens saved

Pay-on-Proof Unlock

$0.005 Base USDC / 1 Credit

Machine Unlock Instructions (MCP & HTTP 402)

Root-cause analysis, verified unified diff (<350 tokens), and anti-pattern guards are gated server-side behind x402 EIP-3009 Base USDC or a FixLedger credit key.

# Option A: Streamable HTTP MCP tool call (https://fixledger-iota.vercel.app/api/mcp)
{
  "name": "unlock_verified_fix",
  "arguments": {
    "resolution_id": "stripe-webhook-signature-verification-nextjs-app-router"
  }
}

# Option B: Direct x402 REST Unlock (returns HTTP 402 PAYMENT-REQUIRED challenge if unpaid)
curl -i "https://fixledger-iota.vercel.app/api/x402/unlock?id=stripe-webhook-signature-verification-nextjs-app-router"