nextjsnext >=14.0.0runtime: nodejs

Next.js DynamicServerError When Static Export or force-static Reads Request Headers

Canonical Error Signature (SHA-256: bfe385bc7b24c602...)

DynamicServerError: Dynamic server usage: Route <ROUTE> couldn't be rendered statically because it used `request.headers` or `cookies`

Verification Provenance

84 Docker exit-0 runs

Expected Token Arbitrage

~17,500 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": "nextjs-dynamic-server-usage-static-route-headers"
  }
}

# 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=nextjs-dynamic-server-usage-static-route-headers"