x402 Hash API – JWT Decode

Choose this endpoint when you need a quick, pay-per-call JWT decode without setting up a local JWT library or managing dependencies. Ideal for AI agents that occasionally need to inspect token claims at runtime, debug authentication flows, or extract user identity from tokens in a serverless, stateless manner. Prefer alternatives if you need signature verification against a known secret or JWKS endpoint, or if you are decoding tokens at high volume where per-call cost accumulates.

• Malformed JWT (not three base64url segments separated by dots) returns an error
• Missing or empty 'token' field in request body causes a validation error
• Expired or invalid signature may result in verified=false rather than an error
• Network or Vercel cold-start latency on first call
• Payment failure if USDC balance insufficient for $0.002 fee