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ScriptMasterLabs JWT Decode API
x402
ScriptMasterLabs JWT Decode API is a paid API for AI agents from acp-x402-scriptmasterlabs.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-16).
Decodes and inspects the contents of a JWT (JSON Web Token) for its claims, header, and payload via a pay-per-call endpoint settled in USDC on Base.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call crypto, RWA, federal, SEC, and compliance APIs. Settled in USDC on Base via x402. Hyphen routes only (e.g. /x402/rwa-aggregates, /x402/gas-tracker).
Output
Returns the decoded JWT structure including the header (algorithm, token type), payload (all claims such as sub, iss, exp, iat, roles, and any custom fields), and optionally signature metadata — without requiring a secret key for verification.
Example use cases
Debug auth token in dev flow
“I'm seeing a 401 error and I want to inspect what's actually inside this JWT to check if the expiry or issuer is wrong: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMyIsImV4cCI6MTcwMDAwMDAwMH0.signature — can you decode it for me?”
Compliance audit of token claims
“For our compliance audit I need to extract and log all the claims from this JWT token so we can verify the roles and permissions it encodes: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyb2xlIjoiYWRtaW4iLCJvcmciOiJhY21lIn0.sig”
Check token expiry before API call
“Before I make this downstream API call, can you decode this JWT and tell me if it's expired and who the issuer is? Token: eyJhbGciOiJIUzI1NiJ9.eyJpYXQiOjE2MDAwMDAwMDAsImV4cCI6MTYwMDAwMzYwMH0.abc123”
Technical details
Endpoint
GEThttps://acp-x402-scriptmasterlabs.onrender.com/x402/jwt-decode?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, lightweight, pay-per-call JWT decode without deploying your own library, especially in agentic workflows where installing dependencies is not feasible, or when you need to audit/log JWT contents at $0.001 per call with USDC micropayment settlement on Base.
Side effects
- Malformed or non-JWT string input returns an error or empty response
- Expired payment or failed USDC settlement on Base results in 402 Payment Required
- Network timeout due to cold-start on Render free tier
- Missing or empty token parameter returns a 400 Bad Request
- Encrypted JWTs (JWE) may not be decodable without the private key
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"example": {}
}Tags
x402
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