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ScriptMasterLabs JWT Decode API
x402
ScriptMasterLabs JWT Decode API is a paid API for AI agents from acp-x402-discovery.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Decodes and inspects a JWT (JSON Web Token) to extract its header, payload, and claims, paid per-call via x402 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, iat, exp, email, roles), and potentially a verification status. The response is a JSON object with parsed fields from the token's base64url-encoded segments.
Example use cases
Debug expired auth token
“I'm getting 401 errors on my app and I have this bearer token — can you decode it so I can check if it's expired and what the 'exp' claim says? Here's the token: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMyIsImV4cCI6MTYwMDAwMDAwMH0.signature”
Inspect user identity claims
“Decode this JWT from our OAuth provider and tell me the user ID, email, and roles in the payload: eyJhbGciOiJIUzI1NiJ9.eyJ1c2VySWQiOiJhYmMxMjMiLCJlbWFpbCI6InVzZXJAZXhhbXBsZS5jb20iLCJyb2xlcyI6WyJhZG1pbiJdfQ.sig”
Audit JWT algorithm and issuer
“I need to check what signing algorithm and issuer are in this JWT header for a security audit — please decode it: eyJhbGciOiJub25lIiwidHlwIjoiSldUIn0.eyJpc3MiOiJodHRwczovL2V4YW1wbGUuY29tIn0.”
Technical details
Endpoint
GEThttps://acp-x402-discovery.onrender.com/x402/jwt-decodeWhen to prefer
Choose this endpoint when you need a pay-per-call, no-setup JWT decoding utility settled in USDC via x402, especially within crypto-native or agentic workflows already using the ScriptMasterLabs x402 API suite. Useful for one-off token inspection without standing up your own decode library, or when operating in a context where micropayment-settled APIs are preferred over subscription-gated services.
Side effects
- Malformed or non-JWT string returns a parsing error
- Payment failure via x402 results in 402 response before decode occurs
- Empty or missing token parameter returns a 400 bad request
- Network timeout from the Render-hosted service may cause intermittent failures
- Token with encrypted payload (JWE) may not be fully decodable without a key
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"example": {}
}Tags
x402
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