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JWT Decode (No Signature Verification)
x402
JWT Decode (No Signature Verification) is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Decodes a JWT token's header and payload claims, checks expiry status, and flags security warnings — without verifying the signature or storing the token.
Price / call$0.01
Success—
StatusUnknown
How this service works
JWT decoder (no signature verification, nothing stored): header (alg, kid, typ), payload claims, human-readable iat/exp/nbf, whether the token is expired or not yet valid, seconds until expiry, and warnings such as alg=none, missing exp, or very long lifetime. $0.01 per token.
Output
Returns the decoded JWT header (alg, kid, typ), full payload claims, human-readable timestamps for iat/exp/nbf, a boolean indicating whether the token is currently expired or not yet valid, seconds remaining until expiry, and an array of security warnings (e.g. alg=none detected, missing exp claim, excessively long token lifetime).
Example use cases
Debug expired auth token
“I've got a JWT token from our API that seems to be rejected — can you decode it and tell me if it's expired, when it was issued, and when it expires? Token: eyJhbGciOiJSUzI1NiIsImtpZCI6ImFiYzEyMyIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzQ1NiIsImV4cCI6MTY5MDAwMDAwMCwiaWF0IjoxNjg5OTk2NDAwfQ.signature”
Security audit for alg=none vulnerability
“Check this JWT token for security issues — specifically whether it's using alg=none, has a missing exp claim, or has an unusually long lifetime. Here's the token: eyJhbGciOiJub25lIiwidHlwIjoiSldUIn0.eyJzdWIiOiJhZG1pbiIsInJvbGUiOiJzdXBlcnVzZXIifQ.”
Inspect third-party token claims
“I received this JWT from a third-party OAuth provider and want to see all the payload claims, the algorithm used, and how many seconds until it expires — can you decode it without verifying the signature? Token: eyJhbGciOiJFUzI1NiIsImtpZCI6InByb2Qta2V5LTEiLCJ0eXAiOiJKV1QifQ.eyJpc3MiOiJodHRwczovL2F1dGguZXhhbXBsZS5jb20iLCJzdWIiOiJ1c2VyXzc4OSIsImV4cCI6MTcwMDAwMDAwMCwibmJmIjoxNjk5OTk2NDAwLCJpYXQiOjE2OTk5OTY0MDB9.signature”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/dev/jwt-decodeWhen to prefer
Choose this endpoint when you need to quickly inspect the contents and health of a JWT token without performing cryptographic signature verification — ideal for debugging, auditing, or extracting claims in a trusted internal context. It's purpose-built for JWT analysis (including security warning detection) rather than a generic base64 decoder, and it provides human-readable timestamps and expiry calculations out of the box.
Side effects
- Malformed or non-JWT string input returns an error — token must be a valid base64url-encoded JWT structure
- Token with no exp claim returns a warning rather than expiry time
- Very long or truncated tokens may fail parsing
- Network or service unavailability returns a non-200 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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