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47620 JWT Decode API
x402
47620 JWT Decode API is a paid API for AI agents from 47620.xyz, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).
Decodes a JWT token and extracts header, payload, and standard claims (sub, iss, aud, exp, iat, nbf, alg, kid) with expiration status — without verifying the signature.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decode a JWT (JSON Web Token): returns the header, payload and the extracted claims (subject sub, issuer iss, audience aud, expiration exp with `expired` flag and seconds remaining, issued-at iat, not-before nbf, algorithm alg, key id kid). Decode-only — the signature is NOT verified, so claims are informational. Pass the token via ?token=<jwt> (query param, no length limit).
Output
A JSON object containing the decoded JWT header (including algorithm and key ID), the full payload with all claims, and individually extracted standard claims: subject (sub), issuer (iss), audience (aud), expiration (exp) with an 'expired' boolean flag and seconds remaining until/since expiry, issued-at (iat), not-before (nbf), algorithm (alg), and key ID (kid).
Example use cases
Debugging expired auth token
“I've got a JWT that keeps getting rejected — can you decode it and tell me whether it's expired and how long ago it expired? Here's the token: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1c2VyXzEyMyIsImV4cCI6MTY4MDAwMDAwMH0.sig”
Inspecting token issuer and audience
“Can you decode this JWT and tell me who issued it, what audience it's meant for, and what algorithm was used to sign it? Token: eyJhbGciOiJSUzI1NiIsImtpZCI6ImtleS0xIn0.eyJpc3MiOiJodHRwczovL2lkcC5leGFtcGxlLmNvbSIsImF1ZCI6ImFwaS5leGFtcGxlLmNvbSJ9.sig”
Extracting user identity from token
“I need to know the subject (user ID) and when this token was issued — please decode this JWT and pull out the sub and iat claims: eyJhbGciOiJFUzI1NiJ9.eyJzdWIiOiJ1c2VyXzc4OSIsImlhdCI6MTY5MDAwMDAwMH0.sig”
Technical details
Endpoint
GEThttps://47620.xyz/x/util/jwt-decode?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to quickly inspect the contents and expiration status of a JWT without needing signature verification — ideal for debugging, logging, or extracting claims for informational purposes. Prefer this over a full JWT validation endpoint when you already trust the token source or just need to read its payload. It is also useful for agents that need to extract a user ID, issuer, or expiration time from a token at runtime without maintaining signing keys.
Side effects
- Malformed or non-JWT string returns an error response
- Missing ?token= query parameter returns a bad request error
- Very long tokens may hit URL length limits depending on client configuration
- No signature verification — tampered tokens will still decode without error
- Non-standard or nested JWTs may not parse all claims correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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