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Delx JWT Exp Seconds
x402
Delx JWT Exp Seconds is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Reads the exp claim from a JWT token and returns the number of seconds remaining until expiration, without verifying the signature
Price / call$0.001
Success—
StatusUnknown
How this service works
Read JWT exp claim seconds remaining without verifying signature — first-party local utility for agent preflight and proven micro-utils expansion. Returns deterministic machine-readable JSON for $0.001 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, no web search, no live RPC, and no mediagen. Results are advisory; the caller owns authorization, budgets, and production controls. Sibling of Delx routes that alread…
Output
Returns a deterministic JSON object containing the number of seconds remaining until the JWT's exp claim, computed locally without signature verification. May also include the raw exp timestamp. Result is advisory — no authorization decisions are made by the endpoint.
Example use cases
Token refresh preflight in agent pipeline
“Before making the next API call, check how many seconds are left on this JWT — eyJhbGciOiJIUzI1NiJ9.eyJleHAiOjE3MTkwMDAwMDB9.sig — so I know whether to refresh it first.”
Warn user when session is nearly expired
“Read the exp claim from this token and tell me how many seconds of session time remain so I can warn the user if it's under 60 seconds: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE3MTkwMDAwMDB9.abc”
Debug why a request is failing with 401
“I'm getting 401 errors and I think my token might already be expired — can you check how many seconds are left on this JWT: eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJhZ2VudCIsImV4cCI6MTcxOTAwMDAwMH0.xyz”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/jwt-exp-secondsWhen to prefer
Use this endpoint when an agent needs a fast, cheap, stateless preflight check on JWT token lifetime before making an API call — especially when signature verification is unnecessary (handled elsewhere) and you only need to know how much time is left. Ideal for refresh-gate logic, session warning UX, or debugging 401 errors in an automated pipeline. Prefer this over building your own JWT parsing logic when you want a deterministic, zero-dependency utility at $0.001 USDC.
Side effects
- Token is malformed or not a valid JWT — returns error indicating unparseable token
- Token has no exp claim — returns error or null seconds remaining
- Token is already expired — returns zero or negative seconds remaining
- Empty or missing token field — returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| token | string | Input field: token. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"exp": 4800000000,
"note": "claims only — signature not verified",
"schema": "delx/util-jwt-exp-seconds/v1",
"expired": false,
"seconds_remaining": 3011913675,
"signature_verified": false
}
}Tags
x402
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