78trust / 100

Code Jwt

by Duo Data Utilities in Security & trust

x402 APIPassing, checked 8 min ago

Decode a JSON Web Token without verifying it: returns the header, the claims, the signature length and algorithm, and a computed view of the time claims — whether exp has passed, whether nbf is in the future, and the remaining lifetime in seconds against a supplied or current instant. Reports structural problems such as a missing part, invalid base64url or an alg of none. It does not and cannot verify the signature; do not use it to decide trust.

GET https://api.duoleads.com/v1/code/jwt

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
131 ms typical, 529 ms slowest 5%
Last check
8 min ago
Next check
in 23 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.duoleads.com/v1/code/jwt?at=2026-09-28T00%3A00%3A00Z&token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c"
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.duoleads.com%2Fv1%2Fcode%2Fjwt
const res = await pay("https://api.duoleads.com/v1/code/jwt?at=2026-09-28T00%3A00%3A00Z&token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c");
console.log(await res.json());

Example input

{
  "at": "2026-09-28T00:00:00Z",
  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c"
}

Example output

{
  "data": {
    "alg": "HS256",
    "claims": {
      "aud": null,
      "exp": null,
      "iat": 1516239022,
      "iss": null,
      "jti": null,
      "nbf": null,
      "sub": "1234567890"
    },
    "header": {
      "alg": "HS256",
      "typ": "JWT"
    },
    "kid": null,
    "parts": 3,
    "payload": {
      "iat": 1516239022,
      "name": "John Doe",
      "sub": "1234567890"
    },
    "reason": null,
    "signature_bytes": 32,
    "signature_verified": false,
    "time": {
      "age_seconds": 274314578,
      "evaluated_at": "2026-09-28T00:00:00Z",
      "expired": null,
      "expires_in_seconds": null,
      "not_yet_valid": null
    },
    "typ": "JWT",
    "valid_structure": true,
    "warnings": []
  },
  "meta": {
    "computed_at": "2026-09-28T12:00:00.000Z",
    "deterministic": true,
    "disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
    "price_usd": "0.05",
    "request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D"
  },
  "ok": true,
  "route": "/v1/code/jwt",
  "version": "1.0.0"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

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8 min agoPassed402435 ms$0.05
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