# JWT Decode (No Signature Verification)

> 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.

## Facts

- Endpoint: GET https://intel.rallylive.ca/dev/jwt-decode
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/jwt-decode-no-signature-verification-1147c2dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AO8Scq-_OQNB0KqTETia2

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability jwt-decode-no-signature-verification-1147c2dd
```

Example prompt: Can you decode this JWT for me and tell me what claims are in it, whether it's expired, and if there are any security warnings like alg=none or missing exp? Here's the token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

## When to prefer this

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.

## Known failure modes

- 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

## 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).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/jwt-decode-no-signature-verification-1147c2dd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)