# AgentBIT JWT Decode

> AgentBIT JWT Decode is a paid API for AI agents from agentbit.app, paid per call via x402, $0.0015/call, status unknown (last checked 2026-09-15).

Decodes a JWT token and returns its header, payload, and signature components without verification

## Facts

- Endpoint: POST https://agentbit.app/v1/jwt/decode
- Price: $0.0015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentbit-jwt-decode-2c25210d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AQFEIA2oeXCaz5X82Xkwr

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 agentbit-jwt-decode-2c25210d -d '<json body>'
```

Example prompt: Can you decode this JWT for me and show me what's inside it — especially the payload claims like exp, sub, and iat? Here's the token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

## When to prefer this

Choose this endpoint when you need a fast, no-signup, pay-per-call JWT decode without standing up your own parsing library or managing API keys. Ideal for AI agents that occasionally need to inspect token claims on the fly, debug authentication issues, or extract identity fields from bearer tokens without performing full signature verification. Prefer this over a full JWT validation endpoint when you only need to read the payload rather than verify its authenticity.

## Known failure modes

- Malformed or non-JWT string returns an error indicating invalid token format
- Missing or empty input field returns a validation error
- Truncated JWT with fewer than 3 dot-separated segments fails to parse
- Payment failure via x402 results in 402 response before processing

## How this service works

Live web, business, finance and security tools for AI agents. Pay per call with x402 — no signup, no API keys.

## Output

A JSON object containing the decoded JWT broken into its three parts: the header (algorithm, token type, key ID), the payload (all embedded claims such as sub, iat, exp, email, roles, and any custom fields), and the raw base64url-encoded signature string — returned without cryptographic verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentbit-jwt-decode-2c25210d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentbit.app](https://www.zero.xyz/host/agentbit.app/llms.txt)