AgentBIT JWT Decode

x402

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 2026-10-29).

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

Price / call$0.0015

Seller volume →—

Success—

StatusUnknown

How this service works

Decode a JSON Web Token (JWT) into its header and payload claims without signature verification. Inspect exp, iss, sub and custom claims.

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.

Example use cases

Inspect auth token expiry

“I have this JWT from our auth system and I need to know when it expires and what user it belongs to — can you decode it and pull out the exp, sub, and iat fields? Token: eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJ1c2VyXzQ1NiIsImV4cCI6MTcwMDAwMDAwMH0.abc123”

Debug API token claims

“We're getting auth errors in our app and I think the JWT claims might be wrong — decode this token and tell me exactly what claims are in the payload: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyb2xlIjoiYWRtaW4iLCJ0ZW5hbnQiOiJhY21lIn0.xyz789”

Extract user identity from bearer token

“Given this bearer token from the request header, can you decode the JWT and tell me the user ID, email, and any role or permission claims embedded in it? Token: eyJhbGciOiJSUzI1NiIsImtpZCI6ImtleS0xIn0.eyJlbWFpbCI6ImJvYkBleGFtcGxlLmNvbSIsInJvbGUiOiJ2aWV3ZXIifQ.sig”

Technical details

Endpoint

POSThttps://agentbit.app/v1/jwt/decode?utm_source=zero.xyz

When to prefer

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.

Side effects

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

Input

Schema · Request body

Field	Type	Description
input	string

Output

Schema · Response

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

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