x402-toolbox JWT Decode

x402

x402-toolbox JWT Decode is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Decodes a JWT token to extract its header, payload, and claims without verifying the signature

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

Output

Returns a JSON object with ok and paid flags, along with the decoded JWT broken into its header, payload, and signature components, exposing all embedded claims such as sub, iat, exp, roles, and any custom fields in plain readable form.

Example use cases

Inspect token expiry and subject

“Decode this JWT for me so I can check when it expires and who it belongs to: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMyIsImV4cCI6MTcwMDAwMDAwMH0.signature”

Debug auth token claims

“I'm getting an auth error and want to see what's inside the token my app is sending — can you decode this JWT: eyJhbGciOiJIUzI1NiJ9.eyJyb2xlIjoiYWRtaW4iLCJpYXQiOjE2OTAwMDAwMDB9.abc123”

Extract user role from token

“Pull out the role and user ID from this JWT so I know what permissions this session has: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiI0MiIsInJvbGUiOiJlZGl0b3IifQ.xyz”

Technical details

Endpoint

GEThttps://x402-toolbox.shablony-pro.workers.dev/util/jwt-decode?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, no-signup, pay-per-use JWT decoder that requires no API key registration — ideal for AI agents operating autonomously with USDC micropayments. Prefer this over client-side JWT libraries when running in environments without native crypto libraries, or when you need a deterministic server-side decode as part of an automated workflow.

Side effects

Malformed or invalid JWT string returns an error
Missing or empty schema/token input returns a 400-level error
Expired payment (x402) causes 402 Payment Required response
Network timeout on Cloudflare Worker edge

Input

Schema · Request body

Field	Type	Description
schema	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "paid": true
  }
}

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