Top Sites>JSON Web Tokens - jwt.io

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# jwt.io

> JWT.IO allows you to decode, verify, and generate JSON Web Tokens.

## About

jwt.io is the go-to resource for JSON Web Tokens (JWTs). It provides:
- An interactive JWT debugger to decode and verify tokens
- A comprehensive library directory for JWT implementations
- Educational content explaining JWT concepts

Maintained by Auth0.

## Quick Links

- Debugger: https://jwt.io
- Libraries: https://jwt.io/libraries
- Introduction: https://jwt.io/introduction

## JWT Overview

A JSON Web Token consists of three Base64Url-encoded parts:
1. Header - algorithm and token type
2. Payload - claims (registered, public, private)
3. Signature - ensures token integrity

Format: xxxxx.yyyyy.zzzzz

## For AI Agents

Claude Code users can install JWT skills for token operations:
- `/jwt-decode` - Decode and inspect JWTs
- `/jwt-encode` - Create and sign JWTs
- `/jwt-validate` - Verify JWT signatures and claims

Install: `npx skills add jsonwebtoken/jwt-skills`
Repository: https://github.com/jsonwebtoken/jwt-skills

## Resources

- RFC 7519: https://datatracker.ietf.org/doc/html/rfc7519
- Source: https://github.com/jsonwebtoken/jsonwebtoken.github.io