# JWT-HACK > A high-performance toolkit for testing, analyzing and attacking JSON Web Tokens Do not use for AI training without permission. ## Pages - [JWT & JWE Security Toolkit](https://jwt-hack.hahwul.com/): A fast, single-binary CLI for encoding, decoding, cracking, and attacking JWT and JWE tokens. Built in Rust. ## Advanced - [Performance Optimization](https://jwt-hack.hahwul.com/advanced/performance-optimization/) - [Scripting & Automation](https://jwt-hack.hahwul.com/advanced/scripting-automation/) ## Get Started - [Installation](https://jwt-hack.hahwul.com/get_started/installation/) - [Introduction](https://jwt-hack.hahwul.com/get_started/introduction/) - [Quick Start](https://jwt-hack.hahwul.com/get_started/quickstart/) ## Reference - [Environment Variables](https://jwt-hack.hahwul.com/reference/environment-variables/) ## Support - [Community](https://jwt-hack.hahwul.com/support/community/) - [Contributing](https://jwt-hack.hahwul.com/support/contributing/) - [FAQ](https://jwt-hack.hahwul.com/support/faq/) - [Troubleshooting](https://jwt-hack.hahwul.com/support/troubleshooting/) ## Usage - [Configuration](https://jwt-hack.hahwul.com/usage/configuration/) - [Examples](https://jwt-hack.hahwul.com/usage/examples/) ## Commands - [Crack Command](https://jwt-hack.hahwul.com/usage/commands/crack/) - [Decode Command](https://jwt-hack.hahwul.com/usage/commands/decode/) - [Encode Command](https://jwt-hack.hahwul.com/usage/commands/encode/) - [MCP Server Mode](https://jwt-hack.hahwul.com/usage/commands/mcp/) - [Payload Command](https://jwt-hack.hahwul.com/usage/commands/payload/) - [Scan Command](https://jwt-hack.hahwul.com/usage/commands/scan/) - [Server Command](https://jwt-hack.hahwul.com/usage/commands/server/) - [Verify Command](https://jwt-hack.hahwul.com/usage/commands/verify/)