# Catalogue

> Public catalogue components.

JSON: https://leyline.ahensya.com/api/v1/components

- [Playwright](https://leyline.ahensya.com/components/playwright.md): Browser automation for tests and agents. Use the browser slice without taking the whole test-runner product box.
- [REA](https://leyline.ahensya.com/components/rea.md): README tagline: "One MCP for reverse engineering across binaries, applications, and runtime behavior." The agent calls REA through MCP to inspect a local target and trace relevant code; REA returns findings with their evidence, and the agent uses them to explain the behavior or write and test an implementation.
- [kogiQA MCP Web Browser](https://leyline.ahensya.com/components/kogiqa-mcp-web-browser.md): A Model Context Protocol server that gives LLM agents selector-free browser automation for debugging, documenting, and testing web applications through natural-language instructions.