# Catalogue

> Public catalogue components.

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

- [Model Context Protocol](https://leyline.ahensya.com/components/model-context-protocol.md): Open protocol so tools, data, and prompts plug into many harnesses. The connect slice Leyline ranks, not a marketplace.
- [MCP / AI Gateway](https://leyline.ahensya.com/components/mcp-ai-gateway.md): Gateway layer that routes model calls, discovers MCP tools, and applies identity, policy, and spend controls before invocations.
- [BlockRun](https://leyline.ahensya.com/components/blockrun.md): Provides model and service access through documented APIs, SDKs and MCP tools.
- [Invisible Playwright MCP](https://leyline.ahensya.com/components/invisible-playwright-mcp.md): A locally run MCP browser agent and optional web UI that automates a stealth Firefox browser for web browsing, scraping, and page interaction.
- [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.