# 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.