ToolRouter is a hosted MCP gateway. One catalog of tools for Claude, ChatGPT, and Grok. This page is a short map of the runtime path — not a full systems design dump.
Runtime path
- Registry — tools and skills register into one catalog the gateway can list and call.
- Gateway — MCP (stdio + HTTP), REST, and CLI dispatch into the registry with auth, billing, and assets.
- Billing — free tools stay free; paid calls settle when a paid tool works. Optional Lite, Plus, and team seats.
- Assets — generated files and media land in the asset store and return as URLs.
- Knowledge — optional per-tool RAG for tools that ship markdown knowledge bases.
For product orientation, read Overview. For MCP, REST, auth, rate limits, and asset delivery, read Integration. For building a tool, read Building Tools.