Self-hosted MCP proxy and aggregation platform. Register multiple upstream MCP servers and expose them through a single unified endpoint with namespace routing, multi-transport support (HTTP/SSE, stdio, OpenAPI→MCP), per-tool overrides, and a web admin UI.
mcp-aggregator is a single MCP server that fans out to multiple backend MCP servers and re-exposes all their tools through one streamable-HTTP endpoint, with namespacing to avoid collisions, per-backend isolation for fault tolerance, and a REST side-channel for live health and tool catalogs.