mcp-combiner

An MCP aggregator — fronts multiple MCP servers behind a single Streamable HTTP endpoint, so one connection exposes every backend server's tools. Built on FastMCP. Shareable across clients (via sharedserver), it powers the mcp-companion Neovim plugin and the mcp-combiner Claude Code plugin, and works standalone with any MCP client.

PyPI package · command · import package: mcp-combiner / mcp-combiner / mcp_combiner.

⚠️ Renamed from mcp-bridge. If you ran an earlier build:

  • command/import are now mcp-combiner / mcp_combiner; reinstall: uv tool uninstall mcp-bridge then uv tool install … (see Install below).
  • config env vars MCP_BRIDGE_* → MCP_COMBINER_* (and MCP_COMPANION_COMBINER_URL → MCP_COMPANION_COMBINER_URL).
  • OAuth token storage moved to ~/.cache/mcp-combiner/ — you'll re-authenticate each MCP server once (old tokens under ~/.cache/mcp-companion/ are no longer read).

Install

Needs only uv — uvx fetches and runs it, no venv to manage:

uvx mcp-combiner --help                                                # once published to PyPI
# before PyPI (or to track main) — the package lives in the combiner/ subdirectory:
uvx --from "git+https://github.com/georgeharker/mcp-companion#subdirectory=combiner" mcp-combiner

Or install it: uv pip install mcp-combiner (PyPI), or from the repo subdir uv pip install "git+https://github.com/georgeharker/mcp-companion#subdirectory=combiner".

Usage

mcp-combiner --config /path/to/servers.json --port 9741

Development

uv sync
pytest

Project links

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  • Released:
Newer release available (0.13.4)

1 maintainer

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Avatar for georgeharker from gravatar.com georgeharker

Credits

Author: George Harker

GitHub Statistics

Data verified by PyPI on Aug 17, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
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Requires

Python >=3.12

Tags

aggregator fastmcp mcp neovim proxy

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