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MCP Proxy

@stephenlacy

Repository

Basic information

Category

Other

License

MIT

Transports

stdio

Author

stephenlacy

About MCP Proxy

Fast rust MCP proxy between stdio and SSE

#proxy#mcp#agents#mcp-server#mcp-client

MCP Proxy config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

MCP Proxy tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is mCP-Proxy?

mcp-proxy is a Rust bidirectional proxy for the Model Context Protocol that supports SSE and Streamable HTTP transports with OAuth authentication. It is designed for developers who need to connect remote MCP servers to local clients or expose local servers remotely.

How to use mCP-Proxy?

Install via cargo install rmcp-proxy or build from source. Run in remote client mode to connect to a remote server and expose it as a local stdio server, or in local server mode to connect to a local stdio server and expose it as a remote server. Transport is auto-detected (URLs with /sse use SSE; others use Streamable HTTP) or can be overridden with --transport.

Key features of mCP-Proxy

  • Multiple transports: SSE and Streamable HTTP
  • Full OAuth authentication with automatic token refresh
  • Bidirectional proxy (remote to local and local to remote)
  • Fast and lightweight, built in Rust

Use cases of mCP-Proxy

  • Use a remote MCP server as a local stdio server in Claude or Cursor
  • Expose a local MCP server over the network via SSE or Streamable HTTP
  • Connect to MCP servers that require OAuth authentication
  • Proxy MCP traffic between different transport types

Frequently asked questions

1

What transports does mcp-proxy support?

SSE (Server-Sent Events) and Streamable HTTP.

2

How does transport detection work?

If the URL contains `/sse`, SSE is used; all other URLs use Streamable HTTP. You can override with the `--transport` flag.

3

How do I clear authentication data?

Use `mcp-proxy reset` or manually delete the `~/.mcp-auth` directory.

4

What runtime does mcp-proxy require?

Rust and Cargo (install via `cargo install rmcp-proxy` or build from source with `cargo build --release`).

5

How can I control logging verbosity?

Set the `RUST_LOG` environment variable (e.g., `RUST_LOG=error` for minimal logging).

Comments

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