mcp-proxy

A standalone binary for connecting STDIO based MCP clients to HTTP (SSE) based MCP servers.

Note: the proxy supports both SSE according to the2024-11-05as well as streamable HTTP according to the2025-03-26specification. It may happen though that the connecting client doesnotsupport the version sent by the server.

The latest releases are available on thereleases page.

curl -sL https://github.com/tidewave-ai/mcp_proxy_rust/releases/latest/download/mcp-proxy-aarch64-apple-darwin.tar.gz | tar xv

curl -sL https://github.com/tidewave-ai/mcp_proxy_rust/releases/latest/download/mcp-proxy-x86_64-apple-darwin.tar.gz | tar xv

xattr -d com.apple.quarantine /path/to/mcp-proxy

You can download the latest release from theReleases pageor with one command, depending on your architecture:

curl -sL https://github.com/tidewave-ai/mcp_proxy_rust/releases/latest/download/mcp-proxy-x86_64-unknown-linux-musl.tar.gz | tar zxv

curl -sL https://github.com/tidewave-ai/mcp_proxy_rust/releases/latest/download/mcp-proxy-aarch64-unknown-linux-musl.tar.gz | tar zxv

You can download the latest release from theReleases pageor with the following Powershell command:

curl.exe -L -o mcp-proxy.zip https://github.com/tidewave-ai/mcp_proxy_rust/releases/latest/download/mcp-proxy-x86_64-pc-windows-msvc.zip; Expand-Archive -Path mcp-proxy.zip -DestinationPath .

{ "mcpServers": { "my-server": { "command": "/path/to/mcp-proxy", "args": ["http://localhost:4000/tidewave/mcp"] } } }

{ "mcpServers": { "my-server": { "command": "c:\\path\\to\\mcp-proxy.exe", "args": ["http://localhost:4000/tidewave/mcp"] } } }

mcp-proxyeither accepts the SSE URL as argument or using the environment variableSSE_URL. For debugging purposes, you can also pass--debug, which will log debug messages on stderr.

- --max-disconnected-timethe maximum amount of time for trying to reconnect while disconnected. When not set, defaults to infinity.
- --override-protocol-versionto override the protocol version reported by the proxy. This is useful when using the proxy with a client that expects a different protocol version, when the only reason for mismatching protocols is the use of streamable / SSE transports.

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