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MCP Proxy

@imandra-ai

Basic information

Category

Other

Transports

stdio

Author

imandra-ai

About MCP Proxy

Proxy for remote MCP servers

MCP Proxy config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-proxy-imandra-ai": {
      "command": "npx",
      "args": [
        "-y",
        "github:imandra-ai/mcp-proxy"
      ]
    }
  }
}

MCP Proxy tools

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Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is mcp-proxy?

mcp-proxy is a basic proxy for remote Model Context Protocol (MCP) servers. It makes the Streamable HTTP transport usable by clients that only support the stdio transport by offering a stdio facade. It is currently specialised to Imandra Universe MCP servers with first-class support for Imandra Universe authentication, but is designed to be easy to generalise.

How to use mcp-proxy?

Recommended usage is via npx (included with npm). Run npx -y github:imandra-ai/mcp-proxy. Configuration is done through environment variables: IMANDRA_API_KEY (your Imandra API key), IMANDRA_MCP_SERVER (server name/ID), and optionally REMOTE_URL (overrides the default remote URL). An example configuration for Cursor/Windsurf is provided in the README.

Key features of mcp-proxy

  • Proxies remote MCP servers to a local stdio interface.
  • Makes Streamable HTTP transport available to stdio-only clients.
  • Provides first-class authentication support for Imandra Universe.
  • Configurable via environment variables.
  • Can be run directly with npx without installation.

Use cases of mcp-proxy

  • Use Imandra Universe MCP servers in any client that supports stdio.
  • Test remote MCP servers locally without modifying the client.
  • Bridge Streamable HTTP servers to older or simpler MCP tools.
  • Develop and debug MCP servers with a locally running proxy.

Frequently asked questions

1

What does mcp-proxy do?

mcp-proxy acts as a bridge, converting between the Streamable HTTP transport and stdio transport, allowing clients that only support stdio to use remote MCP servers that speak Streamable HTTP.

2

How do I configure mcp-proxy?

Configuration is through environment variables: `IMANDRA_API_KEY` (your Imandra API key), `IMANDRA_MCP_SERVER` (the server name ID), and optionally `REMOTE_URL` (to use a custom remote MCP server URL). These are typically set in an `env` field in your MCP server configuration file.

3

Is mcp-proxy only for Imandra Universe?

The proxy is currently specialised for Imandra Universe MCP servers with first-class authentication support, but the README states it would be easy to generalise to other remote MCP servers.

4

What are the runtime requirements for mcp-proxy?

mcp-proxy requires Node.js with `npm` (which provides `npx`). It can be run on demand using `npx` without a separate installation step.

5

Can I use mcp-proxy with my own remote MCP server?

Yes. Set the `REMOTE_URL` environment variable to the URL of your remote MCP server, and the proxy will use that URL instead of the default Imandra Universe endpoint.

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