mcpproxy-go

Overview

MCPProxy is a Go-based desktop application that acts as an intelligent proxy for MCP servers, addressing key limitations of direct MCP connections. It enables users to federate hundreds of MCP servers while bypassing tool limits imposed by platforms like Cursor and OpenAI. The proxy provides significant token savings by loading only one 'retrieve_tools' function instead of hundreds of schemas, with research showing approximately 99% token reduction and 43% accuracy improvement. Additionally, it includes security features like automatic quarantine to block Tool Poisoning Attacks until manual approval of new servers.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• retrieve_tools

  Retrieve a limited set of tools from the proxy based on relevance and usage patterns

  Try:Show me available tools for project managementTry:What tools can help me analyze code?Try:Retrieve tools for working with databases

Note: MCPProxy acts as a proxy that exposes a limited 'retrieve_tools' function to clients rather than exposing the full set of tools from upstream servers directly. The actual tools available depend on the configuration of upstream servers.

Comparable tools

Installation

# macOS (Homebrew)
brew install smart-mcp-proxy/mcpproxy/mcpproxy

# Linux (Debian/Ubuntu)
sudo apt update && sudo apt install mcpproxy

# With Go
go install github.com/smart-mcp-proxy/mcpproxy-go/cmd/mcpproxy@latest

{
  "mcpServers": {
    "MCPProxy": {
      "command": "mcpproxy",
      "args": ["serve"]
    }
  }
}

FAQ

How does MCPProxy save tokens?

MCPProxy loads just one 'retrieve_tools' function instead of hundreds of individual tool schemas, reducing token usage by approximately 99% while improving accuracy by 43%.

What security features does MCPProxy provide?

MCPProxy includes automatic quarantine that blocks potentially malicious MCP servers until manual approval, protecting against Tool Poisoning Attacks. It also uses OS-native keyring for secure secrets management.

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