smart-mcp-proxy/mcpproxy-go

Overview

A Go-based proxy server that sits between AI agents and MCP (Model Context Protocol) tools, enforcing access control, rate limiting, and audit logging. It intercepts tool calls to prevent unsafe operations and provides a unified security layer for multi-tool agent deployments.

Best for

Best for
Developers deploying AI agents that need a simple, auditable security layer over MCP tools.

Use cases

• Secure an AI agent's access to sensitive MCP tools with role-based permissions
• Monitor and log all tool invocations for compliance or debugging
• Throttle agent requests to prevent abuse or cost overruns

How to use

Install

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

Tools exposed

• trailing-whitespace
• end-of-file-fixer
• check-merge-conflict
• swagger-verify
• go-build

Tested with

Cursor, Claude Desktop, VS Code, ChatGPT

Example client config

{\n  "listen": "127.0.0.1:8080",\n  "mcpServers": [\n    { "name": "local-python", "command": "python", "args": ["-m", "my_server"], "protocol": "stdio", "enabled": true },\n    { "name": "remote-http", "url": "http://localhost:3001", "protocol": "http", "enabled": true }\n  ]\n}

Notes

A Go-based proxy server that sits between AI agents and MCP (Model Context Protocol) tools, enforcing access control, rate limiting, and audit logging. It intercepts tool calls to prevent unsafe operations and provides a unified security layer for multi-tool agent deployments.

239 stars on GitHub. Last updated 2026-06-01. Licensed MIT.

Use cases

• Secure an AI agent’s access to sensitive MCP tools with role-based permissions
• Monitor and log all tool invocations for compliance or debugging
• Throttle agent requests to prevent abuse or cost overruns

Pros

• Lightweight Go binary with minimal dependencies
• Adds security guardrails without modifying agent or tool code
• Open source with active community (239 stars)

Cons

• Requires running and maintaining a separate proxy service
• Limited to MCP protocol tools, not general API proxies
• Documentation may be sparse for advanced configurations

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.