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open-mcp-auth-proxy
Authentication and Authorization Proxy for MCP Servers
90stars
23forks
Go
authorizationmcpoauth
Quality signals
StaleNo testsNo CIThin docsNo licenseNew
AI summary
Auto-generated overview of what this skill does and when to reach for it.
A lightweight proxy that adds authentication and authorization to MCP servers without modifying their code.
Use this when
- You need to add auth to an existing MCP server without rewriting it
- Your MCP server lacks built-in user management
- You want to enforce rate limits per user on MCP calls
- You need to integrate MCP with your existing auth system (OAuth, JWT, etc.)
- Your MCP server runs in a shared environment with untrusted clients
Don't use when
- You’re building a single-user MCP server with no auth needs
- Your MCP server already has full auth built-in
- You need to proxy non-MCP protocols (e.g., HTTP APIs)
Capabilities
- Forwards MCP requests only after validating user credentials
- Supports JWT, OAuth2, and API key authentication methods
- Enforces rate limits per user or client
- Logs all MCP requests with user context
- Routes requests to the correct MCP server based on auth tokens
- Adds minimal latency (<10ms) to MCP calls
InstallMCPInstall as a Claude Code skill
Universal installANY TOOL
$ npx skillcity@latest wso2-attic/open-mcp-auth-proxyAuto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.
Requires Node.js 18+ (ships with npx).
Or install manually
# Install into ~/.claude/skills/ mkdir -p ~/.claude/skills/open-mcp-auth-proxy curl -fsSL https://raw.githubusercontent.com/wso2-attic/open-mcp-auth-proxy/main/README.md -o ~/.claude/skills/open-mcp-auth-proxy/SKILL.md
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