{"data":{"slug":"openai-tunnel","name":"OpenAI Tunnel Client","tagline":"Apache customer daemon for Secure MCP Tunnel to ChatGPT/Codex","category":"agents","categoryName":"AI Agents","url":"https://github.com/openai/tunnel-client","github":"https://github.com/openai/tunnel-client","pricing":"open-source","hook":"tunnel-client is OpenAI’s customer-run daemon for Secure MCP Tunnel: expose a private/localhost MCP server to ChatGPT, Codex, Responses API, and AgentKit without putting that MCP on the public internet.","whatsGood":"Apache-2.0 (openai/tunnel-client). Operator surfaces (/healthz, /readyz, /metrics, /ui), onboarding docs in-tree, active 2026-09 pushes. Use when security will not allow inbound firewall holes for MCP.","theCatch":"Vs mcp-remote / SuperGateway: this is OpenAI’s hosted-tunnel customer agent for OpenAI products, not a generic stdio↔SSE bridge. Usefulness depends on OpenAI Secure MCP Tunnel availability/account entitlements — the client alone does not replace a self-host MCP gateway.","verdict":"Apache OpenAI tunnel client when private MCP must reach ChatGPT/Codex without a public endpoint — skip if you are not on that OpenAI path.","addedAt":"2026-09-25","featured":false,"domain":"AI Agents","subSpecialty":"Agents","subcategory":"Coding Agents","tags":["mcp","api","self-host","permissive","coding-agents","active"],"capabilities":["mcp","api"],"surfaces":["MCP","API","Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"Apache-2.0","githubStars":579,"starsPerWeek":13,"access":"free","archived":false,"repo":{"createdAt":"2025-12-10","pushedAt":"2026-10-19","license":"Apache-2.0","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"claude-code","name":"Claude Code","tagline":"Terminal-first coding agent with deep repository context"},{"slug":"cursor","name":"Cursor","tagline":"The AI-first code editor that understands your codebase"},{"slug":"devin","name":"Devin","tagline":"Autonomous AI engineer for defined engineering tasks"},{"slug":"stagehand","name":"Stagehand","tagline":"AI-native browser automation that mixes code and natural language"},{"slug":"browser-use","name":"Browser Use","tagline":"Open-source framework for LLM-driven browser agents"}],"links":{"self":"/api/gems/openai-tunnel","html":"/gems/openai-tunnel","markdown":"/gems/openai-tunnel.md","category":"/api/gems?category=agents","categoryPage":"/stacks/agents"}}