by openai · MCP Server · ★ 238
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is tunnel-client safe to install? View the security audit →
Secure MCP Tunnel client is the customer-run agent behind Secure MCP Tunnel. It connects a private or localhost MCP (Model Context Protocol) server to ChatGPT, Codex, the Responses API, and AgentKit through an OpenAI-hosted MCP tunnel endpoint, while keeping the MCP server off the public internet. Use it when: You have an MCP server on a laptop, VM, Kubernetes cluster, or private network and need an OpenAI-hosted product to reach it. Security will not approve a new inbound firewall rule or public endpoint for the MCP server. You want an operator-visible daemon with , , , and before a connector or API call depends on it. If you searched for "secure MCP tunnel", "MCP tunnel ChatGPT", "connect local MCP server to ChatGPT", "connect local MCP server to Codex", "localhost to ChatGPT", or "Codex local MCP", start with , then read the onboarding guide below. Start Here Need the shortest working path from localhost or a private MCP server to ChatGPT or Codex? Start with . Need the customer-shareable network and trust-boundary story? Read . Need roles, groups, tunnel IDs, or API keys? Read . Need Docker, Kubernetes, or VM deployment guidance? Read . Need to
| Stars | 238 |
| Forks | 45 |
| Language | Go |
| Category | MCP Server |
| License | Apache-2.0 |
| Quality Score | 64.9019590098854/100 |
| Open Issues | 5 |
| Last Updated | 2026-08-09 |
| Created | 2025-12-10 |
| Platforms | cli, codex, go, mcp |
| Est. Tokens | ~19k |
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tunnel-client is Customer-run client for Secure MCP Tunnel: connect private or localhost MCP servers to ChatGPT, Codex, the Responses API, and AgentKit without exposing them to the public internet.. It is categorized as a MCP Server with 238 GitHub stars.
tunnel-client is primarily written in Go. It covers topics such as agentic, agentic-ai, agentic-workflow.
You can find installation instructions and usage details in the tunnel-client GitHub repository at github.com/openai/tunnel-client. The project has 238 stars and 45 forks, indicating an active community.
tunnel-client is released under the Apache-2.0 license, making it free to use and modify according to the license terms.
The top alternatives to tunnel-client on Agent Skills Hub include hasmcp-ce, arcade-mcp, chatgpt-cli. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.