tunnel-client MCP server
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.
What tunnel-client does
Summarised from the project README; check the repository for the latest details.
Features
- The client long-polls the OpenAI tunnel control plane over HTTPS:
- `GET /v1/tunnels/{tunnelid}/poll`
- `POST /v1/tunnels/{tunnelid}/response`
- Older tunnel-client releases may still use the singular `/v1/tunnel/...`
- Control-plane requests include `User-Agent: oai-tunnel-client/` for
- Control-plane HTTPS requests can present a separate client certificate/key
Repository: openai/tunnel-client
Stars: ★567
Language: Go
Last updated: 2026-10-15
agenticagentic-aiagentic-workflowchatgptclicodexgolangmcpmcp-clientmcp-gatewaymcp-protocolmcp-servermcp-serversmcp-toolsmodel-context-protocolopenairesponses-apisecure-mcp-gatewaysecure-mcp-tunnel
Stars: ★567
Language: Go
Last updated: 2026-10-15
agenticagentic-aiagentic-workflowchatgptclicodexgolangmcpmcp-clientmcp-gatewaymcp-protocolmcp-servermcp-serversmcp-toolsmodel-context-protocolopenairesponses-apisecure-mcp-gatewaysecure-mcp-tunnel
How to install tunnel-client
No install config was found in this README. See the repository for setup steps, then follow our guides for Claude Desktop, Cursor or VS Code.
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