Gate — Bring local MCPs and Skills to ChatGPT

Gate is a local MCP reverse proxy that exposes your computer, MCP servers and Agent Skills through a single OAuth-protected endpoint. It lets ChatGPT reach tools running on your own machine from the web app and iOS apps, without moving the underlying services into the cloud.

Use Gate to connect local commands, files, browser automation, custom MCP servers and a trusted Skills catalogue back to your regular ChatGPT conversations.

Installation and usage

Install Gate on macOS, Linux or WSL:

curl -fsSL https://spel.cc/gate.sh | bash

Then run:

gate

See the installation and usage guide, if you want to do it the hard way.

🛠️ Available MCP Tools

💻 Commands

Tool	Description
`run_command`	Execute a shell command with streaming

🔐 Authentication

Tool	Description
`auth_status`	OAuth status: issuer, audience, base_url

📁 File Sharing

Tool	Description
`public_file_share`	Share a file via a public URL
`public_file_list`	List active shares
`public_file_revoke`	Revoke a share

🔌 Configurable MCP subservers

Servers from config/mcp.json are exposed through Gate with namespaced tools. The included example configures Computer Use as computer_use_*.

See more about the MCP implementation and subserver configuration.

🧠 Agent Skills

Gate can expose a trusted local catalogue of Agent Skills through skills_search and skills_read. Skills remain stored on your machine and can be discovered from ChatGPT without being bundled into the gateway or automatically injected into every conversation.

See how to configure the Skills catalogue.

⚠️ Security

run_command executes shell commands without restrictions — use with caution
OAuth tokens are signed with a local RSA key (generated in data/oauth_private_key.pem)
Files shared via public_file_share are accessible without authentication
Command logs contain all input/output — do not expose logs

📝 License

This project is licensed under the MIT License.