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ChatGPT plugin

ChatGPT
▾

Bring your Flow tools and skills into ChatGPT.

ChatGPT can use your product through MCP or through a plugin that bundles skills and an MCP connection. Flow generates the portable Agent Plugins package; publishing remains a host workflow.

Connect and package

Section titled “Connect and package”

Make the server reachable

Deploy your MCP server or host it yourself behind public HTTPS. Configure OAuth for account-protected tools.

Test the MCP connection

Use ChatGPT’s Add custom MCP server flow with your /mcp URL. Try a tool request and, when required, sign in.

Use the official connection guide for account and workspace requirements.

Generate the plugin

Terminal
npx @flow-engineer/flow plugin --server https://agent.example.com/mcp --out plugins
npx @flow-engineer/flow check --plugin plugins

Use plugins/agent-plugins/. It contains plugin.json, mcp.json and skills/.

Install or publish

Section titled “Install or publish”

Follow OpenAI’s packaging guide to add OpenAI-specific metadata and distribute the package through a supported development source or the public submission process. Generating a folder does not register or publish it.

The bundled MCP URL ends in /mcp/plugin so ChatGPT receives the skills from the package once. Check it worked: start a new chat, invoke the installed plugin and verify a skill-backed tool call.