Connecting ChatGPT

Connecting ChatGPT

ChatGPT supports custom MCP connectors via OAuth 2.1 with PKCE. FormDesigner publishes discovery metadata — ChatGPT finds the authorization server automatically.

1. Create an OAuth application — see the OAuth application setup guide with the forms scope.
2. Enable Developer Mode in ChatGPT (Settings → Connectors / Apps).
3. Add a custom connector with the MCP server URL: https://mcp.formdesigner.pro/v1/mcp
4. Choose OAuth as the auth method. After creating the connector, ChatGPT shows a redirect URI — add it to your FormDesigner OAuth app (format: https://chatgpt.com/connector/oauth/…).
5. Complete OAuth in the browser on first connection and approve access.

ChatGPT can also use documentation tools (get_form_building_guide, get_form_schema, etc.) when the client does not support MCP resources.