Connect ChatGPT

You can connect OpenPost's remote MCP server in ChatGPT developer mode. Your account and workspace policy determine whether developer mode and custom connections are available. Start with read access to check the connection, then grant write access if you want ChatGPT to prepare or publish content.

Add OpenPost

1. In ChatGPT, open Settings → Security and login and turn on Developer mode if your workspace allows it.
2. Open ChatGPT Plugins and select the plus button. Name the connection OpenPost.
3. Enter https://app.openpo.st/mcp as the remote MCP URL. Create the connection and review the tools it discovers.
4. Complete OpenPost sign-in when prompted. Choose a workspace and mcp:read for review-only work, or mcp:full when ChatGPT needs to create, schedule, or publish.
5. Start a new chat and add OpenPost from the tools menu.

Ask, "List my OpenPost workspaces," then name one and ask, "Review this week's scheduled publications without changing anything." For a first write, ask for an unpublished draft and inspect it in OpenPost. ChatGPT may ask you to confirm write actions. Check the account, text, and time before accepting a publish or schedule action.

If your server is private

ChatGPT web cannot reach your laptop's localhost or a private LAN address directly. Use a public HTTPS OpenPost URL or OpenAI's Secure MCP Tunnel for a private server. The local openpost-mcp bridge is for desktop MCP clients, not a direct ChatGPT web connection.

If the connection loses access, reopen it in ChatGPT Plugins and sign in again. If OpenPost's tool list changed, refresh the connection's metadata and start a new chat. An administrator may control access to connections and write tools in a managed workspace.

See OpenAI's developer-mode connection guide for current ChatGPT controls.