Connecting Codex and ChatGPT Desktop

All three read the same configuration, so you set it up once. Codex needs a paid ChatGPT plan (Plus, Pro, Business, Edu or Enterprise) or an OpenAI API key with billing.

Before you start

• The AI Connections add-on on the store.
• Owner, organization admin, or a role with AI Connections → Connect.

Steps

What happens next

• The assistant appears under Active connections on Configurations → MCP, with its name, who connected it, the permissions granted and when its key expires. Start asking questions about your store.

Edge cases

• Without a terminal. In the ChatGPT desktop app go to Settings → MCP servers → Add server. In the IDE extension open the gear menu, then MCP servers → Add server. Choose Streamable HTTP, paste your link, authenticate with OAuth and restart.
• By hand. Edit ~/.codex/config.toml and add a [mcp_servers.fuze-store] section with url = "https://api.fuze-store.com/mcp/store/<your-store-id>". No transport key is needed, and OAuth is the default.
• If login fails, confirm a paid ChatGPT plan or an API key with billing, and that the section header reads exactly [mcp_servers.fuze-store] with valid TOML.
• Sign-in problems. The usual causes are not being signed in to Fuze Store in the browser, the AI Connections add-on being off, or pasting the link for a different store. See Setting Up AI Access.
• Your role limits what you can grant. You can only give permissions your own role holds. A role without AI Connections → Connect is refused at sign-in.
• No client ID is needed for tools that register themselves from the link alone.

Works with

Related guides

• AI Connections Overview
• Which AI Tools Work Where
• Understanding Permissions