Fiest MCP

Connect Fiest to ChatGPT

Create and test a Fiest MCP app in an eligible ChatGPT workspace.

ChatGPT can use Fiest through a custom MCP app. Custom app creation depends on your ChatGPT plan, workspace settings, and role.

Before you begin

Your workspace must allow custom apps and developer mode. Business and Enterprise/Edu administrators control availability and publishing.

If you cannot see Create in Settings → Apps, ask your workspace administrator to enable custom MCP apps or create Fiest for the workspace.

1. Copy the server address

Use Production for a live Fiest account. Use Sandbox only when Fiest has invited you to test with isolated sample data. The sandbox currently uses the temporary mcp-dev.fiest.io hostname.

Environment
https://mcp.fiest.io/mcp

2. Create the app

  1. Open Settings → Apps → Create. Administrators can also use Workspace settings → Apps → Create.
  2. Name the app Fiest, or Fiest sandbox when using the sandbox.
  3. Paste the Fiest server address as the MCP endpoint.
  4. Choose OAuth authentication.
  5. Select Scan tools.
  6. Complete Fiest sign-in, restaurant or organization selection, and consent when the browser prompt opens.
  7. Finish creating the app.

Fiest advertises refresh access through standard OAuth discovery so supported clients can keep the connection active without asking you to sign in for every session.

3. Check that it worked

Open a new chat and select Fiest from the tools or apps menu. Ask:

Use Fiest to show the restaurant context I authorized.

You are connected when ChatGPT calls get_restaurant_context and shows the restaurant or organization you approved.

Do not share credentials in chat

Fiest authentication happens in the browser window opened by ChatGPT. Never paste a password, one-time code, access token, or authorization code into a ChatGPT conversation.

Publish for a workspace

Administrators can review the draft in Workspace settings → Apps → Drafts and publish it to approved users. Review the available tools and action controls before publishing. New or changed write tools should remain disabled until the workspace has reviewed them.

Troubleshooting

  • Create is missing: developer mode or custom apps are not enabled for your account or workspace.
  • Tool scan asks for authorization: complete the Fiest OAuth flow in the browser, then wait for the scan to finish.
  • The app is not available in chat: select it from the tools menu, or ask an administrator to publish or enable it.
  • Authorization was revoked: reconnect Fiest from the app's settings.

See the official OpenAI guides for developer mode and MCP apps and apps in ChatGPT.

Connect Fiest to Claude

Add Fiest as a custom remote connector in Claude and authorize the connection.

On this page

Before you begin1. Copy the server address2. Create the app3. Check that it workedPublish for a workspaceTroubleshooting