Sign in to Sinatra's MCP server from ChatGPT
On ChatGPT Business, Enterprise and Edu workspaces, ChatGPT now connects to Sinatra's MCP server as a plugin when you sign in with your Sinatra account, so you can start and follow tasks from a chat.
Starting a task needs a custom MCP server with write actions, which OpenAI offers on ChatGPT Business, Enterprise and Edu workspaces, on the web. On Business, an admin or owner adds it. ChatGPT Pro can connect custom MCP servers for reading only, so it can't start a task. Add Sinatra as a custom MCP server from ChatGPT's Plugins page, choose OAuth, and approve ChatGPT on the Sinatra page that opens; the CLI, MCP and API docs walk through it. ChatGPT proves who it is with a signed key when it signs in, which Sinatra's sign-in didn't accept until now. Deleting the plugin in ChatGPT doesn't end Sinatra's access on its own: Disconnect it on the CLI & API page too.
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