OpenAI has added a beta of Developer mode to ChatGPT, enabling full read and write support for MCP (Model Context Protocol) tools, though the documentation describes the feature as dangerous.

Developer community lead Edwin Arbus said that "in developer mode, developers can create connectors and use them in chat for write actions (not just search/fetch). Update Jira tickets, trigger Zapier workflows or combine connectors for complex automations." Limitations in the initial beta are that developer mode does not work in Team workspaces or in project chats.

Arbus demonstrated how the feature could link ChatGPT to Stripe so that the AI can raise invoices and send them in response to a prompt. There is a Confirm button before an action is taken but this can be disabled for a trusted MCP server

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