
ChatGPT has finally got the full Model Context Protocol (MCP) support in its developer mode. Earlier, MCP integrations were limited to read-only actions like fetching data or performing searches. However, with the recent update, MCP connectors can now perform write actions, allowing developers to modify external systems, trigger workflows, and chain complex automations directly within ChatGPT.
We’ve (finally) added full support for MCP tools in ChatGPT.
— OpenAI Developers (@OpenAIDevs) September 10, 2025
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. pic.twitter.com/1W0rTGGEnu