OpenAI has formally introduced the ChatGPT Developer Mode feature (currently in Beta), accessible exclusively via the web version for Plus and Pro subscribers. Built on the MCP protocol, this innovative feature facilitates a comprehensive model context protocol client, propelling ChatGPT's evolution from a mere conversational tool to a sophisticated automated agent. It facilitates seamless bidirectional interaction with external tools, enabling the reading and writing of external data, and grants users the ability to craft custom connectors for operating external systems. This feature seamlessly integrates with any MCP-compatible server and is fortified with a robust, multi-tiered security protection mechanism. OpenAI officially advises users to conduct tests in a controlled, isolated environment and intends to expand this feature's availability to additional subscription plans while enhancing its support for the desktop version. The introduction of this feature not only cements OpenAI's preeminent position in the AI agent ecosystem but also expedites the deployment of enterprise-level AI integration applications. It stands as a pivotal milestone in the progression of conversational AI towards automated agents and has the potential to revolutionize traditional business process management methodologies.