OpenAI adopts MCP across its products, starting with the Agents SDK
OpenAI CEO Sam Altman announced support for the Model Context Protocol across OpenAI products: available in the Agents SDK the same day, with ChatGPT desktop app and Responses API support to follow. The move put both major AI labs behind the same integration standard.
On March 26, 2025, four months after the protocol's release, OpenAI announced it would support the Model Context Protocol across its products. CEO Sam Altman said support was available that day in the Agents SDK, with the ChatGPT desktop app and the Responses API to follow. Anthropic chief product officer Mike Krieger publicly welcomed the move.
The announcement mattered structurally: the protocol's largest potential competitor adopted it instead of shipping an alternative, putting both major AI labs behind a single integration standard. OpenAI's Agents SDK documentation now covers connecting agents to MCP servers over stdio and Streamable HTTP, plus hosted MCP server tools invoked directly by the Responses API.
The announcement landed the same day as the MCP 2025-03-26 revision, which brought the Streamable HTTP transport and OAuth 2.1 authorization.
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- TechCrunch (2025-03-26) - reports Sam Altman's announcement that OpenAI will add MCP support across its products, available that day in the Agents SDK with ChatGPT desktop and Responses API coming - accessed
- OpenAI Agents SDK documentation - MCP support with stdio, Streamable HTTP, and hosted MCP server tools via the Responses API - accessed