FeatureSep 11, 2026

Enable Model Context Protocol (MCP)

Enable Model Context Protocol (MCP)

You can now configure API Gateway to act as a remote Model Context Protocol (MCP) server. This Public Preview feature allows you to expose your existing REST APIs to AI agents as tools, without requiring changes to your backend services. You can enable MCP by annotating your OpenAPI 3.x specification using custom Google extensions.

For more information, see Model Context Protocol overview and Configure Model Context Protocol.

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All API Gateway updates →

Authenticate MCP tool discovery with an API key
API key authentication is now supported for the Model Context Protocol (MCP) tools/list method. You can name an API key security scheme in tools-list.security, in addition to a JWT security scheme.
API GatewayFeatureSep 30, 2026
Configure streaming for LLM responses and other traffic
You can now create API Gateway gateways that stream requests and responses instead of buffering them.
API GatewayFeature

Enable Model Context Protocol (MCP)

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Enable Model Context Protocol (MCP)

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