Google Cloud API Gateway now exposes existing REST APIs as MCP tools

Google Cloud API Gateway 推出 MCP 支持，可将现有 REST API 直接暴露为智能体工具

Google Cloud API Gateway enters public preview with native MCP support. Add x-google-api-management.mcp: true to an OpenAPI spec, deploy, and the gateway acts as a remote MCP server—no separate server needed. Existing JWT, API-key auth, and quota policies apply uniformly to both MCP and REST traffic. The tools/list discovery endpoint is unauthenticated by default; the post recommends securing it with JWT in production. Connect any MCP client to the gateway's /mcp path; the ADK example uses McpToolset with StreamableHTTPConnectionParams.