At Build 2026 last week, we announced the public preview of built-in MCP for Azure App Service. It does one thing, and it does it with almost no effort on your part: it turns a REST API you already host on App Service into a Model Context Protocol (MCP) server, so AI agents and assistants can call your API as a set of tools. No MCP code to write. No second service to deploy. What it does You give App Service an OpenAPI 3.x specification (JSON or YAML) describing the operations you want to exp...

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