WebMCP protocol introduced by Microsoft and Google

WebMCP is a protocol created by Microsoft and Google in August 2025 to help websites communicate more effectively with AI agents. It is designed to make it easier for AI systems to perform tasks like searching, adding items to a cart, or submitting forms on websites.

Adoption by major tech companies

WebMCP was first tested in Google Chrome during the spring of 2026 and has since been adopted by major companies such as OpenAI, Shopify, and Cloudflare. It aims to solve issues AI agents face when interacting with websites, like poorly contrasted buttons or complex JavaScript interfaces.

Current support for WebMCP

As of October 2026, only ChatGPT and Codex support WebMCP natively. Chrome and Edge have experimental support, but other AI systems like Claude and Gemini do not yet support the protocol without additional tools.

Recommended use cases for WebMCP

Google advises using WebMCP for specific tools on a website rather than all pages. E-commerce sites, where the entire purchase process can be exposed, are considered a primary use case. Sites with complex forms or large amounts of data also benefit, while personal blogs or well-structured informational sites may not need it.

Enabling WebMCP on different platforms

Shopify automatically enables WebMCP for all its stores, while platforms like Cloudflare and Wix offer easy extensions. Custom websites or those using content management systems without built-in WebMCP support require manual setup, involving the addition of specific attributes or JavaScript code.

Implementing WebMCP with APIs

WebMCP can be implemented using two methods: a declarative API and a JavaScript API. The declarative method is simpler and recommended for most forms, while the JavaScript API is used for more complex functions, requiring registration of each tool with specific parameters and functions.

Using AI to implement WebMCP

AI agents can assist in auditing and implementing WebMCP on websites. Tools like the Ora plugin on GitHub allow users to add the plugin to systems like Claude Code or Codex and use prompts to automatically audit a site and suggest necessary changes. These changes can then be validated and implemented manually.