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# Websites start handing agents their own interface: WebMCP is a standard candidate for the open web
- URL: https://globalfeed.ai/en/websites-start-handing-agents-their-own-interface-webmcp-is-a-standard-candidate-for-the-open-web/
- Published: 2026-08-31T22:47:00.000Z
- Updated: 2026-08-31T22:47:00.000Z
- Description: Created by Google and Microsoft and developed in a W3C community group, WebMCP lets sites expose tools for agents alongside their human UI. The in-app browser in the ChatGPT desktop app already supports it.
- Author: GlobalFeed Editor
- Tags: openai, webmcp, mcp, open web, x-dkundel, x-OpenAI, dil-en, elle, video

A new answer is maturing to the question of how agents connect to the internet: WebMCP. As Dominik Kundel of OpenAI's developer experience team explains, the idea is simple and the consequences are not: a website publishes tools for agents alongside the interface it offers humans, and the agent discovers those tools as it uses the site. The proposal was created by Google and Microsoft, is being developed as a web standard in a W3C community group, and OpenAI recently added support to the in-app browser in the ChatGPT desktop app.

Here is how it differs from today's approach: with computer use, the agent clicks through a screen designed for people; even with tools like Playwright, the application is still built human-first. WebMCP gives the agent its own interface. A 3D modeling package, for instance, can expose actions that make sense to an agent instead of the hundreds of buttons drawn for a person, and can surface helpful data to the agent without ever showing it in the UI.

As for "why not just use MCP", the answer is discovery. With regular MCP you must know an integration exists, know when it is needed, and set it up; the difference is like a mobile app versus a mobile website. With WebMCP the agent finds the tools the moment it visits the site, with no installation, store or prior knowledge required. It is the model closest to the web's own nature: following a link without knowing in advance what you will find.

Context: this week we covered OpenAI building its plugin store on MCP and Nous opening agent-to-agent messaging. WebMCP is the open-web leg of the same story: if the connection layer standardizes, websites will open the door to agents themselves. Kundel also notes there are a few days left to join the team's WebMCP hackathon.