WebMCP, which deepens the integration of AI and websites, now supports ChatGPT for desktop.

The built-in browser in the desktop version of the ChatGPT app now supports WebMCP . This makes it easier to handle information from WebMCP-compatible websites using ChatGPT and Codex.

We're adding support for WebMCP in the ChatGPT desktop app's built-in browser and ChatGPT Sites.

When you visit a compatible website, ChatGPT or Codex can automatically use it to complete your task.

Update to the latest version of the ChatGPT desktop app, then just ask Codex to… pic.twitter.com/XCGXUTRotN

— OpenAI Developers (@OpenAIDevs) August 25, 2026

WebMCP is a standard for instructing AI on how to use features on websites, such as 'purchase products,' 'reserve seats,' and 'search for information.' The built-in browser in the desktop version of the ChatGPT app now supports WebMCP, making it easier for ChatGPT and Codex to perform tasks on WebMCP-compatible sites.

Additionally, the 'ChatGPT Sites' feature, which allows you to build websites using ChatGPT, now supports the creation of WebMCP-compatible sites. Users can create and publish WebMCP-compatible sites simply by instructing ChatGPT to 'build a WebMCP-compatible site with the following functionality.'

OpenAI has published examples of WebMCP-compatible websites at the following link.

Showcase | OpenAI Developers
https://developers.openai.com/showcase?view=webmcp-apps

OpenAI is also hosting the 'WebMCP Challenge,' a contest for WebMCP-compatible websites. The deadline is September 4, 2026 at 5:00 AM JST, and the top 10 entries will receive a prize of $3,000 (approximately 477,000 yen), a one-year license to use ChatGPT Pro, one Codex Micro , original OpenAI merchandise, and additional prizes from Shopify, Google Chrome, Netlify, Cloudflare, Vercel, and Render.

WebMCP Challenge | OpenAI
https://openai.com/webmcp-challenge/