Add React Chess demo to Awesome WebMCP list

A chess game built with React that exposes WebMCP tools
(get-board-state, make-move, get-possible-moves, restart-game,
promote-pawn) allowing AI agents to play chess via
navigator.modelContext.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: matipojo

AWESOME_WEBMCP.md

@@ -17,6 +17,8 @@ A curated list of awesome WebMCP demos.
   - **Example Prompt:** "I want to book a flight from New York to Los Angeles for two people on next Thursday."
 - [Animal Viewer](https://65s6dw.csb.app/) - A simple codesandbox demo page that shows either a dog or a cat image.
   - **Example Prompt:** "Show me a dog on this page"
+- [React Chess](https://matipojo.github.io/WebMCP-React-Chess) - A chess game that exposes WebMCP tools (`get-board-state`, `make-move`, `get-possible-moves`, `restart-game`, `promote-pawn`) so an AI agent can play chess through `navigator.modelContext`.
+  - **Example Prompt:** "Let's play chess. You play white. Make your opening move."
 - **Moving Beyond Screen Scraping**: A hands-on example of using WebMCP to create an agentic first experience with 10x fewer tokens
   - [Article](https://lnkd.in/daPRAtMX) | [Code](https://lnkd.in/dkZ3Jizn)