Show HN: Pointa – Point-and-click annotations for AI coding agents (open source) (opens in new tab)

I built Pointa to solve a problem I kept running into: describing UI changes to AI coding tools is tedious. "The button in the top right, no the other one, with the blue border..."

Pointa lets you click on any element in your localhost app, leave a comment, and your AI agent (Cursor, Claude Code, Windsurf, etc.) picks it up via MCP and implements it. You can bulk annotate your entire app, and then get it all worked on in one shot.

How it works: - Chrome extension for point-and-click annotations - Local Node.js server with MCP protocol - All data stays on your machine (~/.pointa)

Built with vanilla JS for the extension and Express for the server. No frameworks, no cloud dependencies.

GitHub: https://github.com/AmElmo/pointa-app

Would love feedback on the architecture and any edge cases I might have missed. I use it every singled day on all my projects, and I want to make it as useful as possible for everyone.