Pinpoint

Lets a coding agent receive UI feedback notes with selectors, styles, component chains and screenshots from a running web page or iOS Simulator app.

What it does

Pinpoint is a local stdio MCP server that connects a coding agent to a running Pinpoint bridge. When you point at an element in a browser page or a native app in the iOS Simulator and describe what should change, the agent receives your comment together with the selector, DOM path, styles, component chain, a source-file hint and a cropped screenshot. If the bridge is not running, the server reads previously saved notes instead.

When to use it

Useful when you want to give a coding agent precise, element-level UI feedback while developing a web app or an iOS Simulator app, instead of describing locations in prose. It suits local front-end and app development workflows where the agent should act on the exact element you clicked.

Requirements

Runs as a local process on the user's machine via npx pinpoint-bridge mcp, so Node.js is needed. The bridge must be set up from the repository, and setup also loads a browser extension that is not part of the npm package. The bridge listens on 127.0.0.1, with its port configurable through the PINPOINT_PORT environment variable (default 7331). Desktop only.