Pinpoint：点击页面元素并说明改动，Cursor 即可获得上下文

原文标题：Pinpoint: click the element, say what should change, and Cursor gets the context

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作者因厌倦粘贴截图和用文字描述“左边第三个按钮”，开发了 Pinpoint，一个本地 MCP server 加 Chrome 扩展。在开发站点点击元素并输入要改的内容后，Cursor 会收到评论以及选择器、DOM 路径、计算样式、React/Vue 组件链、源文件提示和该元素的裁剪截图。

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2026 年10 月 2 日 23:16 1

I got tired of pasting screenshots and writing “the third button on the left”, so I built Pinpoint: a local MCP server plus a Chrome extension. Click an element on your dev site, type what should change, and Cursor gets your comment with the selector, DOM path, computed styles, React/Vue component chain, source-file hint and a cropped screenshot of just that element.

What’s new:

Native iOS apps: click an element in the iOS Simulator (SwiftUI, UIKit, React Native, Flutter); nothing is added to your app.
Notes can be about behaviour, not only styling: “disable this until the form is valid” sends the agent into the handlers, state and API calls, not just the CSS.
Setup writes .cursor/mcp.json for you: git clone, then node pinpoint/bridge/cli.js setup.

It runs only on 127.0.0.1 and is MIT licensed. Feedback is very welcome, especially on how it does with your codebase.