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Click-to-fix UI bug tool for AI coding agents

Build a lightweight browser extension or local dev-server plugin that lets a developer click any visual bug on localhost, automatically captures the DOM context, console errors and a screenshot, and hands it to an AI coding agent that proposes or applies the fix directly in the codebase. Target solo developers and small teams who want to skip writing detailed bug reports and go straight from 'this looks broken' to a pull request.

via Product Hunt
Original post

What to build

A browser extension plus a small local dev-server plugin for solo developers and small teams: click any visual bug on localhost, auto-capture the DOM context, console errors, and a screenshot, then send that bundle to an AI coding agent that proposes a fix or opens a pull request.

Bug reporting is manual and slow; this collapses 'something looks broken' into a captured, AI-ready context packet that can drive an automated code fix.

Demand

Solo developers and small teams who already lean on AI coding agents want to skip writing bug reports by hand, and interest is visible in early public discussion of the concept.

  • Product Hunt: PulseDevDemand

    Product Hunt listing: PulseDev, 'Click any UI bug on localhost and your AI agent fixes it' — discussion page live.

Stack

  • Chrome Extension Manifest V3
  • MutationObserver / DOM snapshot APIs
  • html2canvas or native captureTab screenshot API
  • Vite or Webpack dev-server plugin hook
  • OpenAI or Claude API for fix generation
  • GitHub API for PR creation

Solo + AI difficulty

MVP (click-to-capture DOM, console, screenshot and send to an LLM for a suggested diff) is a 2-3 week build for one person with AI help. The hard part is reliably mapping captured DOM/console output back to real source lines across React/Vue builds and source maps; auto-applying safe fixes or opening clean PRs is a longer, iterative effort.

Entry threshold
Can be built in a few weeks as a browser extension plus a thin orchestration layer on top of existing coding-agent APIs (Claude Code, Cursor, etc.); the real barrier is differentiation, since open-source tools like Stagewise and several AI IDE visual editors already cover this exact click-to-fix workflow.
Window
6-12 months

Where to find first users

  • Product Hunt launch
  • r/webdev and r/reactjs
  • Indie Hackers community
  • Dev-tool Twitter/X and relevant Discord servers (Vite, Next.js)

Counter-signals & risks

  • No historical match and a low score (0.42) suggest weak corroborating evidence that market demand or feasibility has been validated externally.

  • Existing AI coding assistants (Cursor, GitHub Copilot Workspace, Replit Agent) and browser devtools already cover parts of this workflow, raising differentiation risk.

  • Accurately mapping a visual bug to the correct source code location across complex frontend frameworks (React, Vue, build tooling, source maps) is technically hard and may produce unreliable or unsafe automated fixes.

Original title: PulseDev

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Click-to-fix UI bug tool for AI coding agents — Nichr