# Darnly

> Turns bugs you spot on screen into context your AI coding agent can fix

Canonical: https://productsfarm.com/product/darnly
Last updated: 2026-11-08

Darnly is a Chrome extension and a Mac app that capture bugs you see while using or testing an app and pass them to an AI coding agent. You press a key, click the broken part and write one line on what you expected. Darnly records a screenshot with the element boxed in red, the element's selector and styles, the file and component that drew it on your local project, the steps you took, and console errors and failed requests from the last 60 seconds. The site says this works with Claude Code, Codex, Cursor, Windsurf, Antigravity, Lovable, Bolt and v0.

The agent works through the list of captured bugs with a /darnly command, either from a folder in your project or from a Darnly cloud inbox reached through an MCP server. Each bug is fixed or the agent asks a short question in its own chat, and the Darnly panel reports what changed so you can check it in the browser. Capturing a bug makes no AI calls, so you can keep testing while your agent's usage limit resets. Passwords, card numbers, tokens, API keys and cookies are replaced with [hidden] before anything is saved.

It is for developers and small teams who build web apps on localhost or live sites, and for people building native Mac, iOS Simulator and Android Emulator apps with an AI coding agent. The Chrome extension and the Mac app are free, and the site lists no paid plan.

## Facts

- Website: https://darnly.dev/
- Categories: [Developer tools](https://productsfarm.com/c/developer-tools), [AI](https://productsfarm.com/c/ai)
- Pricing: Free
- Platforms: Chrome extension, macOS, API, CLI, Web
- Made for: developers, indie hackers, product teams, vibecoders, developers using AI coding agents
- Alternative to: Marker.io, BugHerd, Jam, TraceBug, Chrome DevTools MCP
- Built with: [Astro](https://productsfarm.com/tech-stack/astro), [Cloudflare](https://productsfarm.com/tech-stack/cloudflare)
- Made by: [darnly](https://productsfarm.com/u/darnly)
- Elsewhere: [GitHub](https://github.com/maruthiram08/darnly.dev), [X](https://x.com/darnlyhq)

## On ProductsFarm

- Launched in Week 53 · Dec 28, 2026–Jan 3, 2027