# Cuelark UI vs Darnly: which to pick

> Cuelark UI vs Darnly: pricing, platforms, launches, upvotes and founders side by side on ProductsFarm, with notes on which to pick.

Canonical: https://productsfarm.com/compare/cuelark-ui-vs-darnly
Last updated: 2026-11-08

|  | [Cuelark UI](https://productsfarm.com/product/cuelark-ui) | [Darnly](https://productsfarm.com/product/darnly) |
| --- | --- | --- |
| What it is | Open-source shadcn/ui components for AI agents | Turns bugs you spot on screen into context your AI coding agent can fix |
| Pricing | Open source | Free |
| Platforms | Web, CLI | Chrome extension, macOS, API, CLI, Web |
| Categories | Developer tools, AI | Developer tools, AI |
| Made for | react developers, frontend engineers, ai product teams | developers, indie hackers, product teams, vibecoders, developers using AI coding agents |
| Built with | [Cloudflare](https://productsfarm.com/tech-stack/cloudflare), [Tailwind CSS](https://productsfarm.com/tech-stack/tailwind-css) | [Astro](https://productsfarm.com/tech-stack/astro), [Cloudflare](https://productsfarm.com/tech-stack/cloudflare) |
| Upvotes | 0 | 0 |
| Website | [ui.cuelark.com](https://ui.cuelark.com/) | [darnly.dev](https://darnly.dev/) |

## About Cuelark UI

Cuelark UI is a free, MIT-licensed shadcn/ui registry of 107 React components, including 29 built for AI agent interfaces: reasoning, tool calls, approvals, file diffs, citations and trace waterfalls. Install any component with the shadcn CLI.

## About Darnly

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.

## Related

- [Cuelark UI](https://productsfarm.com/product/cuelark-ui)
- [Darnly](https://productsfarm.com/product/darnly)
- [More comparisons](https://productsfarm.com/compare)