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Show HN: 1Code – Open-source Cursor-like UI for Claude Code

49 pointsby Bunaslast Thursday at 7:20 PM25 commentsview on HN

Hi, we're Sergey and Serafim. We've been building dev tools at 21st.dev and recently open-sourced 1Code (https://1code.dev), a local UI for Claude Code.

Here's a video of the product: https://www.youtube.com/watch?v=Sgk9Z-nAjC0

Claude Code has been our go-to for 4 months. When Opus 4.5 dropped, parallel agents stopped needing so much babysitting. We started trusting it with more: building features end to end, adding tests, refactors. Stuff you'd normally hand off to a developer. We started running 3-4 at once. Then the CLI became annoying: too many terminals, hard to track what's where, diffs scattered everywhere.

So we built 1Code.dev, an app to run your Claude Code agents in parallel that works on Mac and Web. On Mac: run locally, with or without worktrees. On Web: run in remote sandboxes with live previews of your app, mobile included, so you can check on agents from anywhere. Running multiple Claude Codes in parallel dramatically sped up how we build features.

What’s next: Bug bot for identifying issues based on your changes; QA Agent, that checks that new features don't break anything; Adding OpenCode, Codex, other models and coding agents. API for starting Claude Codes in remote sandboxes.

Try it out! We're open-source, so you can just bun build it. If you want something hosted, Pro ($20/mo) gives you web with live browser previews hosted on remote sandboxes. We’re also working on API access for running Claude Code sessions programmatically.

We'd love to hear your feedback!


Comments

pvtmerttoday at 12:12 AM

i would 100% pay for non-electron/non-vscode ui (sublime text? anyone?)

nothing specifically against vscode/electron/atom. i did use atom 10 years ago, then started sublime text 2, since then, it has been really hard to beat sublime text. the speed and rendering of sublime is much better.

i also have been using zed, which can be considered cloud-code ui too in certain terms, zed is quite more resource-intensive than the sublime and feels higher latency. (possibly because I use frosty-transparent theme...)

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denysvitaliyesterday at 6:05 PM

The idea is nice, but the pricing is odd. 20$/month (the cost of Claude Pro) just for a web interface and a sandbox seems very expensive.

I hope the business model works out for you, but I doubt the price is justified.

Also a better link is: https://1code.dev/

The repo doesn't have screenshots, so you might loose traffic just because of that.

Nevertheless, I'll try it out - looks nice!

show 1 reply
pokot0yesterday at 8:57 PM

fyi: it does not build for me from the source code.

Rebuild Failed

An unhandled error occurred inside electron-rebuild node-gyp failed to rebuild '[...]/1code/node_modules/node-pty'

Error: node-gyp failed to rebuild '[...]/1code/node_modules/node-pty' at ChildProcess.<anonymous> ([...]/1code/node_modules/@electron/rebuild/lib/module-type/node-gyp/node-gyp.js:121:24) at ChildProcess.emit (node:events:508:28) at ChildProcess._handle.onexit (node:internal/child_process:294:12) node:child_process:1000 throw err; ^

jemmywyesterday at 10:59 PM

Could you fix your video to not zoom in and out constantly like that? It's pretty hard to tell what's going on when it zooms right in every time you click something, and it's so fast it actually gave me a bit of motion sickness.

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ahamptyesterday at 6:16 PM

With Claude Code now available in the Claude desktop app, what are the key differentiators?

I’m all for new, better tools and will probably test this out over the weekend to see if the interface is more usable than Claude’s. Just curious if there’s anything you’re particularly excited about compared to the official release.

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c0wb0yc0d3ryesterday at 7:10 PM

I’m happy to see another project monetizing built executables. I feel like it’s not a popular option to many, but to me I think it’s the best way to getting financial support from enterprises that would be more than happy to leech.

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rishabhpoddaryesterday at 6:10 PM

I didn't quite understand what "Unlimited web & macOS apps access" means in the paid tier. Could you elaborate?

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forgotpwd16yesterday at 6:38 PM

>Do I need a Claude subscription?

>Yes, 1Code works with your Claude Pro or Max subscription. Sign in with your Anthropic account and use your existing subscription. We charge separately for the 1Code app.

Is this even after the recent events; Anthropic banning 3rd-party access to the Claude Pro/Max subscriptions and only allowing API access? Tool is nice but most certainly not* 800$ nice.

*Based on heavy Claude Max users here, the people that will be running 3-4 agents, saying API would've cost them $1k+.

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cambooyesterday at 9:31 PM

I hate to be that guy, but if anyone got excited about an interface where they could work with Claude, I'd say stick with the cli.

If you really want a 'different' UI thats unlike VSCode or Cursor already, I'd genuinely recommend checking out almost any other tool that pairs with CC.

quentindanjouyesterday at 9:23 PM

The pricing is ridiculous. It doesn't include the Claude subscription so $20/m is way out of league for a UI.

And a "max" subscription for $200/m??? It makes no sense. It's not because LLM making companies have plans at $200 that any company should make a $200/m plan.

twostorytoweryesterday at 6:14 PM

"Claude Code, but usable" might not be the best tagline. I find Claude Code extremely usable. In fact, it's the simplest product that "just works" I've ever used.

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hmokiguessyesterday at 9:52 PM

> Mom I want 1Code

> Stop crying son, we have 1Code at home

> Shows tmux

SerafimKorablevlast Thursday at 7:24 PM

[dead]

kchumachkovlast Thursday at 7:51 PM

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danialtoplast Thursday at 8:02 PM

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bfleschyesterday at 6:21 PM

[flagged]