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

https://github.com/21st-dev/1code
29•Bunas•1d ago
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

denysvitali•2h ago
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!

Bunas•1h ago
Thanks for the feedback!

On pricing: honestly, the paid tier is less about monetization right now and more about signal. People who pay are the ones who really want this to work, and we want to build for them first. It helps us focus.

rishabhpoddar•2h ago
I didn't quite understand what "Unlimited web & macOS apps access" means in the paid tier. Could you elaborate?
Bunas•1h ago
The web version runs Claude Codes in remote sandboxes - we're adding the same to macOS soon.

Beyond that, we're working on API & integrations - connecting Sentry so an agent can automatically open a PR to fix an issue, or triggering Claude Codes directly from @ mentioning in GitHub/Slack/Linear.

twostorytower•2h ago
"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.
Bunas•2h ago
noted, title comes from my cofounder who's not technical, but he loved Cursor, I was convincing Serafim to try Claude Code, but he just couldn't use it. Cause it was a CLI, then I created a first alpha version of this UI for them .... and he loved it! he's now a fan of Claude Code, and that's where reasoning for "useful" coming from
dbbk•1h ago
Yeah, this is a weird angle to go down when you're trying to compete against... the most popular product.
Bunas•51m ago
The tagline might feel off if you're already comfortable with CLI. Though there's definitely an audience for this — my co-founder posted about struggling with CLI and it got 240k views with 400+ replies of people feeling the same: https://x.com/serafimcloud/status/2002304990053085542

Even as a technical person, I remember my transition from Cursor to Claude Code CLI being rough. Maybe 1Code could be a way to get the best of both worlds, power of claude code and UX of Cursor

ahampt•2h ago
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.

Bunas•1h ago
We started building this after trying existing tools like Claude Code desktop. We realized we couldn't fully transition to them — my co-founder went back to Cursor and burned tons of money on tokens.

So we decided to build a tool that WE would actually use, and once we succeeded with that, we open-sourced it. Since then we've received a lot of feedback on where to take this product - some use cases Anthropic will probably never do, like integrating Codex or adding other z.ai GLM subscription.

We're just trying to ship something we use ourselves, and maybe it could be useful to others, and see where it goes.

forgotpwd16•1h ago
>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+.

Bunas•1h ago
1Code uses the official Claude Code SDK (https://platform.claude.com/docs/en/agent-sdk/overview) which wraps the Claude Code binary. This is the official way to build on top of Claude Code.

Some other tools (like OpenCode) made direct API calls while impersonating Claude Code - that approach got banned. We're not doing that.

forgotpwd16•1h ago
Ah, I see. My only other caveat (other models/agents) is addressed in upcoming work to do. Otherwise, looks good, simple/straightforward UI, functional. Great work overall.
c0wb0yc0d3r•1h ago
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.
Bunas•1h ago
Thanks! for us monetization is more about signal - people who spend $20 are the ones who really want this to work, and we want to build for them. We have a private Discord with our Pro users where we discuss what to build next, share feedback and tips and tricks.
frumplestlatz•12m ago
What's the story on local-only operation with a paid subscription? If it works like it seems to from the screen shots and video, I'm more than happy to pay for this even while using the OSS version (and I probably am going to modify it myself quite a bit for my own use-cases), but in my work environment:

1. Absolutely nothing can be sent off-site

2. All AI API requests must go through our custom gateway (we've got deals with all the major AI providers, and I think that even involves a degree of isolated hosting in specific approved cloud environments)

While $20/mo feels a bit weird for an app that doesn't rely on its own cloud service, I'd subscribe right now just because I do "really want this to work".

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

https://github.com/21st-dev/1code
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