Ask HN: Can you share what you built using Cursor/Agentic IDEs?

4 points by ludamn a day ago

I had played with Cursor/Claude Code a bit but would like to see the result of other people's work using these tools, bonus point if you can share the source.

If it matters, I'm asking this to gather information to make a decision, I received an offer to work in a company that requires all code to be crafted this way.

I already have a good job and I'm happy with it, so besides a much bigger/trendier name in my CV and more pay there's not a lot in this opportunity for me. I'm also aware that if I were to leave my current position my team could be heavily affected since I usually play a key role in helping us deliver work on time (not that my company would do the same for me, but at the end of the day I don't want to willingly screw my coworkers' chance of success/stability).

As for this new opportunity: What concerns me is that I'm worried about the scale/size of the applications and if current SotA LLMs are capable of building something that's maintainable in the long run. They're a big name company and this work isn't for any of their main products, so I fear that this might just be a pet project for them and if it doesn't work they will scrap everyone involved in the project in a few months.

Sorry for asking this on a public forum, unfortunately I don't have folks in my circle that could help me w/ this question, so all I can say is thanks in advance for your help :bow:!

PS I tried googling and didn't find conclusive results to this question (this is a polarized topic!), it doesn't help that most links I found in popular reddit threads on this subject are dead, the most notable app I found was WithAffluent

muzani 11 hours ago

I've done it on a lot of fintech production stuff over the last few years. I won't link them as it's a little misleading because they're not exclusively coded in these tools. Rather they're used as parts and helpful for grepping and running tests after the work is done.

They're something like electric vehicles - faster, cheaper, safer, with some new unknowns to be wary of. The bad stuff comes from expecting 2x the work done with half the people. If the employer gives you time to code properly, read, revise, it's all great. You'd be writing code faster, reading more code, understanding more code, having many eyes reviewing the code.

You will get to 10k LOC in a day, which means that you have to set architecture up right away for any new project. You'll need to do best practices, things like XP which people tend to skip over because they don't have time.

It is also very bad with things that it's not trained on, like custom SDKs and integrating GPT-5. This is much like trying to drive your EV through a river.

joegibbs 20 hours ago

I think the ideal limit as far as complexity with no manual coding would be something like this new marketing site for my game (warning: 100mb of video on Chrome): https://redo--fallofanempire.netlify.app/

Cursor with Gemini 3. I didn't manually write a single line for it (except for the actual wording). Gemini did the React stuff, styling, writing ffmpeg commands for re-encoding the videos to work better with scroll-based scrubbing, splitting them out into AVIF image sequences for mobile, etc. I use Cursor + Codex for the actual game as well but it involves a lot of manual work - even with a really modular system like Unreal it gets convoluted.

I tried doing a spreadsheet application heavily using Sonnet 4 (https://app.embedsheet.ai/) and found it would make a ton of mistakes and massive files that it would then be unable to reason with, I think if I did it again I'd do all the core stuff by hand.