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Ask HN: What are you working on? (September 2025)

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Re: Ask HN: What are you working on? (September 2025)

#121
post #67

I've been working on a 3D voxel-based game engine for like 10 years in my spare time. The most recent big job has been to port the world gen and editor to the GPU, which has had some pretty cute knock-on effects. The most interesting is you can hot-reload the world gen shaders and out pop your changes on the screen, like a voxel version of shadertoy. https://github.com/scallyw4g/bonsai I also wrote a metaprogramming…

Wow the voxel engine work is beautiful! Impressive work man

Re: Ask HN: What are you working on? (September 2025)

#122
I am all-in on a Unity game right now. Working with one other person and hoping to ship to Steam later this year.

Thinking about play testing at scale is a new thing for me. I've been getting into visualization techniques like using 3d textures to build voxel heat maps in-editor. We've managed to accumulate quite a bit of play testing telemetry already. The power of aggregated statistics in the editor views is absolutely mind-blowing to me. For level designers it's like having proper omniscience. Being able to see things like thousands of samples (manifesting as a bright red voxel) that wound up tripping over the same misplaced geometry is like cheating.

Re: Ask HN: What are you working on? (September 2025)

#123

I’m working on an ISBN database that fetches information from several other services, such as Hardcover.app, Google Books, and ISBNDB, merges that information, and return something more complete than using them alone. It also saves that information in the database for future lookups. Mostly because I’m working on a personal library management service called Shelvica to solve my own problems[1], and none of those serv…

Interesting! Have you looked into data from Anna ( https://annas-archive.li/blog/all-isbns-winners.html )?

Didn’t have the time yet, but it’s on my todo list. I have extractors for Google Books, Hardcover.app, and ISBNDB already working, and Amazon, Goodreads, and Anna’s Archive in the todo list.

I do plan on including a link to the book on Anna’s Archive in the “ISBN Search” website. At least to the search page with the filters already filled.

Re: Ask HN: What are you working on? (September 2025)

#125

I started a newsletter that tries to recreate the original magic of stumble upon. To feature cool random stuff from across the internet. I believe the old internet is still alive and well. It's just buried under a mountain of shit. https://randomdailyurls.com/

i am subscriber #48. let’s roll!

ps: love the design of the page!

Re: Ask HN: What are you working on? (September 2025)

#127
I'm building with python/fastapi, react/tailwind/vite, with Claude Code and using test-driven development.

Red-green-refactor is tedious for humans but perfect for AI. And the test names & code make great documentation of every micro decision, running in milliseconds to prevent regressions.

The software itself helps people perform construction approvals.

Old way: dozens of documents and versions sent back and forth over email. Many fiddly details that must be checked - to streamline the process we'll use AI to provide verdicts that help humans make decisions.

I plan to create content & teach what I've learned.

https://approviq.com

Re: Ask HN: What are you working on? (September 2025)

#129
I'm finally organising 20 years of voice notes. Some were quite outdated - I probably no longer need the mozzarella cheese I reminded myself to buy in early 2008.

To organize them, I'm writing a Python Qt application with Claude Code. It started off as vibe coding, but I'm now developing it using processes very similar to those I would use when managing software teams. I've picked up a lot of good tips about that here on HN. I've got Whisper, and fallback online services, transcribing the audio and summarizing it and adding tags. After much UI experimentation, I've landed on something that looks not unlike an email client, with tags in the left pane, a center pane which lists transcriptions and notes about each audio file, and a right pane with more detailed information about the selected audio file.

Next step is to serve it all as a model context protocol server - I need to pick an agent.

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