Ask HN: What are you building – I'd try it, pay for it, or even star your repo

StudyEngine. A platform for uploading course materials and it generates quizzes, flashcards, etc. I started building it while taking an NLP course this past Spring. Right now, I'm evaluating various data sets and approaches for transcribing handwritten math. Trying to see if I can expand past just text questions and answers and support linear algebra and calculus. For that I want to be able to take pictures of my hand worked solutions to upload for grading.

At some point, I might try and open it up and try to get paying customers, but for now I'm just using it for the UIUC MCS coursework. Maybe I'll try and get beta testers in one of my future courses.

https://studyengine.app

I've been working on pi-protokoll, an extension for the Pi coding agent. When I ran long sessions on a local model, compaction kept stalling for minutes because the model had to dismiss its cache and read the whole conversation as well as its compacted version. So now it writes a short protocol at the end of each turn, and compaction mostly just assembles those. Started as a quick fix, but by now it's gotten pretty polished: https://github.com/sebion7125/pi-protokoll

MacroCodex - Diet coach app https://macrocodex.app/

Smart Progressions, workout app, fully programmable: https://symbiote-studio.macrocodex.app/

AI and manual calorie tracker: https://caloriecodex.macrocodex.app/

Working on keycontain.com - I'm trying to use agents to automate various tedious things I'm responsible for, and all the API keys that services give out are way too permissive. KeyContain lets you restrict calls to those API keys down to individual arguments, and lets you declare some requests to require approval.

I'm now using it to safely join together services like dns management, app deployment, accounting and grant-writing, etc. I may be biased, but I think it's great!

I'm making tools to convince people to get into web archiving.

https://memoryhole.app/

If you get stuck at any point send me an LLM-generated email. I won't be offended. I promise.

GetMarketAlerts helps busy investors stay on top of their stocks without constantly checking the market.

https://getmarketalerts.com/

Do you have a few friends you’d like to talk to more than you do?

If so try Beacon! A mobile app that summons your available friend for a call with a single tap!

https://trybeacon.chat/

Check my profile for a link that has the stuff I'm working on (I'm not posting the links directly because I'm not sure this isn't bot/spam).

I've been building VT Code, an open-source coding agent written in Rust.

It focuses on structural code editing, sandboxed execution, and keeping developers in control of agent actions. Supports multiple LLM providers, with a CLI/TUI and a new native macOS app built with GPUI, both sharing the same agent engine.

Would love your feedback!

https://github.com/vinhnx/VTCode