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Re:Ask HN: What are you building – I'd try it, pay for it, o... by tsergiu on Saturday November 07, 2026 @03:56PM (#50407973)
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!

Re:Ask HN: What are you building – I'd try it, pay for it, o... by cjflog on Saturday November 07, 2026 @06:29PM (#50409042)
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/

Re:Ask HN: What are you building – I'd try it, pay for it, o... by BrunoBernardino on Saturday November 07, 2026 @09:02PM (#50409857)
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).
Re:Ask HN: What are you building – I'd try it, pay for it, o... by flippant on Sunday November 08, 2026 @01:05AM (#50410835)
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.

Re:Ask HN: What are you building – I'd try it, pay for it, o... by wz3chen on Sunday November 08, 2026 @02:27AM (#50411142)
GetMarketAlerts helps busy investors stay on top of their stocks without constantly checking the market.

https://getmarketalerts.com/

Re:Ask HN: What are you building – I'd try it, pay for it, o... by faangguyindia on Sunday November 08, 2026 @04:20AM (#50411641)
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/

Re:Ask HN: What are you building – I'd try it, pay for it, o... by sebion7125 on Sunday November 08, 2026 @10:23AM (#50414054)
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
Re:Ask HN: What are you building – I'd try it, pay for it, o... by ryanchants on Sunday November 08, 2026 @11:29AM (#50414654)
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