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Show HN: Bodily Oddities When I was about 11 years old, my best friend and I were playing during recess at school, and I was carrying him around on my back, presumably pretending to be a multipart attack robot. All of a sudden, my heart started hurting, and I collapsed to my knees, and the robot was no more. Every time I inhaled, it would feel like a spike was being driven into my heart, and my breathing got completely shallow. I was sure I was done for, when all of a sudden, after an exhale, it disappeared. It wasn't until I was in my twenties that I learned this was called Precordial catch syndrome and it happens to most everyone. Every friend I've told about it was surprised, and also most knew the feeling. I collected a growing list of strange things bodies do ever since. And now finally I made it into a little page for others to see: https://ift.tt/1IPdyTX It includes a form to tell me about new things, if you think they belong on the page. Feedback welcome! https://ift....

Show HN: Streameriux – TV Player PoC Using Gpuix and Mediabunny https://ift.tt/x9z5Ygy September 11, 2026 at 11:06PM

Show HN: MultiMatte, a Promptable Image Background Removal Model Hey HN, I'm Shreyash from Feyn. We help companies build custom models from their data. Today we're releasing MultiMatte, a background removal model you can aim with words. Name an object in your image. MultiMatte keeps just that thing, and removes everything else. Try it out on your images: https://ift.tt/KHxij3e . Demo video: https://youtu.be/XZ5BJWAkOjs MultiMatte is open source. Build with it using our NoBg library https://ift.tt/j1Lo6wn . Model card here: https://ift.tt/i4qKlj8 MultiMatte is the second iteration of our background removal models. The first was FeyNoBg, which we released here https://ift.tt/RvzXd4j . The big upgrade is promptability. Most models keep all foreground elements when cutting the background. MultiMatte lets you prompt the exact objects you want to keep and remove everything else. For example, If you have an image with a dog and a bowl, you can ask MultiMatte to keep just the do...

Show HN: Give your AI agent on-screen guides that show users where to click Hey HN. I'm Christian, one of the founders of Frigade (YC W23). I've noticed that a lot of in-app AI agents struggle to actually understand the products they exist in. For instance, let's say a user asks an agent how to do something in a given SaaS product. In an ideal case, maybe that agent replies saying it has a tool to do the task and just automates that work entirely for the user. That's a great outcome. But often that's not the case. Maybe there is no tool call for that exact task, or maybe the user's question is best solved by a specific UI workflow or interface. In these cases, many agents tend to fall back on basic RAG on their help center, or sometimes even searching the internet for an understanding of their own product. This can be a very slow process and most of the time help center articles are outdated as products evolve faster than them today. Even worse, no one likes rea...

Show HN: 7-Zip Quine I made 7-Zip Quine by AI, this is the code: https://ift.tt/DbTed12... Example: https://ift.tt/pT1gCfn September 8, 2026 at 11:09PM

Show HN: Bestie, a coding agent that respects you hi friends! this year, i've been working on a general purpose, native terminal coding agent harness. i remember being absolutely struck the first time i ever used claude code and it could just do things. i'm also a big fan of crush and pi. it's pretty early on. i still have yet to build all the higher-level behaviors that make something go from a harness to a proper agent. it turns out, making a coding agent is incredibly hard because you have to strap a development environment to an llm. in my hubris, i had thought "oh—it's just a terminal app that calls some api's!" i'm trying to provide all the things that i think an agent should have out of the box: subagents, sandboxing, compaction, cross-platform support, a beautiful interface, etc. i would be absolutely delighted if you'd give it a go (as far as safety goes, the sandbox tends to be too restrictive rather than too lenient—i'm trying to f...