Wilhelm Erasmus's Feed

Show HN: Cliparr – Export clips from your personal media server

Hey all,To be up-front, this is a vibe-coded project. I have been developing a large number of personal tools that I have had in my backlog for years, finally realized by vibe coding. That said, I have been a developer for somewhere around 20 years.This is a simple Vite/React app with a tiny Node.js proxy for authenticating with Plex (and other media servers). Run the docker image on the same network as your Plex media server, load up the currently playing video file, and make your clip.Her

Show HN: Kelet – Root Cause Analysis agent for your LLM apps

I've spent the past few years building 50+ AI agents in prod (some reached 1M+ sessions/day), and the hardest part was never building them — it was figuring out why they fail.AI agents don't crash. They just quietly give wrong answers. You end up scrolling through traces one by one, trying to find a pattern across hundreds of sessions.Kelet automates that investigation. Here's how it works:1. You connect your traces and signals (user feedback, edits, clicks, sentiment, LLM-as

Show HN: Privacy-first retirement planner – no bank linking, AI-powered analysis

I'm a recently retired solo founder who built this because every retirement planning tool I tried wanted my bank credentials or was trying to sell me financial products. planwithclarity.app runs entirely in your browser — your data stays on your device by default. No account needed to start planning. Built with React as a single-file app, deployed on Netlify. AI plan analysis powered by Claude. Features include Monte Carlo simulation with historical backtesting (1928-2025), withdrawal strat

Show HN: Would you score a podcast debate?

Hello HN, I've been working on a podcast platform where two people debate (or just discuss) a topic and the audience scores them. We use a 1-7 scale on three dimensions:information (1 = false, 4 = neutral, 7 = true)intensity (1 = boring, 4 = entertaining, 7 = too much)interaction (1 = unfair, 4 = neutral, 7 = fair)Would love some feedback on the UI and if you see any value in submitting your score as you watch a podcast. Here are a few examples:https://www.taout.tv/syndicated

Ask HN: At ~165k tokens, does Claude Opus 4.6 1M outperform Opus 4.6 200k?

Here is the question for which I cannot find an answer, and cannot yet afford to answer myself:In Claude Code, I use Opus 4.6 1M, but stay under 250k via careful session management to avoid known NoLiMa [0] / context rot [1] crap. The question I keep wanting answered though: at ~165k tokens used, does Opus 1M actually deliver higher quality than Opus 200k?NoLiMa would indicate that with a ~165k request, Opus 200k would suck, and Opus 1M would be better (as a lower percentage of the context

Full-stack development with Java, React, and Spring Boot

React and Java come together seamlessly in this three-part introduction to full-stack development with React and Spring Boot. Get started with a basic application framework that you can customize as needed.

Polk React review: Built-in Alexa soundbar for your TV

TV and home video editor Ty Pendlebury joined CNET Australia in 2006, and moved to New York City to be a part of CNET in 2011. He tests, reviews and writes about the latest TVs and audio equipment.

New React bug that can drain all your tokens is impacting 'thousands of' websites

A critical vulnerability in React Server Components is being actively exploited by multiple threat groups, putting thousands of websites — including crypto platforms — at immediate risk with users ...

Ask HN: Are You Using Finetuning?

How? For what?fintuneing seems to be out of fashion (if it were really ever in fashion), but I still see folks like Karpathy mention reaching for it as a tool.But is anyone in any business capacity on here doing that? Are you finetuning any remote LLM or something self-hosted? What for?I’m just curious where the line is of “oh this is better encoded in the models weights rather than in RAG/thinking over context stuff it needs to figure out.

Digital Ocean blocked my account

Digital Ocean blocked my account. They said my "deployment and actions were in violation of our Terms of Service" which is remarkable because all I did was create a single droplet and run a basic setup script on it. The next day — blocked, shut down, deleted. No warning, no explanation, no appeal.Their Terms of Service allows them to delete your servers, your data, everything — at any time, for any reason, including none at all. The tiniest perceived risk to them outweighs any amount o

Show HN: A Zod alternative with runtime schema introspection

I built a TypeScript schema validation library that takes a different architectural approach from Zod and similar tools.I started this project before I ever used Zod — I wanted to understand how schema validation/inference libraries works by building one from scratch. As I iterated on it, I realized the architecture was turning out surprisingly well, so I started using it in my internal projects. Now I consider it a full-fledged alternative to Zod with some unique features of its own, and I

Show HN: I'm trying to get 100 users in 24 hours with this simple idea

I’ve been working on a small project called Buildfeed – a place where you can post what you’re building instantly, without setup or “launch” pressure.I currently have ~40 users, and I’m trying an experiment:Can I reach 100 users in the next 24 hours?No ads, no audience, just posting and sharing.If you’re building something, you can try it here: https://www.buildfeed.coI’ll update this thread with what happens (what works / what doesn’t).

Show HN: SharpSkill – We built the future of AI coding interviews

Gm HN,Quite hard to code without AI nowadays.We decided to help people monitore it, in order to reach their own goals.AI writes your code, we teach you how to use it.

Unlocking cloud inference compute for OpenClaw

we make openClaw cost be 1/10 of the cost by unlocking unused compute on the cloud be the right architecture for agentic inference. We seamlessly bring unused VMs, hardware on cloud for inference. Reach us at [email protected] if you would like early access to OpenClaw on unused cloud compute

Show HN: I built an open protocol for Agent-to-agent commercial negotiation

AI agents can’t do business and negotiate commercial deals with each other safely today. I built a protocol to prevent the problems agent-to-agent negotiation will inevitably run into once procurement and seller agents are mainstream.A2CN is an open protocol for agent-to-agent commercial negotiation. We’re already seeing procurement agents negotiate deals and huge savings for buyer departments in the enterprise. Companies like Pactum, Fairmarkit, and Zip have agents already transacting with supp

Ask HN: Should AI credits be refunded on mistakes?

Something I’ve noticed (I’m using Claude subscription so no refunds but it applies to usage windows) is that sometimes AI makes mistakes so if something is important I tell Claude code to spin up a couple of sub agents and verify the information, often there will be a mistake and it gets rectified.It feels unfair I have to pay (or lose some usage) for this.Interested in other people’s thoughts.

React tutorial: Get started with the React JavaScript library

Despite many worthy contenders, React remains the most popular front-end framework, and a key player in the JavaScript development landscape. React is the quintessential reactive engine, continually ...

Admins and defenders gird themselves against maximum-severity server vuln

Security defenders are girding themselves in response to the disclosure of a maximum-severity vulnerability disclosed Wednesday in React Server, an open-source package that’s widely used by websites ...

Experts warn this 'worst case scenario' React vulnerability could soon be exploited - so patch now

Critical React flaw (CVE-2025-55182) enables pre-auth RCE in React Server Components Affects versions 19.0–19.2.0 and frameworks like Next, React Router, Vite; patches released in 19.0.1, 19.1.2, 19.2 ...

Show HN: Tusk Drift – Open-source tool for automating API tests

Hey HN, I'm Marcel from Tusk. We’re launching Tusk Drift, an open source tool that generates a full API test suite by recording and replaying live traffic.How it works:1. Records traces from live traffic (what gets captured)2. Replays traces as API tests with mocked responses (how replay works)3. Detects deviations between actual vs. expected output (what you get)Unlike traditional mocking libraries, which require you to manually emulate how dependencies behave, Tusk Drift automatically rec