Show HN: X402 – an open standard for internet native payments https://ift.tt/mfjK3Nu

Show HN: X402 – an open standard for internet native payments Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to settle. 90 second demo: https://www.youtube.com/watch?v=PV-L2AfLhJg Problem: Every time we want to use a new API we have to: find the service online create a developer account, copy a secret key into env vars, pre-fund or hand over a credit card This flow blocks agents even more. They can’t solve CAPTCHAs or enter credit cards. It also hurts sellers: fraud, chargebacks, onboarding friction, and marketing to humans are huge pain points. Why buyers care Zero setup – Hit a new endpoint immediately. Runtime discovery – Because every x402 service exists in a common registry, an agent can search, compare, and invoke in one loop. Self-assembling agents become practical. Easily create proxy servers – Want an endpoint that isn’t supported? You can use our proxy server template to spin up an x402-compatible instance yourself using traditional API keys, and monetize it for others wanting access. Why sellers care Reach incremental demand – Long-tail bots, side projects, one-off scripts, all of which too small for an account/signup flow, can now pay you. Micropayments without fraud – All payments settle onchain, nothing for stolen credit cards or chargebacks to reverse. Embedded distribution – instead of marketing to humans, create a compelling service meeting demand for agents and watch the requests roll in. How we got here Last year we launched AgentKit (wallets for AI agents). Tens of thousands of agents now hold onchain balances, but they can’t pay for most web services. We revived the long-unused HTTP 402 (“Payment Required”) status code and wrote a spec to make it real. Marc Andresseen calls the lack of native value transfer “the original sin of the internet,” and we see x402 as the absolution of this sin. How it works: x402 specifies a standard response body to accompany a 402 status code. This response body contains machine understandable instructions for how to pay. Payments are signature based an included as an `X-PAYMENT` header in a subsequent request to the same API endpoint. The accepting server can verify and settle payment themselves, or delegate the onchain settlement to what we call a facilitator. This means you don't have to touch crypto as a developer, you can just integrate a middleware and start receiving stablecoin payments in as little as 1 line of code. Because x402 natively traverses your existing client / server requests, it can be implemented in any language, and doesn't require webhooks, or any other complex integration. Its literally this simple: `paymentMiddleware("0xYourAddress", {"/your-endpoint": "$0.01"})` Ask HN API providers – does the one-line integration fit your stack? What’s missing? Agent / infra builders – if a service isn’t available is the proxy server template sufficient? File issues, PRs welcome Everyone – poke holes in the trust and fee model; we’d love to iterate with your feedback Curious to learn more? Check out our documentation and repo for more information, and please don’t hesitate to reach out to get onboard. https://ift.tt/MVeSvHZ https://x402.org https://ift.tt/6iERQ20... https://www.x402.org/ May 6, 2025 at 11:54PM

Show HN: Korey – a product management agent for software teams https://ift.tt/LUsKuvW

Show HN: Korey – a product management agent for software teams https://korey.ai/ May 7, 2025 at 12:23AM

Show HN: Automate your workflows with screen recordings and AI agents https://ift.tt/Mx6QudR

Show HN: Automate your workflows with screen recordings and AI agents Hi all, There are tons of AI agent builders out there. But let’s be honest, for most people, they’re still hard to use. Every single day, I see people struggling to create workflows with these agents and posting their requirements on Upwork. So we built Nutix. Just upload your screen recording and that’s it. Nutix watches what you do, understands your workflow, and builds it with AI agents instantly. You'll have to authorize access to underlying application for agents runs. Access over 2500+ applications and build your automations on top of it. No prompts. No coding. Just show it once , and you're done. https://nutix.ai May 6, 2025 at 03:32AM

Show HN: Tired of bloated time trackers? Here's a dead-simple, free one I built https://ift.tt/lW3wPRh

Show HN: Tired of bloated time trackers? Here's a dead-simple, free one I built Hey HN! I made TimeAnt because my dad needed a simple way to track his time at work and he didn’t like the other apps out there because they were too complicated or had way too many features. So, I built an app that just does the basics: track work hours, meetings, breaks, lunch and optionally lets you add notes - and that's it. It’s totally free, works both online and offline, and doesn’t require an account (but you can create one if you want). The goal was to keep it super simple and let you focus on tracking time without all the fluff. It also gave me a chance to learn Swift and build my first native iOS app! I’d love to hear what you think! Best, Viktor https://ift.tt/PYHIX9n May 6, 2025 at 01:21AM

Declarative Tcl/Tk UI Library for Python https://ift.tt/pBFXMNI

Declarative Tcl/Tk UI Library for Python https://ift.tt/Ij2TCdR May 5, 2025 at 11:32PM

Show HN: ImagePuzzle – multiplayer picture puzzle game https://ift.tt/RAFI6ia

Show HN: ImagePuzzle – multiplayer picture puzzle game I made ImagePuzzle, a simple and fun browser game. Would love your thoughts! https://ift.tt/ziaRkF7 May 4, 2025 at 10:29PM

Show HN: Search Engine Selector – This is my default search engine now https://ift.tt/aq6gKEV

Show HN: Search Engine Selector – This is my default search engine now I built this to escape from the Google bubble. Instead of sticking with just one search engine, it nudges you to choose the most appropriate one for each query. https://ift.tt/BrLtRXG May 4, 2025 at 10:07PM

Show HN: Live Air Quality Monitor https://ift.tt/fazAZbU

Show HN: Live Air Quality Monitor A comprehensive indoor air quality monitoring system built with ESP32-C3 Super Mini and multiple environmental sensors. This project helps you monitor CO2, temperature, humidity, volatile organic compounds (VOCs), nitrogen oxides (NOx), and particulate matter (PM1.0, PM2.5, PM10) to maintain healthy air quality in your home or office. https://ift.tt/YohTp3H May 4, 2025 at 12:21AM

Show HN: Poopoo peepee Language – A vowel-based, programming language https://ift.tt/phI6Yrn

Show HN: Poopoo peepee Language – A vowel-based, programming language A language consisting strictly of the letter p separated by vowels. Originally dreamed up for April Fools’, I’m now planning to put it through its paces in this year’s Advent of Code. https://ift.tt/KFmTLRJ May 3, 2025 at 08:08PM

Show HN: Kinematic Hand Skeleton Optimization in Jax https://ift.tt/lu1IwGU

Show HN: Kinematic Hand Skeleton Optimization in Jax I've been trying to wrap my head around fwd/bwd kinematics for imitation learning, so I built a fully‑differentiable kinematic hand skeleton in JAX and visualized it with reruns new callback system in a Jupyter Notebook. This shows each joint angle and how it impacts the kinematic skeleton. https://ift.tt/hfOoCZM May 3, 2025 at 02:33AM

Show HN: Traycer.ai – Turn GitHub Issues into a Step-by-Step Plan https://ift.tt/tQRxfrL

Show HN: Traycer.ai – Turn GitHub Issues into a Step-by-Step Plan Hey everyone! We've built Traycer, a tool that transforms your GitHub issues—everything from descriptions and attached images to ongoing conversations—into clear, actionable implementation plans. You can easily import these plans into your IDE with our extension or use them with any other coding assistant you prefer. We'd love to hear your thoughts and feedback. Traycer is totally free for open-source projects, and we've got a 2-week free trial if you're working with private repos. Give it a try and let us know what you think! https://ift.tt/2qVE9el May 3, 2025 at 01:56AM

Show HN: Polyseed – first(?) pq PAKE implementation https://ift.tt/YKqV3Uo

Show HN: Polyseed – first(?) pq PAKE implementation https://ift.tt/5DF4IOc May 2, 2025 at 09:10PM

Show HN: I built a synthesizer based on 3D physics and launched the product https://ift.tt/ALgGhtT

Show HN: I built a synthesizer based on 3D physics and launched the product I've been working on the Anukari 3D Physics Synthesizer for a little over two years now. It's one of the earliest virtual instruments to rely on the GPU for audio processing, which has been incredibly challenging and fun. In the end, predictably, the GUI for manipulating the 3D system actually ended up being a lot more work than the physics simulation. So far I am only selling it direct on my website, which seems to be working well. I hope to turn it into a sustainable business, and ideally I'd have enough revenue to hire folks to help with it. So far it's been 99% a solo project, with (awesome) contractors brought in for some of the stuff that I'm bad at, like the 3D models and making instrument presets/videos. The official launch announcement video is here: https://www.youtube.com/watch?v=NYX_eeNVIEU But if you REALLY want to see what it can do, check out what Mick Cormick did with in on the first day: https://ift.tt/vM3POlU I've kept a fairly detailed developer log about my progress on the project since October 2023, which might be of interest to the hardcore technical folks here: https://ift.tt/Ufe1bxu I also gave a talk at Audio Developer Conference 2023 (ADC23) that goes deep into a couple of the problems I solved for Anukari: https://www.youtube.com/watch?v=lb8b1SYy73Q https://anukari.com May 2, 2025 at 11:42PM

Show HN: HN top 30 summarized by Gemini 2.5 Pro https://ift.tt/YZ1WBuq

Show HN: HN top 30 summarized by Gemini 2.5 Pro Fun little project, had Gemini 2.5 Pro summarize HN's top 30 each hour, both the stories and comment sections. Pretty impressed with Gemini 2.5. It's probably the first model other than Claude 3.7 Sonnet where I actually find the output readable. I normally use 3.7 Sonnet for coding, but used Gemini for the codegen on this one as well. Was pretty impressed! Using Cursor, it seemed to instruction-follow better than Claude generally does, and remain lucid during very long agent sessions. Thanks for your feedback! https://ift.tt/16IGog4 May 2, 2025 at 01:42AM

Show HN: Lichen – Manage and create code licenses on the CLI and with TOML https://ift.tt/bq9alxQ

Show HN: Lichen – Manage and create code licenses on the CLI and with TOML Hey! I'm Miles, I built this tool to be a fast and reliable solution for generating licenses on the CLI. Licensing has always been a point of stress for me, with how much is at stake. If I copy one from the wrong website, the version I download is the wrong one, or any number of mishaps, my whole code is at risk. We see this fiasco play out all the time. We shake our saddened heads and go on. No longer! Lichen is designed to generate licenses sensibly with three words on the CLI. `lic gen MIT`. Or in a `.lichen.toml` in your project root. Add authors/maintainers with --authors, date it with --date, license specific parts with exclude patterns and double licenses. Project big or small, it's got everything (I think). (Tell me what it's missing please). It uses SPDX licenses for correctness. Written in Rust, you'll know you're safe, and if you want to be extra cautious, feel free to create license headers on all your files (Fast too! Can do this for the entire cargo project in 22s uncached). I'm happy to answer any questions/concerns/whatever about my tool, it's my biggest project to date (And therefore my most bug-ridden...) https://ift.tt/MNXkh7r May 1, 2025 at 10:25PM

Show HN: Robot Unlock – an open-ended programming game/zachlike https://ift.tt/XUcFPoM

Show HN: Robot Unlock – an open-ended programming game/zachlike Hello, In 2010 I made an open-ended programming game based on Befunge and Brainf*k. I was young and didn't know what I was doing - coding it in AutoIT of all things and using borderless windows for sprites. Nevertheless, it was a full game and some people actually played it, sharing solutions with each other. I took it as a sign that the game had some potential - I appreciated this very much at the time. It was zachlike at its core, except that it came out earlier than SpaceChem and the term hadn't been coined yet. Years passed, I worked in the game industry, had some fun, learned a few things and eventually burned out. Meanwhile, Zachtronics kept making games and managed to define a genre, proving that there indeed was a market for such games. I'm very happy about that. Now I want to have a shot at going indie and almost 15 years later I'm launching the sequel to my 2010 game. One of my playtesters has been at it for 26 hours so I know it can be a real nerd sniper. It's a game for the type of person who loves quirky languages and optimizing their programs under extreme constraints. I have been hanging out on HN for a long time and thought some in this community might like the game. I want to keep doing this and I will as long as I can afford it. Looking forward to your questions and feedback. https://ift.tt/mq9sHkw https://ift.tt/cElORtB May 1, 2025 at 09:08PM

Show HN: The Azure Key Vault Emulator https://ift.tt/vcQu3jn

Show HN: The Azure Key Vault Emulator Full introduction blog post is here with a setup/usage guide too: https://ift.tt/yOT0LaF https://ift.tt/IBrYoed May 1, 2025 at 02:01AM

Show HN: I built a fun AI tour guide into Google Street View https://ift.tt/wOtvyBi

Show HN: I built a fun AI tour guide into Google Street View I love culture + travel, and one of my favorite pastimes is dropping into random streets on Google Street View. I just LOVE getting a tiny snippet into how people live, the architecture, and discovering hidden corners of places I'll probably never visit. I'm kinda weird like that. When AI came along, I started asking it to explain what I was looking at - and I learned a ton. I couldn't stop using this combo. So I built Streetwhip. It's kinda like reverse Geoguessr - instead of guessing where you are, you get educated about places as if you had a smart local guide with you. What used to be just "some random street in Buenos Aires" becomes a rich learning adventure about Argentine architecture, why things look the way you are, and stuff about the history and way of life. I've been having so much fun with it. I LOVE when I'm on an ordinary looking street and suddenly I find out there's a WILD historic story behind why the architecture is a certain way. A couple of tips: - make sure you log in! If you don't, things aren't really real-time (I had to do this because Street View's API costs can get expensive and this is just a fun hobby project for me). - play around with the categories - they're fun. I'm curating in more places over time. - the search is not perfect - when it works its magical (totally llm-driven). But sometimes it isn't. - don't use this on mobile, it kinda sucks Would love to get your thoughts on the concept and what you could see it turn into! :) P.S. Oh and one of my favorite features: radio! You get a live radio from a stream in the country (please mute it if you get annoyed - but I promise you it makes things a whole lot more immersive) https://streetwhip.com/ May 1, 2025 at 12:21AM

Show HN: Jarvis-AI, an AI Agents network that kills admin work in big corporate https://ift.tt/YtDWcab

Show HN: Jarvis-AI, an AI Agents network that kills admin work in big corporate Cheers HN, We're Oli and Pascal, two friends from ETH Zürich. We built a network of AI Agents for large organisations, that finally gets rid of all admin work for employees. Current features are: - Schedule, move or cancel meetings (via Google Calendar or locally) - Dynamically adapt meetings according to stakeholders’ availabilities (internal communication of the agents) - Summarize incoming mails (via Gmail) - Create a project plan (command: plan XXX = [project description]) including stakeholders, timeline and cost estimate - Plan, assign and view tasks - Do all of the above via audio We believe that the network point is the core of the product. If you're planning a new project, Jarvis should not only give ideas but also propose whom to work with based on the context information of all the other Jarvises in the company. Instead of sending mails, information flow happens between the Agents and the audio feature makes it super natural to speak to your Jarvis. This is very early stage, so any advice/feedback is much appreciated :) https://ift.tt/bYgpJI6 May 1, 2025 at 12:19AM

Show HN: Tariff Calculator for Amazon https://ift.tt/o7PExK0

Show HN: Tariff Calculator for Amazon I made a simple tariff calculator extension for Amazon. It queries gemini flash 2.0 to determine the category, and then matches it with the corresponding tariff category. Fun quick hack – it does brick a little – but the majority of the code was cobbled by a first pass of Claude Code Repo is here: https://ift.tt/uS49esT https://twitter.com/W_Y_X/status/1917385625696887159 April 30, 2025 at 06:43AM

Show HN: I made an app to learn guitar scales https://ift.tt/82KOnh6

Show HN: I made an app to learn guitar scales Hi, I'm Sergei, the creator of Guitartonic. I've been playing guitar for 17 years, but never really learned how to improvise. Most of the elaborate music theory PDFs I found online overwhelmed me, so I built a simple tool to practice basic scales and modes. It worked so well that it even inspired my roommate to pick up his guitar again. The app has been live for a few months. I had moved on to other projects and almost forgot Guitartonic existed, until the website started getting organic traffic. I noticed that people were coming to the site (somehow, 90% of the traffic is direct) and staying for four to ten minutes on average. So someone was actually using it! I even received a few heartwarming messages from users saying Guitartonic rekindled their love for playing guitar. Yesterday, someone donated $25 to support my work, which motivated me to share the project here and ask for feedback. Fellow guitarists, how did you learn scales and improvisation? What helped you the most along the way? I'd love it if you gave Guitartonic a try and let me know what you think! https://ift.tt/DrGvapi April 30, 2025 at 12:55AM

Show HN: Auto-fix your GitHub PR issues with Proton for FREE https://ift.tt/CbGE7Fw

Show HN: Auto-fix your GitHub PR issues with Proton for FREE Hey HN! We just launched Proton, a GitHub app that listens to PR review comments and suggests code changes to address them. It creates a new PR based on top of your working branch, so you can simply review and merge. How is it different from other AI code review tools? Others focus on pointing out issues, whereas Proton focuses on addressing them. Although some of them can also suggest fixes, they tend to only work on nearby lines or within a single file. But real-world feedback often involves cross-file changes like “Let’s extract this to a separate component”, or “We should follow the same pattern of doing things in file X, Y and Z”. Proton has full repo context, so it can handle these kinds of feedback. Want to see it in action? Here’s a short demo: https://youtu.be/zDEfw-R2jWc , and there’s the PR shown in the demo video: https://ift.tt/maZpIX6 It’s free, takes two clicks to install, and works out of the box. Here’s the install link: https://ift.tt/bGi1tS0 We'd love to get some early users and hear your thoughts — reply here or email us at [support@proton.codes](mailto:support@proton.codes) Cheers! https://ift.tt/TGLUaW6 April 29, 2025 at 11:19PM

Show HN: ProKZee – An Open-Source Network Security Tool Written in Go https://ift.tt/dfGRDT2

Show HN: ProKZee – An Open-Source Network Security Tool Written in Go Hi HN! After several months of work, I'm excited to share ProKZee, a free and open-source network security tool built with Go and React using Wails framework. ProKZee allows developers, security researchers, and penetration testers to intercept, inspect, and modify HTTP/S traffic — similar to tools like Burp Suite, OWASP ZAP, and Caido — but with a fast native UI, modern UX, and some unique features. https://ift.tt/xvFlYiQ https://ift.tt/xvFlYiQ April 29, 2025 at 01:11AM

Show HN: Heart Rate Zones Plus – The first iOS app I ever developed https://ift.tt/VaMghNn

Show HN: Heart Rate Zones Plus – The first iOS app I ever developed https://ift.tt/MoXbnj7 April 29, 2025 at 12:12AM

Show HN: Zotero-MCP – Connect Your Research Library with Your AI Assistant https://ift.tt/dQEWqNw

Show HN: Zotero-MCP – Connect Your Research Library with Your AI Assistant Hi all! I forgot to share my project here, but since it just got over 1.2k calls on smithery, I figured that people here may be interested in giving it a try! Essentially it allows you to easily connect your zotero library to any LLMs through a MCP client, enabling the LLMs to read the papers that you collected, your notes, and the annotations - and it works both on your local and cloud library. Check this out! I would love to hear your feedback. :) https://ift.tt/U0yh8Zb April 29, 2025 at 12:06AM

Show HN: Announcing Nest2D.dev: Open-Source Server-Side Nesting for DXF https://ift.tt/qrs1uG0

Show HN: Announcing Nest2D.dev: Open-Source Server-Side Nesting for DXF https://ift.tt/KyfNPx6 April 27, 2025 at 11:39PM

Show HN: Start working in AI research by using these project ideas from ICLR2025 https://ift.tt/QJbPuOp

Show HN: Start working in AI research by using these project ideas from ICLR2025 https://ift.tt/uphFTw3 April 27, 2025 at 10:41PM

Show HN: Daily Jailbreak – Prompt Engineer's Wordle https://ift.tt/ah94RVY

Show HN: Daily Jailbreak – Prompt Engineer's Wordle I created a daily challenge for Prompt Engineers to build the shortest prompt to break a system prompt. You are provided the system prompt and a forbidden method the LLM was told not to invoke. Your task is to trick the model into calling the function. Shortest successful attempts will show up in the leaderboard. Give it a shot! You never know what could break an LLM. https://ift.tt/ShXTKwk April 28, 2025 at 12:02AM

Show HN: Gemini Document Processor – Generate Th Summaries from PDF/ePub with AI https://ift.tt/7Sg8YbN

Show HN: Gemini Document Processor – Generate Th Summaries from PDF/ePub with AI Hello HN! I'd like to share Gemini Document Processor, an open-source tool I've developed. This tool uses Google's Gemini AI (their latest API) to create high-quality Thai language summaries from PDF and EPUB files. Key features include: - Support for both PDF and EPUB files - Intelligent chunking for efficient Gemini API processing - Automatic image extraction from documents - Direct integration with Obsidian (export directly to vault) - Smart retry system when errors occur (switches models/increases timeouts) - Real-time progress tracking via web interface I built this tool because I needed to read many English documents and wanted detailed summaries in Thai. If you frequently read long documents or want to build a knowledge base from multiple sources, this tool could save you significant time. The output is a well-formatted Markdown file with images and metadata, ideal for storing in Obsidian, Notion, or other PKM systems. Try it by cloning the repo and running it with Python (requires a Google Gemini API key). Feedback, suggestions, and contributions are very welcome! https://ift.tt/usKB8UL April 26, 2025 at 06:20PM

Show HN: Install CLI Apps via Plain HTTP – No Docker, No Binaries, Just Curl https://ift.tt/gnvlhat

Show HN: Install CLI Apps via Plain HTTP – No Docker, No Binaries, Just Curl Tired of bloated installers and complex DevOps pipelines? I built PPORT — a terminal-based messenger — to demo a crazy simple idea: 1. Instant CLI delivery over HTTP 2. Just curl or irm, nothing else 3. TypeScript on the fly via Deno 4. Live deployment without Docker or builds How it works: Visit https://pport.top Run one command (curl -fsSL pport.top | sh) PPORT streams scripts and source files dynamically based on your client (curl, browser, Deno) No packaging. No compiling. No friction. Source on GitHub: https://ift.tt/hFn310x Curious what else could be built with this approach? Would love to hear your ideas. https://pport.top April 26, 2025 at 10:21PM

Show HN: Rocal UI – A simple template engine with Rust https://ift.tt/bkg3OrN

Show HN: Rocal UI – A simple template engine with Rust https://ift.tt/B2VXORZ April 26, 2025 at 11:56PM

Show HN: Lucidia, a WebGL visualizer inspired by Drempels https://ift.tt/kwPrABo

Show HN: Lucidia, a WebGL visualizer inspired by Drempels Made with ChatGPT, open source at https://ift.tt/CTDp1wU https://ift.tt/HKTXbgz April 26, 2025 at 12:28AM

Show HN: Open-Source, Self-Hostable Rate Limiting API https://ift.tt/QA29TvL

Show HN: Open-Source, Self-Hostable Rate Limiting API https://ift.tt/SGZyUBY April 25, 2025 at 11:03PM

Show HN: Claude Code with GUI and Block Based Prompt Editor (MIT) https://ift.tt/oebzdiw

Show HN: Claude Code with GUI and Block Based Prompt Editor (MIT) https://ift.tt/GpEHDxC April 25, 2025 at 10:28PM

Show HN: I Added Translation to My RSS Reader Project https://ift.tt/czZGYUm

Show HN: I Added Translation to My RSS Reader Project https://ift.tt/mYBFTQR April 25, 2025 at 01:59AM

Show HN: Interactive map of Palo Alto police record log PDFs https://ift.tt/6wauj3n

Show HN: Interactive map of Palo Alto police record log PDFs Got this idea when a landlord suggested I check the police logs when I asked about neighborhood safety during house hunt. I built this for myself to easily look up an address and see nearby police events. The data covers incidents from February to April 2025. Data Source: https://ift.tt/eobNEOZ... Source Code: https://ift.tt/ueasQOi (lot of slop as it was vibecoded) https://ift.tt/fNK8vy1 April 25, 2025 at 01:37AM

Show HN: GitNote- Online MD note editor that syncs to GitHub https://ift.tt/75PK6Jk

Show HN: GitNote- Online MD note editor that syncs to GitHub https://ift.tt/PBWxF9z April 25, 2025 at 01:25AM

Show HN: I reverse engineered top websites to build an animated UI library https://ift.tt/JA1IHzD

Show HN: I reverse engineered top websites to build an animated UI library Looking at websites such as Clerk, I began thinking that design engineers might be some kind of wizards. I wanted to understand how they do it, so I started reverse-engineering their components out of curiosity. One thing led to another, and I ended up building a small library of reusable, animated components based on what I found. The library is built in React and Framer Motion. I’d love to hear your feedback https://reverseui.com April 24, 2025 at 11:17PM

Show HN: Body Controlled 3D Dino Game https://ift.tt/WjQfRs1

Show HN: Body Controlled 3D Dino Game Hey HN, I am Niko. I've built this 3D Dino Game In browser using tech like three.js and MoveNet (tensorflow). Basically, it's a normal 3D dinosaur game with a twist: you need to actually perform actions irl to avoid obstacles. Duck to crouch, jump to jump, raise left hand - go left, raise right hand - go right. Game is using your phone/laptop camera to track your body movements and perform in-game actions. PS. Game is 100% client side and I don't record/track/use/save any of your data Hope you find it worth playing. (better play on PC) It's a 100% FREE browser game with no login! Please feel welcome to DM feedback or reply or anything! https://ift.tt/80BcH4Q April 23, 2025 at 02:58PM

Show HN: Durable Python Workflows https://ift.tt/26SIXJU

Show HN: Durable Python Workflows https://ift.tt/5wkjYis April 23, 2025 at 04:11AM

Show HN:[Opensource] AIgr.id–Polycentric Infrastructure for Open and Plural AI https://ift.tt/XJGSg1l

Show HN:[Opensource] AIgr.id–Polycentric Infrastructure for Open and Plural AI Hey HN! I'm Kanishka Nithin, founder of AIGr.id ( https://www.aigr.id ). We’re building AIGr.id — a polycentric network of independent, modular AI that can coordinate, exchange data, and compose into higher-level intelligence — all within a decentralized and plural ecosystem. Rings collective intelligence? In simpler terms: We’re trying to make it possible for people to produce, remix, operate, distribute and consume AI systems the way we use the internet— openly, collaboratively, and without needing to centralize everything into one mega-model owned by one mega-entity. Just like internet of intelligence. Today’s AI landscape is: Centralized, resource-heavy systems demand vast funding, compute, and talent—excluding much of the world. Controlled by a few powerful actors prioritizing profit over public good. Participation is limited, deepening inequality in AI benefits. Fragmented and siloed, with no open protocols for AI coordination We believe it's time to reimagine AI as collective intelligence, as shared commons — poly-centric, collaborative, composable, inclusive, and guided by values beyond profit. What’s different about our approach is that we’re not trying to build “the one true model” — we’re trying to make it easier for people to build, remix, run, and govern their own AI systems, together. We want a world where AGI doesn’t have to be monolithic — where different models, agents, and collectives can evolve side by side, coordinate, and even argue if they need to. Plural, by design. At the core of AIGr.id is OpenOS.AI, a distributed AI operating system. It is a full stack AIOS that spans everything from low-level compute orchestration to higher-level cognition, coordination, governance and economic policy. Think of it as a programmable substrate for building and running decentralized AI systems — across any infrastructure, in any topology. Developers can use shared protocols, primitives, and templates to compose AI systems — models, agents, cognitive workflows — and plug them into running grids. These grids can be public, private, federated, or even permissionless. Each grid can maintain its own sovereignty (values, rules, trust mechanisms), but still remain interoperable with others. It's designed for a world where we expect many intelligences to coexist, rather than one model to rule them all. We’re in beta and will be kicking off more extensive scale testing during our upcoming testnet phase. If this scratches an itch for you, or just want to jam on open systems — we’d love your feedback. If you're interested in joining the testnet, you can join our discord @ https://ift.tt/nfixAUg — we’d be excited to have you involved early. Docs, GitHub, and the paper are all linked at https://www.aigr.id Curious what you think — critiques, weird use cases, edge cases, counterpoints — all welcome. Our own background is what pushed us into this problem. Before this, we were a 4-person crew running one of the largest real-time AI inference workloads in India. We were doing around 500K inferences/sec across 80–90 models simultaneously, supporting 35+ public-sector use cases — mostly video analytics. We were operating across federated and private infrastructure in real time, processing millions of frames per second. We didn’t rely on cloud providers or commercial frameworks. Our market was distorted by deprioritized infrastructure investment and choosing to grow within our earnings means the only way to survive was by being ruthlessly efficient: creating frameworks that automated end to end production, operation, distribution and maintenance life cycle of AI -- everything at scale reliably without or with minimal human intervention — so four of us could actually live our lives, too. So in a way, AIGr.id was born out of necessity. It's the system we wish we had — one that treats intelligence as something modular, networked, composable, orchestratable, shareable, and governable – in a collective way. https://www.aigr.id April 22, 2025 at 11:13PM

Show HN: I made TypeScript's type inference more strict (and smarter) https://ift.tt/MbiPZXW

Show HN: I made TypeScript's type inference more strict (and smarter) As a TypeScript developer, I often found myself wishing the type system could do more—*especially when omitting or modifying deeply nested properties* inside complex objects and arrays. For instance, what if I want to remove a deeply nested field like `user.profile.email` and also something like `user.posts[ ].meta.shares` from a type? TypeScript doesn't really provide a built-in way to do that. So I built *DeepStrictTypes* — a utility that lets you *omit deeply nested keys*, even inside arrays, with full type inference and strictness. Here’s an example: ```ts type Example = { user: { id: string; profile: { name: string; age: number; email: string; }; posts: { title: string; content: string; meta: { likes: number; shares: number; }; }[]; }; }; // Remove 'user.profile.email' and 'user.posts[ ].meta.shares' type Omitted = DeepStrictOmit< Example, 'user.profile.email' | 'user.posts[*].meta.shares' >; ``` The resulting type: ```ts { user: { id: string; profile: { name: string; age: number; }; posts: { title: string; content: string; meta: { likes: number; }; }[]; }; } ``` Works great for: - Cleaning up types for API responses - Dynamically transforming deeply nested data - Improving type safety when handling structured JSON [ https://ift.tt/X2FrN68 ]( https://ift.tt/X2FrN68 ) Would love your feedback or ideas for improvements! https://ift.tt/yFqxuiR April 22, 2025 at 09:17AM

Show HN: Prompt Coded 3D Asteroids https://ift.tt/vtdwRsq

Show HN: Prompt Coded 3D Asteroids https://ift.tt/njHsJOT April 22, 2025 at 04:25AM

Show HN: ArTok is TikTok for research papers https://ift.tt/y9jnxFW

Show HN: ArTok is TikTok for research papers Hello everyone! I always found it hard to find new research papers outside of my usual bubble. I thought a random feed (with no recommendation algorithms) might be a fun way to explore. But I also didn’t want to waste time on completely unrelated stuff — so the idea of a fast, swipeable format came to mind. Wikitok was a real inspiration! But Arxiv and Open Review APIs weren’t as robust as Wikipedia, so I pulled the papers into a Postgres backend. Right now, I’ve indexed papers from a few recent ML conferences to see if this might be useful for others too. No signups required and it’s totally free. You can mark your favorites and add text annotations, which are saved on your device. Would love to hear your feedback! https://artok.app April 22, 2025 at 12:43AM

Show HN: Open Codex – OpenAI Codex CLI with open-source LLMs https://ift.tt/xiF3XRC

Show HN: Open Codex – OpenAI Codex CLI with open-source LLMs Hey HN, I’ve built Open Codex, a fully local, open-source alternative to OpenAI’s Codex CLI. My initial plan was to fork their project and extend it. I even started doing that. But it turned out their code has several leaky abstractions, which made it hard to override core behavior cleanly. Shortly after, OpenAI introduced breaking changes. Maintaining my customizations on top became increasingly difficult. So I rewrote the whole thing from scratch using Python. My version is designed to support local LLMs. Right now, it only works with phi-4-mini (GGUF) via lmstudio-community/Phi-4-mini-instruct-GGUF, but I plan to support more models. Everything is structured to be extendable. At the moment I only support single-shot mode, but I intend to add interactive (chat mode), function calling, and more. You can install it using Homebrew: brew tap codingmoh/open-codex brew install open-codex It's also published on PyPI: pip install open-codex Source: https://ift.tt/kjmZxN5 https://ift.tt/kjmZxN5 April 21, 2025 at 11:27PM

Show HN: TikTrotter – TikTok but for obscure travel trivia to beat doomscrolling https://ift.tt/oukqwhl

Show HN: TikTrotter – TikTok but for obscure travel trivia to beat doomscrolling I'm trying to stop doomscrolling social media, so I made a website to help me. I'm a huge traveler so I made a website that shows infinitely-scrolling obscure locations with interesting trivia in a TikTok-like manner. I've been discovering a lot of cool places in the world and dropped my social media time a lot. The website is 100% free, no ads and no sign-up. Check it out if interested, I would appreciate some feedback. Next step is to create a multiplayer trivia game where you can challenge your friends and see who knows more about the world. https://ift.tt/qm9blX3 April 20, 2025 at 09:34PM

Show HN: MidiMaker.pro – Generate structured MIDI music from text using LLMs https://ift.tt/RHN2kY3

Show HN: MidiMaker.pro – Generate structured MIDI music from text using LLMs https://midimaker.pro/ April 20, 2025 at 11:28PM

Show HN: FlowG v0.32.0, Added support for OpenTelemetry logs collection https://ift.tt/eQ6Knu3

Show HN: FlowG v0.32.0, Added support for OpenTelemetry logs collection https://ift.tt/9jdGInR April 20, 2025 at 02:39AM

Show HN: Ibex – a cross-platform iOS backup decryption tool https://ift.tt/QFivdY4

Show HN: Ibex – a cross-platform iOS backup decryption tool ibex is a cross-platform tool designed for decrypting and extracting iOS backups. It provides forensic investigators, security researchers, and power users with the ability to access and analyze encrypted iOS backup data. It can be built and used on macOS, Linux, and Windows and is permitted to be used only with the explicit and informed consent of the backup data owner. Ibex was written in Go for straightforward compilation and to circumvent dependency issues and with the goal of enabling researchers and defenders assisting civil society victims of spyware and stalkerware Key Features - Decrypt encrypted iOS backups - Support for latest iOS versions - Cross-platform compatibility (macOS, Windows, Linux) - Automatic backup detection - Single file extraction based on filename match - Structured output organization - Detailed manifest parsing and extraction Basic Usage Examples # Run with automatic backup detection and interactive mode ibex # Specify just the backup path ibex -b /path/to/backup # Specify backup path and password ibex -b /path/to/backup -p "backup_password" # Specify custom output directory ibex -b /path/to/backup -p "backup_password" -o /path/to/output # Specify a single file for decryption and extraction ibex -b /path/to/backup -o /path/to/output --file sms.db # Specify relative path preserved output ibex -b /path/to/backup -o /path/to/output -r https://ift.tt/ebB9pYo April 19, 2025 at 11:10PM

Show HN: New world record – verified Goldbach Conjecture up to 4*10^18+7*10^13 https://ift.tt/jFCVoNG

Show HN: New world record – verified Goldbach Conjecture up to 4*10^18+7*10^13 Achieved a new world record in verifying the Goldbach Conjecture using grid computing, by extending the verification up to 4 quadrillion (4×10¹⁸) + 70 trillion (7×10¹³). My grid computing system - Gridbach is a cloud-based distributed computing system accessible from any PC or smartphone. It requires no login or app installation. The high-performance WASM (WebAssembly) binary code is downloaded as browser content, enabling computation on the user’s browser. [Website] https://gridbach.com/ [Medium] https://ift.tt/Txdo294... https://ift.tt/kdnDSxu April 19, 2025 at 11:41AM

Show HN: I made a game using mazes generated by ChatGPT https://ift.tt/JaxdUPD

Show HN: I made a game using mazes generated by ChatGPT https://ift.tt/z7XRP5E April 19, 2025 at 04:29AM

Show HN: Dirb – Directory in Bio https://ift.tt/uQ8XpDj

Show HN: Dirb – Directory in Bio Dirb lets you build a personal profile, organize links into rich, shareable lists, and automatically pull metadata and embeds. With built-in analytics, you can track clicks, views, and visits. It's made for creators, entrepreneurs, and professionals. Let me know what you think. I appreciate any feedback! https://dirb.io April 19, 2025 at 12:42AM

Show HN: Weblook – a headless webapp screenshot tool written in Rust https://ift.tt/oC5iHuR

Show HN: Weblook – a headless webapp screenshot tool written in Rust I basically created this for another project I was working on and want a visually consistent track of changes to train a model against for web-app testing validation. https://ift.tt/XZIPdHK April 18, 2025 at 02:03AM

Show HN: HN Watercooler – listen to HN threads as an audio conversation https://ift.tt/sPapdq4

Show HN: HN Watercooler – listen to HN threads as an audio conversation Hi HN, here's something fun to play with. It takes any HN thread and turns it into an audio conversation so you can listen to the thread while doing other things. I've seen many previous attempts to turn HN threads into podcasts, but they all shared a common issue IMO: trying to reduce the very rich back-and-forth into a single-thread single-reader boring podcast. Instead, I wanted to hear the actual debate from the actual thread! So I asked Claude 3.7 to build this for me as a browser-only app. It just needs a thread URL and an Elevenlabs API key (this all remains in your browser, you can check the source code, it's only 3 files, there is no server storage of anything). To make the resulting audio experience as natural as possible, each commenter has a different voice. Commenters who appear multiple times in the thread have the same voice, and introduce themselves. A bit of context is also introduced when coming back "up" from deeply nested comments. You can play the resulting audio or download it for later listening. I'm planning to later add the ability to load multiple threads so I can have a playlist generated for listening in the gym! Any comments or improvement suggestions are appreciated! https://ift.tt/G6lQn7x April 18, 2025 at 12:24AM

Show HN: Zuni (YC S24) – AI Copilot for the Browser https://ift.tt/73P6htu

Show HN: Zuni (YC S24) – AI Copilot for the Browser Hi HN, I'm Will, and along with my co-founder George, we've built Zuni ( https://zuni.app ) - a browser extension that adds contextual AI capabilities to your browser. It understands what you're reading and working on, whether that's email, research, or anything else in your tabs. We started out building a full email client with AI built in (you might have seen that version showcased in YC’s AI Design Review - https://www.youtube.com/watch?v=DBhSfROq3wU&t=1601s ), but learned that people don't actually want to leave their existing tools - they just want them to work better. Gmail might be frustrating, but it has years of features people rely on. So we pivoted to enhance the tools people already use, rather than replace them entirely. Some specific things Zuni does today: - Analyzes emails as you read them in Gmail, identifying action items and suggesting possible responses - Lets you discuss how to handle tricky emails, almost like having a thought partner - Maintains context across your browsing session so you can ask follow-up questions naturally - Runs locally first for speed and privacy - Doesn't store chats, emails or anything sensitive in the cloud We're still early and focusing on getting the core experience right before adding more integrations. The goal is to make AI actually useful in your daily work, rather than just another "AI feature" checkbox. Would genuinely love feedback from the HN community - what would make this truly useful for your workflow? What are we missing? Happy to answer any questions about the technical implementation too. https://zuni.app April 17, 2025 at 08:45PM

Show HN: We made a VS Code extension to recreate a debugger experience from logs https://ift.tt/zIGldTC

Show HN: We made a VS Code extension to recreate a debugger experience from logs A month ago [1], we made an MCP server so Cursor can debug Node.js on its own. We emailed every person that starred our repository [2] and learnt that frontend devs really want to give Cursor access to browser logs, and that backend devs (our intended audience) do not use debuggers nearly as much as we thought. We interviewed friends across startups and discovered that they use logs to debug, because they can’t run services locally on their machine. The services (1) require too much disk, RAM, or CPUs to run locally, (2) have too many service dependencies (think microservices), or (3) are a faff to instantiate locally with a debugger. Instead, our friends instrument their services, deploy them to staging environments via Kubernetes, and then query the logs via data stores (think Grafana, Axiom.co, Google Cloud Logging, etc) or directly (think Kubernetes logs). We thought: "What if we could recreate a debugger-like experience from logs?". That would save them from browsing logs and trying to make sense of them outside the context of the code base. We looked into it and made a VS code extension that lets you (1) import logs, (2) go to the line of code associated with a log, and navigate up/down the probable call stack associated with a log. It's a prototype, but if you're interested in trying it out, we'd love some feedback! GitHub: github.com/hyperdrive-eng/traceback --- References: [1]: https://ift.tt/iKqmxyp [2]: 140 Github stars, 69 emails sent (the rest were bots), 19 responses received (= 28% response conversion), 4 meetings held (= 21% meeting conversion). https://ift.tt/4AiC2my April 17, 2025 at 04:37AM

Show HN: Milter in Rust to Add Headers https://ift.tt/uXIAmbK

Show HN: Milter in Rust to Add Headers Here's a milter in Rust that adds List-Unsubscribe headers. It creates a URL that has encoded email-from, rcpt-to and a HMAC SHA 256 verification hash using a shared secret key. Possibly it improves delivery of newsletters and transactional emails. https://ift.tt/5n9Ooyd April 17, 2025 at 02:22AM

Show HN: Particle - News, Organized https://ift.tt/xBRduWl

Show HN: Particle - News, Organized Hello HN! Particle News product engineer here. Keeping up with the news is overwhelming in an age of information overload. Particle reimagines the experience by organizing articles into comprehensive "Stories," offering clear, concise summaries to quickly grasp what matters. Today, we reached the #1 spot in "Newspapers & Magazine" on the iOS App Store—and I thought I'd share a bit of our backstory. I've been connected to this team for a long time. About 20 years ago, I shared a house with our CTO and co-founder Marcel Molina. I helped him get started with programming. Since then, Marcel has had an extraordinary career—becoming a senior staff engineer at Twitter, where he helped build foundational features like Retweets, Notifications, and Lists, and later working at Tesla on manufacturing execution systems that scaled across Gigafactories. At Twitter, Marcel worked closely with our CEO and product visionary Sara Beykpour, who led initiatives like Twitter Blue, Twitter Video, and the experimental app twttr . Sara has a background in Software Engineering and Cognitive Science from the University of Waterloo and spent over a decade at Twitter in engineering and leadership roles. In late 2022, Sara and Marcel started prototyping a news app that could reduce the cognitive and emotional burden of staying informed—by using AI to help people understand more, faster. They were soon joined by a few other former Twitter colleagues who helped shape the early concept into a working iOS application. I joined about 15 months ago to contribute across the entire stack. Since then, I've helped design and build major iOS features, rewritten our public website on Cloudflare Workers, and implemented new functionality in our Go backend, which is driven by Google Cloud's Pub/Sub architecture. What Makes Particle News Different Particle helps you navigate the news effortlessly—leveraging AI to help you understand more, faster. Some highlights: • Personalized News – Your feed is tailored to your interests. You can follow specific people, places, and things so you never miss what matters to you. • Clear Summaries – Get a quick overview or dive deeper with detailed, structured context—summarized in natural language. • Perspective Tools – Features like "Opposite Sides" and our political spectrum chart let you explore stories through multiple lenses. • Interactive Q&A – Ask questions about any story and get concise answers with sources and citations. • Audio Summaries – Use the "Play" feature to listen to your feed, specific stories, or even select articles—great for hands-free or on-the-go moments. One of the things we're most proud of is how Particle supports publishers. We've partnered with outlets like Reuters, AFP, and Fortune to host some of their content via APIs. These partners get prominent placement, and their links are highlighted in gold to stand out. This model aims to drive traffic back to publishers and reward high-quality journalism, rather than just aggregating and commodifying it. Transparency is a core value: all sources are cited, generated answers are grounded in evidence, and we take real care to prevent AI hallucinations or misleading summaries. Despite negligible marketing spend, Particle has grown to the top of its category by focusing on engagement with early users and meaningful partnerships with the media ecosystem. Coming soon: weekday mini crosswords—a new feature designed by another longtime friend of ours from 20 years back who went on to work at Twitter, lead development on Firewatch, and release his own games independently. It's incredibly fun and rewarding to be building something meaningful with old and new friends. I feel lucky every day to work alongside some of the best product, design, and engineering minds on a project we hope will help people stay engaged with democracy without burning out. https://ift.tt/fSYiRlv April 16, 2025 at 02:56AM

Show HN: I made Python project template so you don't need to spend hours on it https://ift.tt/vL5NSbd

Show HN: I made Python project template so you don't need to spend hours on it https://ift.tt/DdN7WKE April 16, 2025 at 04:34AM

Show HN: Torque – A lightweight meta-assembler for any processor https://ift.tt/OhVIc8P

Show HN: Torque – A lightweight meta-assembler for any processor Hello everyone, I've been working on this project for the past few months. Torque is a meta-assembler: instead of having an instruction set built into the assembler, you use macros to build up a small language that decribes an instruction set and then you use that to write your program. It's designed to work for any microcontroller/processor architecture, you build from the bit level upwards so there aren't any assumptions around word widths, instruction formats, or endianness. I created Torque initially to write programs for a PIC microcontroller, after running into difficulties with the official assembler. I've also used it to write programs for the Z80 processor inside an old TRS-80 computer. Let me know if you try it out or have any questions! https://ift.tt/0goBcS5 April 16, 2025 at 03:16AM

Show HN: I asked Gemini2.5 pro to create a "bro version" of a stoic book https://ift.tt/5SLWeIc

Show HN: I asked Gemini2.5 pro to create a "bro version" of a stoic book https://ift.tt/J76gK5S April 15, 2025 at 11:06PM

Show HN: ActorCore – Stateful serverless framework that runs anywhere https://ift.tt/s3QuqwD

Show HN: ActorCore – Stateful serverless framework that runs anywhere TL;DR: ActorCore is a stateful serverless framework that can be deployed to Rivet, Cloudflare, Bun, Node.js and more. It's the easiest way to build stateful, AI agent, collaborative, or local-first applications. Hey HN! A few months ago we launched Rivet Actors ( https://ift.tt/dQ2YUpP ) as an open-source alternative to Cloudflare Durable Objects. Shortly after launching, we realized our goal is not to win over existing Durable Objects developers, but rather to grow the stateful serverless ecosystem. For context – "stateful serverless" is effectively the actor model with persistent state attached. Think Lambda functions with local storage & runs indefinitely. It's a a technology that’s gaining traction to ship faster, achieve higher performance, and outscale Postgres. The most widely used implementation is Cloudflare Durable Objects. In the process of talking to developers, we kept hearing three common concerns: - Vendor lock-in: Developers are hesitant to adopt a new programming model if there's no clear off-ramp. While it's straightforward to migrate a Postgres database, stateful serverless platforms like Rivet Actors or Durable Objects can feel locked-in due to lack of viable alternatives. - Ecosystem: Choosing a well-known database like Postgres comes with a mature ecosystem. Adopting a new model means rebuilding tooling and patterns from scratch. - Conceptual gap: Many developers have spent their entire careers designing systems with intentionally separated state and compute. A model that merges the two can feel backwards at first. After hearing these concerns again and again, we came to the conclusion that the best solution was to build a framework that works with as many platforms as possible to reduce lock-in (concern #1) and grow a shared ecosystem of tools (concern #2). It turns out, we already had a battle-tested framework built on top of Rivet Actors that we’ve been using for years. (It has a long, funky history beyond Rivet in gaming I won't get into here.) Thus, we split out the framework in to a new repo, added support for four platforms (easier said than done), and called it ActorCore. It gives developers multiple platforms to choose from when adopting stateful serverless and creates a foundation for a broader, cross-platform ecosystem. However, this still leaves concern #3: the conceptual gap. While this isn't something we can solve with a framework, I personally spend ~40% of my time working on docs, content, and examples to help resolve this. ActorCore is also panning out to be community-driven as hoped, which enables more people to try and share their experience with stateful serverless. Give ActorCore a try, read the roadmap, and let us know where we can improve documentation. If you're hesitant about trying stateful serverless, I'd love to learn more in the comments. Consider giving us a star on GitHub: https://ift.tt/GpWVUu7 https://ift.tt/CwRDHy4 April 14, 2025 at 08:27PM

Show HN: I made a math puzzle game. Hope you like it https://ift.tt/adxIq3F

Show HN: I made a math puzzle game. Hope you like it I've been playing with this for quite some time and I think it's finally ready for public consumption. All feedback welcome. https://ift.tt/w5kRahT April 11, 2025 at 11:56PM

Show HN: Cigarette – a Safari extension that hides ads on X, Reddit, & LinkedIn https://ift.tt/n8KVT47

Show HN: Cigarette – a Safari extension that hides ads on X, Reddit, & LinkedIn https://ift.tt/wGV1yri April 14, 2025 at 12:14AM

Show HN: Crystal, the most accurate U.S. gov't data search tool https://ift.tt/OKzpnHe

Show HN: Crystal, the most accurate U.S. gov't data search tool Hi everyone! We're relaunching Crystal, which lets you search and analyze 300k+ government datasets using plain English. For example, prompting "Air quality since 2020 in NYC" will find the most relevant datasets for you. We find it's way better than any search tool out there today, like data.gov. We're hoping anyone who uses public data as a resource, like researchers, consultants, journalists, etc. will find it helpful. Crystal is straightforward - it's in alpha, so there's only a few queries per person, and the app itself is in its infancy. We're invested in making this better for people, and we'd love feedback + beta signups - you can provide either via https://ift.tt/35pbhZz or down below! If you'd like to partner with us more closely or have other thoughts, please email us at cedric@crystal.info or ari@crystal.info https://ift.tt/PQtY7v9 April 13, 2025 at 11:53PM

Show HN: AI quiz generator from any topic or book in seconds https://ift.tt/JvyjDw2

Show HN: AI quiz generator from any topic or book in seconds https://www.wiyomi.com April 10, 2025 at 10:57AM

Show HN: Downr – An All-in-One Social Media Downloader for 50 Platforms https://ift.tt/bId7TEz

Show HN: Downr – An All-in-One Social Media Downloader for 50 Platforms https://downr.org April 12, 2025 at 04:36PM

Show HN: OctAPI – Visualize API Routes Directly in VS Code https://ift.tt/KmhbkHp

Show HN: OctAPI – Visualize API Routes Directly in VS Code Started noticing issues while working with friends that I thought only I was encountering: spending too long manually adding routes to postman, getting lost looking for a single route in the sea of files and thought Hey, I can fix that (I think?) So OctAPI is a VSCode extension that automatically detects and displays API routes from a local project (currently supports Express.js, NestJS, Next.js, Koa, Flask, and FastAPI), it filters and groups them, generates a Postman export JSON file, and adds to favs. It doesn't run your code and it all stays in your machine A friend literally screamed when they were live testing it for me lol It's open source ( https://ift.tt/LJnNIAD ) and here's its landing page ( https://ift.tt/G6ObNMy ) I'm hoping to add custom tags, more frameworks support and even AI features. https://ift.tt/oeHEUMF April 13, 2025 at 01:48AM

Show HN: memEx, a personal knowledge base inspired by zettlekasten and org-mode https://ift.tt/nxC1lPv

Show HN: memEx, a personal knowledge base inspired by zettlekasten and org-mode https://ift.tt/szfmOtg April 13, 2025 at 12:32AM

Show HN: Pg_CRDT – CRDTs in Postgres Using Automerge https://ift.tt/CerG4JI

Show HN: Pg_CRDT – CRDTs in Postgres Using Automerge https://ift.tt/iE0TKG3 April 11, 2025 at 10:23PM

Atari Missile Command Game Built Using AI Gemini 2.5 Pro https://ift.tt/HS2a4cA

Atari Missile Command Game Built Using AI Gemini 2.5 Pro https://ift.tt/fp9W40M April 7, 2025 at 11:48AM

Show HN: Lunon – Instant model switching across LLMs https://ift.tt/867is5M

Show HN: Lunon – Instant model switching across LLMs Hey HN! We built Lunon to make LLM development way less of a headache. Ever wanted to see how different models handle the same prompt without all the setup hassle? That's what we fixed. Our API lets you compare Claude, GPT, Mistral and others in real-time with just a few lines of code. No more complex infrastructure or managing multiple API connections - we handle all that boring stuff behind the scenes. Plus, you can cut costs by intelligently routing requests to the right model for each task. Use the powerful (expensive) models only when you really need them. If you're building with LLMs and tired of the integration headaches, would love to hear feedback! https://lunon.com/ April 11, 2025 at 11:46PM

Show HN: I built a tool to manage and compare credit card rewards https://ift.tt/GhxUPTX

Show HN: I built a tool to manage and compare credit card rewards This is a free tool that helps you manage and visualize your credit card rewards across different categories. You can input the cards in your wallet and see how they complement each other, spot gaps in your setup, and also see the best card to use for a given merchant. I’m also a founder at OneCard, where we’re building a smart card that’ll eventually handle all of this automatically, routing each purchase to the best card in real-time. Would love feedback from the HN community! https://ift.tt/GaX07MN April 11, 2025 at 02:54AM

Show HN: Calculate confidence score for OpenAI JSON output https://ift.tt/8qmcKjE

Show HN: Calculate confidence score for OpenAI JSON output https://ift.tt/xKG3dZu April 10, 2025 at 08:46PM

Show HN: I built an app that reduces podcast preparation effort by 95% + https://ift.tt/VFYWxjM

Show HN: I built an app that reduces podcast preparation effort by 95% + https://ift.tt/mHaKzht April 10, 2025 at 11:22PM

Show HN: Obelisk – a WASM-based deterministic workflow engine https://ift.tt/L4heV5C

Show HN: Obelisk – a WASM-based deterministic workflow engine A lightweight engine for durable execution / deterministic workflows I built with Rust, wasmtime and the WASM Component Model. Its main use is running reliable, long-running workflows that can automatically resume after failures. Looking for feedback on the approach and potential use cases! https://obeli.sk/ April 10, 2025 at 12:54AM

Show HN: Repo Roast – a real-time feed of the funniest comments on GitHub https://ift.tt/jTJsgWR

Show HN: Repo Roast – a real-time feed of the funniest comments on GitHub Hey HN - I'm Mason, and I'm excited to share a fun side project I've been working on recently: Repo Roast. For me, Github often feels like a serious (and sometimes soulless) place. I built this website to showcase the human, silly side of developers. Repo Roast is built on top of LLM-powered GitHub analytics tooling we’re developing internally at Merit Systems [0]. One of the historically cited weak points for LLMs has been their sense of humor. I found that with the right prompt, at scale, they mostly can _identify_ humor pretty well. We experimented with a couple of different models to tune the cost/effectiveness and eventually landed on a strategy where we have gpt-4o-mini do a very light filter pass to reduce the number of calls to GPT-4o to do the actual humor scoring. Interestingly, our first prompt attempts ended up surfacing wayyy more aggressively NSFW content, which is funny that this happens despite all the censoring that OpenAI is doing. So far we have processed the last 90 days of historical comments and continuously process new ones every hour. We theoretically can run this against a wider historical window given there is sufficient interest to justify the costs! Repo Roast is in no way intended to make you a better or more productive dev. You can use it as a leaderboard or hiring tool (if you’re looking for personality), or just a way to distract yourself! If you've had any funny Github interactions, I'd love if you shared them below. Cheers! --Mason [0] https://ift.tt/gbWsXQu https://ift.tt/yMjqRnN April 10, 2025 at 12:40AM

Show HN: Aqua Voice 2 – Fast Voice Input for Mac and Windows https://ift.tt/kSFuZUa

Show HN: Aqua Voice 2 – Fast Voice Input for Mac and Windows Hey HN - It’s Finn and Jack from Aqua Voice ( https://withaqua.com ). Aqua is fast AI dictation for your desktop and our attempt to make voice a first-class input method. Video: https://ift.tt/o3IHVuG Try it here: https://ift.tt/X6mExOb Finn is uber dyslexic and has been using dictation software since sixth grade. For over a decade, he’s been chasing a dream that never quite worked — using your voice instead of a keyboard. Our last post ( https://ift.tt/DOWXZNP ) about this seemed to resonate with the community - though it turned out that version of Aqua was a better demo than product. But it gave us (and others) a lot of good ideas about what should come next. Since then, we’ve remade Aqua from scratch for speed and usability. It now lives on your desktop, and it lets you talk into any text field -- Cursor, Gmail, Slack, even your terminal. It starts up in under 50ms, inserts text in about a second (sometimes as fast as 450ms), and has state-of-the-art accuracy. It does a lot more, but that’s the core. We’d love your feedback — and if you’ve got ideas for what voice should do next, let’s hear them! https://withaqua.com April 9, 2025 at 10:01PM

Show HN: I built a tool that deconstructs websites to reveal their tech stack https://ift.tt/E0S5bsu

Show HN: I built a tool that deconstructs websites to reveal their tech stack Hi HN, I built https://unbuilt.app to solve a problem I frequently faced as a developer: identifying the technology stack behind websites, especially those using newer frameworks and tools. While existing solutions rely on pre-saved data or signature databases, Unbuilt performs a fresh analysis by actually loading and examining the website code in real-time. This means it can detect cutting-edge technologies that often get missed by other analyzers. Technical details: - Uses Playwright to visit sites and analyze their resources - Queue-based architecture for handling concurrent requests - Optimized patterns for detecting modern frameworks (Next.js, Vite, React Compiler, etc.) - Dual-layer caching system for both performance and result sharing The tool is completely open-source and free to use. There are no premium tiers or usage limits. I built it because I believe developers deserve better tools for understanding the web ecosystem. I'd appreciate any feedback, particularly on detection accuracy and the types of technologies you'd like to see added. If you're interested in contributing, all pattern detection logic is designed to be easily extensible. Link to repo: https://ift.tt/wo0x69Z https://unbuilt.app/ April 9, 2025 at 10:57PM

Show HN: My mom was unimpressed with my blog. What do you think? https://ift.tt/j5WQ16k

Show HN: My mom was unimpressed with my blog. What do you think? I recently launched my personal tech blog and proudly showed it to my mom. Her response? "It's... fine." Now I need your brutally honest feedback! Blog URL: https://simonaking.com Github: https://ift.tt/bhscdoP PS: Every visitor gets my mom one step closer to understanding what I actually do for a living! https://simonaking.com/ April 9, 2025 at 11:30AM

Show HN: DrawDB – open-source online database diagram editor (a retro) https://ift.tt/bR8OtP4

Show HN: DrawDB – open-source online database diagram editor (a retro) One year ago I open-sourced my very first 'real' project and shared it here. I was a college student in my senior year and desperately looking for a job. At the time of sharing it i couldn't even afford a domain and naively let someone buy the one i had my eyes on lol. It's been a hell of a year with this blowing up, me moving to another country, and switching 2 jobs. In a year we somehow managed to hit 26k stars, grow a 1000+ person discord community, and support 37 languages. I couldn't be more grateful for the community that helped this grow, but now i don't know what direction to take this project in. All of this was an accident. But now I feel like I'm missing out on not using this success. I have been thinking of monetization options, but not sure if I wanna go down that route. I like the idea of it being free and available for everyone but also can't help but think of everything that could be done if committed full-time or even had a small team. I keep telling myself(and others) i'll do something if i meet a co-founder, but doubt and fear of blowing this up keeps back. How would you proceed? https://www.drawdb.app/ April 9, 2025 at 05:50AM

Show HN: Chat with any GitHub repository via MCP https://ift.tt/2dOwkWR

Show HN: Chat with any GitHub repository via MCP https://ift.tt/mjIOTFa April 9, 2025 at 12:00AM

Show HN: Soundscapes and Lofi Player https://ift.tt/vORX4gH

Show HN: Soundscapes and Lofi Player Hello HN! I would like to share my website which lets you play soundscapes and lofi music. All the sounds are in the public domain. GitHub repo: https://ift.tt/YXtuA7q https://ift.tt/k67XgnC April 7, 2025 at 10:56PM

Show HN: nix-mcp-servers – MCP server Nix package repo https://ift.tt/ycVsO39

Show HN: nix-mcp-servers – MCP server Nix package repo Started a collection of nix packages for some MCP servers I use. Makes installation into a NixOS-based system easy; also allows for running binaries straight from the flake on any Linux/macOS systems with nix installed. This can be convenient for MCP servers like `github-mcp-server` written in Go that aren't runnable using `uvx` or `npx`. https://ift.tt/IOv9tqC April 7, 2025 at 11:23PM

Show HN: I created a ELI5 Blockchain glossary, with also a bit of interactivity https://ift.tt/cCYmr7B

Show HN: I created a ELI5 Blockchain glossary, with also a bit of interactivity The reason is simply that I'm learning blockchain and i found myself searching and hardly recalling terminology. So I started building a glossary (that slowly i'm making interactive) in which the terms are explained with ELI5 analogies. AI helped me with that. Hope you find it useful. You can contribute to the data set here: https://ift.tt/TUnNpx9 https://ift.tt/5QJAGpC April 6, 2025 at 10:40PM

Show HN: A fast, minimal and offline-friendly web playground https://ift.tt/MWUjAvq

Show HN: A fast, minimal and offline-friendly web playground I built a web-based HTML/CSS/JS editor focused on speed, simplicity, and offline access. No bloat — just open and start coding. What makes it different: Live Preview – Edit HTML, CSS, and JS side-by-side with instant feedback. Offline support – Works without internet. You can even install it as a PWA and use it like a native app. No Login Required – Just visit, code, and preview. Login only if you want to save/share. Savable & Shareable Links – Save scripts in the cloud and get shareable links. Customizable Editor – Themes, fonts, auto-format on save, layout tweaks, line wrapping, etc. Hotkey Support – Power user shortcuts with tooltips showing keybinds. Download as ZIP – Export your project with HTML/CSS/JS files separated. Ideal for tinkering, prototyping, teaching, or even building micro-tools. It’s intentionally simple and fast — more features coming soon. Try a sample snippet: https://ift.tt/yNQaObY https://ift.tt/Onimhj6 April 7, 2025 at 01:55AM

Show HN: Latitude.sh Databases – Simple PostgreSQL DBaaS on Bare Metal https://ift.tt/XHelCbk

Show HN: Latitude.sh Databases – Simple PostgreSQL DBaaS on Bare Metal Hi HN, Gabriel here, one of the developers at Latitude.sh (we're a bare metal cloud provider). Over the past year or so, I've been the primary developer building Latitude.sh Databases – our take on a managed PostgreSQL service. The core idea was to offer a straightforward and competitively priced option for developers who need reliable PostgreSQL without overly complex configurations, leveraging the performance benefits of running directly on bare metal. It runs on our global bare metal infrastructure. Key features we've implemented include: * Built-in monitoring & connection pooling * IP Address Whitelisting (Trusted Sources) * Automated backups configured directly to your own S3 bucket (giving you control over storage and potentially costs) * An optional integration with Supabase, allowing you to use parts of their dashboard for enhanced usability with your database. Under the hood, it's built on Kubernetes running on our bare metal servers, using the CloudNativePG operator to manage the PostgreSQL instances. We've found this operator approach works well for handling stateful database workloads in K8s, challenging the old notion that databases don't belong there. The service stemmed from internal needs and early interest gathered from a waitlist (~300 signups). It's currently live and available for use. We're launching it here on HN because we'd genuinely appreciate your feedback on: * The overall developer experience and UI simplicity. * The current feature set (especially the S3 backup and Supabase integration). * Performance perceptions (given the bare metal base). * Our pricing model's competitiveness and clarity. * Any technical aspects of the implementation (running PG on K8s/bare metal). Happy to answer any questions you have! You can check out the product page here: https://ift.tt/UTs1LMq Thanks for looking! https://ift.tt/UTs1LMq April 6, 2025 at 11:30PM

Show HN: I Made a No-Code Excel to HTML Table Maker https://ift.tt/VCkAEOD

Show HN: I Made a No-Code Excel to HTML Table Maker I built https://ift.tt/fwGp1rm as a no-code tool for anyone who wants to turn an Excel spreadsheet into a clean, responsive, filterable HTML table. I thought it could be particularly useful for freelance developers who need to quickly display lots of data without setting up the whole backend and table logic. No coding required Supports large spreadsheets (thousands of rows) Built-in advanced data filtering & sorting. Customizable layout and styling. Instant embed code for any website. It’s free for low-traffic sites and really simple to use — upload a spreadsheet, design your table, and paste the embed code anywhere. Would love your feedback, feature requests, or any bug reports! Try it here: https://ift.tt/fwGp1rm https://ift.tt/olgQbfJ April 6, 2025 at 02:44AM

Show HN: I made an AI Platform that gamifies applying to jobs https://ift.tt/ZjWFyqU

Show HN: I made an AI Platform that gamifies applying to jobs Hi there! I've created ApplyNinja, a platform that uses AI to help jobseekers apply to jobs faster and better. What differentiates ApplyNinja from the other "auto-apply" platforms is the trained AI model behind it. It learns from your resume and the jobs you apply to, and it provides better and better results. Currently, it serves as a helper for the entire application process: - Track & Monitor job applications - Generates Resume suggestions and highlights the parts that are not so good - Auto-fixes and generates a new resume based on the suggestions - Creates Cover Letters based on your resume and the job description - Generates Company Insights, scraping user reviews from Glassdoor, Indeed etc. - Generates Salary Insights so jobseekers have a negotiation leverage - Generates Technical Interview Questions based on the Job Description On top of all of this, it provides a gamified experience, because consistency is the key in applying to jobs. Me and my friends are using it daily and manage to land approximately 5-10 interviews/month as Software Engineers. I would really love any kind of feedback. Thank you very much! https://ift.tt/9X7cF20 April 6, 2025 at 12:09AM

Show HN: Experience iPhone's "Blob Keyboard" prototype from 2005 https://ift.tt/kUnvPlC

Show HN: Experience iPhone's "Blob Keyboard" prototype from 2005 Hi HN, I teach tech design history, and one of the key stories I cover is the development of the original iPhone keyboard by Ken Kocienda. Reading about it in his book "Creative Selection" is great, but I wanted my students (and now you!) to actually feel this step in the process. So, I built a web simulator of the "Blob Keyboard", Kocienda's very first attempt at a touchscreen keyboard that actually works, from September 2005: Try the Blob Keyboard: https://ift.tt/5Cxh7bw... - Tap for the middle letter - Swipe left or right for the side letters More on the github repo: https://ift.tt/bDjJ3EU The Blob Keyboard prototype emerged during a UX crisis for iPhone team (their software keyboard just didn't work at all, fingers being too big, and the Newton failure loomed over them), highlighting how innovation is rarely a straight path. It was developed on a tethered touchscreen display codenamed "Wallaby". To make this simulator as authentic as possible, I referenced images from Kocienda's book and even got direct feedback and guidance from Ken Kocienda himself on Bluesky. What to expect (or… what not to expect): This is a reconstruction of a very early prototype with limitations reflecting that specific moment. The goal was to test first if typing with accuracy was even possible, as all the rest was moot if it failed! It's NOT QWERTY: They were still hoping to get us out of QWERTY, but then familiarity won. No Backspace: You can't delete. No Cursor Movement: The text field is just a simple display. No Caps or Numbers: Only lowercase letters. No Smooth Animations: Keys just "pop" instantly when pressed. Kocienda noted that your eye fills in the gaps, giving a sense of movement. Best Experience: While it works with a mouse/trackpad on desktop, it's designed for touchscreens to better replicate the original Wallaby hardware interaction. Use it on your phone! This project aims to provide a tangible glimpse into a turning point moment in iPhone development and the iterative nature of design. It's like stepping back in time and trying out that early demo on Kocienda's desk. I would love to hear your reactions and thoughts on experiencing this piece of UI history! What other significant prototype do you wish you could experience? April 5, 2025 at 11:50PM

Show HN: Clawtype v2.1 – a one-hand chorded USB keyboard and mouse [video] https://ift.tt/bsdXwzi

Show HN: Clawtype v2.1 – a one-hand chorded USB keyboard and mouse [video] Written in Rust (embassy), running on a SparkFun ProMicro RP2040 board, with an MPU6050 gyroscope. Based on the Chordite idea from John W. McKown ( https://ift.tt/SbukKwW... ). Intended for use with XR glasses I recently bought. Currently my typing speed is still rather slow, but my skill is graduably improving and at a noticeable pace, and I can and do some vim coding in my hobby time. I plan to try and do a wireless (BLE) version next, hopefully running off a single AA NiMH battery. The code is at: https://ift.tt/ZisCQxJ https://www.youtube.com/watch?v=N2PSiOl-auM April 5, 2025 at 04:02AM

Show HN: SwiftHive – A Swift Package Registry for Faster Builds https://ift.tt/kCswTQd

Show HN: SwiftHive – A Swift Package Registry for Faster Builds Hi HN! I've built SwiftHive, a private Swift package registry that solves several pain points with Swift's dependency management. We drastically reduce build times, ensure reproducibility, and I'm actively looking for beta testers from the community. https://ift.tt/repKP3o April 5, 2025 at 03:00AM

Show HN: DuckDB Powered SQL Editor https://ift.tt/C139UDO

Show HN: DuckDB Powered SQL Editor Hi guys, I made an SQL editor that utilizes the duckDB engine to process your queries. As a result, the speed gains are +25% when compared to using any standard editor that connects through JDBC. I built this because I work on a small data team and we can't justify an OLAP database. Postgres is amazing but, if I try to run any extremely complex queries I get stuck waiting for several minutes to see the result. This makes it hard to iterate and get through any sort of analysis. That's when I got the idea to use duckDB's processing engine rather than the small compute available on my Postgres instance. I didn't enjoy writing SQL in a Python notebook and wanted something like dBeaver that just worked, so I created soarSQL. Try it out and let me know if it has a place in your toolkit! https://soarsql.com April 5, 2025 at 01:40AM

Show HN: I made an online free tool site https://ift.tt/kiaLjJA

Show HN: I made an online free tool site Hi HN! I've created [UFreeTools]( https://ift.tt/mwQeqSv ), a collection of developer utilities (60+ tools and growing) that's completely free, ad-free, and runs entirely in the browser. No data leaves your device - everything is processed locally. ## Background As a developer, I found myself constantly searching for simple utilities like JSON formatters, UUID generators, and color pickers. Most existing options were cluttered with ads, required sign-ups, or sent data to servers. I wanted clean, fast tools that respected privacy. So I built UFreeTools as a modern SPA using Vue 3 and Vite with: - 100% client-side processing for all tools - Progressive loading with dynamic imports (only load what you use) - Dark/light theme support - Offline capability for most tools - Responsive design that works well on mobile ## Technical Details Some of the more technically interesting implementations: - *JWT Debugger*: Uses WebCrypto API for verification of all common algorithms - *Symmetric Encryption*: Implements AES-GCM/CBC/CTR with PBKDF2 key derivation - *Image Processing*: Uses Web Workers for non-blocking operations on large images ## Lessons Learned The biggest challenges were: 1. *Performance optimization*: Some tools (like image processors) needed careful optimization to handle large files without freezing the UI 2. *Browser API limitations*: Working around browser restrictions for certain crypto operations 3. *Bundle size management*: Keeping the initial load small while supporting 60+ tools ## Future Plans I'm planning to add: - Tool configurations sync via local storage - More specialized tools for developers based on feedback I built it because I needed these tools myself, and I hope others find it useful. I'd love your feedback, especially on UX, tool suggestions, or if you find any bugs! [Try UFreeTools]( https://ift.tt/mwQeqSv ) https://ift.tt/mwQeqSv April 4, 2025 at 11:26PM

Show HN: Monkeys.zip – 3000 Monkeys on Typewriters https://ift.tt/OyISzju

Show HN: Monkeys.zip – 3000 Monkeys on Typewriters Hey HN! I posted this on April 1st when it launched, and though it didn't get traction here, it was a minor hit on reddit! Now that we've got a few thousand monkeys under our belt, wanted to give it another shot here! Happy to talk about the technical details of running the site - using supabase/postgres and constantly putting out fires from the traffic. https://monkeys.zip/ April 3, 2025 at 11:36PM

Show HN: Exponent, a collaborative AI programming agent https://ift.tt/ahe9BDM

Show HN: Exponent, a collaborative AI programming agent https://ift.tt/tO4NMpy April 3, 2025 at 12:23AM

Show HN: Bookmarklet to Add TOC to ChatGPT's Chats https://ift.tt/CP6iH58

Show HN: Bookmarklet to Add TOC to ChatGPT's Chats https://ift.tt/SxUMzN1 April 2, 2025 at 11:36PM

Show HN: Envkit (Not YC) – Painless developer onboarding into codebase https://ift.tt/QdvxEIN

Show HN: Envkit (Not YC) – Painless developer onboarding into codebase https://envkit.co/ April 2, 2025 at 01:32AM

Show HN: Calculation Hub: Every Calculation Tool You'll Ever Need https://ift.tt/x7qEYoV

Show HN: Calculation Hub: Every Calculation Tool You'll Ever Need Every Calculation Tool You'll Ever Need. Growing list of calculators, in a clean, simple design. https://ift.tt/cFqepwN April 1, 2025 at 08:48PM

Show HN: I built a CLI for one-command fullstack TypeScript projects https://ift.tt/ymFeDI5

Show HN: I built a CLI for one-command fullstack TypeScript projects I built a CLI for scaffolding TypeScript projects with Turborepo, React, and tRPC. It includes TanStack Router/Query, Tailwind, Hono/Elysia backends, Drizzle/Prisma ORMs, and more. npx create-better-t-stack@latest https://ift.tt/I1RsT4x April 1, 2025 at 11:49PM