BlogViral

Show HN: Build AI Agents in WhatsApp (Beta) https://ift.tt/74ifyEk October 1, 2025 at 02:25AM

Show HN: I got tired of spreadsheets, so I built a Python GUI to track invoices Hey HN, As a freelancer, I found myself spending time every month manually opening PDF and Word invoices, copying the details into a spreadsheet, and tracking payments. It was tedious and error-prone. I decided to build a simple desktop app to automate this. It's a GUI built with Python and Tkinter that points to a folder of invoices, parses the key details (invoice #, amount, date), and stores everything in a local SQLite database for tracking and analysis. It's been quite a time- and headache-saver for me. A Note on Simplicity & Caveats I'm sharing this in case it's useful to any other freelancers or businesses, but I want to be upfront about its limitations: The UI is very basic. It's built with vanilla Tkinter and is all about function over form. It's not the prettiest app, but it gets the job done. The core automation relies on a "patterns" feature that matches inv...

Show HN: Document extraction with human feedback loop About the feature: We built a tool for automatically assessing business health from complex management financial documents and bank statements. In order to get this working reliably, we had to iterate extensively on the prompts for the structured output at the field level. This led us to building a feature to allow users to improve them too, and with some context engineering, we have what we are calling “feedback loops”. Here is a 2 min demo https://www.youtube.com/watch?v=ZDNlEZydoXU How it works (video runs through these steps): 1. Create a target form for your extraction (AI helps create it) 2. Upload a document (choose from different models) 3. Review the quality of the extraction (and check the PDF citations) 4. If there are any mistakes, correct them and give feedback at the field level 5. Once you feel like you've seen enough errors and provided enough corrections, use the Feedback workflow to refine your field descriptio...

Show HN: Sculptor, the Missing UI for Claude Code Hey, I'm Josh, cofounder of Imbue. We built Sculptor because we wanted a great UI for parallel coding agents. We love Claude Code, but wanted to solve some of the problems that come from running multiple agents in parallel (ex: merge conflicts with multiple agents, reinstalling dependencies with git worktrees, Claude Code could deleting your home directory, etc). Sculptor is a desktop app that lets you safely run Claude Code agents by putting them in separate docker containers. This lets you use Claude without having to compromise on security or deal with annoying tool permission prompts. Then you can just tell Claude to keep running the code until it actually works. To help you easily work with containerized agents, we created “Pairing Mode”: bidirectionally sync the agent’s code into your IDE and test/edit together in real time. You can also simply pull and push manually if you want. We have some more cool features planned on our ...

Show HN: Agentsmd – Local preferences and templates for AGENTS.md Hi HN I built agentsmd for developers who use AGENTS.md but want a way to manage personal preferences and reusable templates on top of the canonical repo version. For example, I don’t want my agents to run npm run dev for Next.js. Another developer might want that step included. Those kinds of preferences should live in my local .agentsmd, not in the shared AGENTS.md. The standard only defines looking at AGENTS.md files, which are git-tracked, so this tool helps get around the problem. Ideally, the AGENTS.md standard should also look at local .agentsmd files to account for local preferences. I've already opened an issue: https://ift.tt/2jfEzlC I’d love feedback on: - How you separate personal vs. shared guidance in your projects - Whether templates like this would help in your workflow - What other features would make managing AGENTS.md easier Thanks for checking it out! https://ift.tt/MSXzglh September 30, 2025 at 0...

Show HN: Economic Curves Simulator: Armey and Laffer This web app simulates two key economic curves: the Armey curve (public spending vs. economic growth) and the Laffer curve (tax rates vs. consent to taxation). Both use quadratic models to illustrate inverted U-shaped relationships. Adjust parameters to explore different scenarios. https://julienreszka.github.io/economic-simulator/ September 29, 2025 at 11:30PM

Show HN: Every single torrent is on this website https://infohash.lol/ September 29, 2025 at 11:14PM

Show HN: Web Scraping Framework for Android https://ift.tt/2Dzx7lq September 29, 2025 at 07:57PM

Show HN: Automatically set real iOS alarms for calendar events I kept missing appointments and meetings because calendar notifications are too easy to ignore. Alarms, on the other hand, always break through silent mode/DND and force you to acknowledge them — but setting them manually every day was another chore. With iOS 26’s new AlarmKit, I built Beacon: it automatically syncs with your Apple Calendar and converts important events into real iOS alarms. You can define simple rules (like “only events with ‘Interview’ in the title” or “meetings with 3+ attendees”), and Beacon sets the alarms for you — no extra work required. Would love feedback! https://ift.tt/u4JwdNs September 29, 2025 at 08:11AM

Show HN: Swapple, a little daily puzzle on linear reversible circuit synthesis https://ift.tt/OpaYrVz September 28, 2025 at 07:42PM

Show HN: A Firefox extension to avoid distractions https://ift.tt/93OJldX September 29, 2025 at 12:40AM

Show HN: Built an MCP server using Cloudflare's Code Mode pattern Read this article by Cloudflare this morning https://ift.tt/hND9xCn the main argument being that LLMs are much better at writing typescript code than tool calls because they've seen typescript code many more times. HN Discussion: https://ift.tt/Iac0G2J https://ift.tt/S6NGniR Deno provides a great sandbox environment for Typescript code execution because of its permissions system which made it easy to spin up code that only has access to fetch and network calls. Stick an MCP proxy on top of that and you've got "CodeMode" (code intermixed with MCP tool calls) for more advanced workflow orchestration. https://ift.tt/Gn3r1FM There's a lot of things that can be improved here. Like a virtual file system for the agent to actually build up its solution instead of being forced to one shot the solution but the bones are there. https://ift.tt/Gn3r1FM September 28, 2025 at 11:23PM

Show HN: Blognerd – search posts, blogs and export OPML I indexed a lot of blogs and posts for another project so thought I'd put together a way to make them searchable and surf-able. Some things you can do with blognerd - search blogs and posts - surf blogs that are similar to other blogs - find posts similar to other posts - export RSS feeds as OPML, CSV It's rough around the edges and sometimes a bit janky, but would love feedback / ideas to make it (more) useful! Thanks! https://blognerd.app September 28, 2025 at 12:16AM

Show HN: NextMin – Schema-Driven APIs with Hot Reloading I’ve just deployed the official documentation site for NextMin → https://ift.tt/JKqihm4 NextMin is a developer toolkit designed to make schema-driven development fast and transparent. Some key features: Dynamic Schema System – instantly generate CRUD APIs from JSON schemas Admin Panel – React + Tailwind, live schema updates API Router – flexible, with JWT + API key authentication File Storage – S3-compatible upload support Hot Reloading – backend and frontend reload without restarts Monorepo Ready – plug-and-play with private npm packages New: you can try it directly in the NextMin Playground here: https://ift.tt/vKL2Whw I built this because I believe dev tools should be fast, adaptable, and not locked behind walls. Would love feedback from the community. https://ift.tt/JKqihm4 September 28, 2025 at 12:00AM

Show HN: Font Tester – Preview fonts on custom content I've been looking for new fonts to use for a new project, but there weren't any great tools for seeing how a particular serif font for headers would look with another sans font for paragraph text, so I built a tool that lets you compare, adjust, and tinker with the way you'd use a font in your specific project before downloading it/setting it up. This is only using the free Google fonts for now. If there are other open-source fonts I should add, let me know and I'll add them! https://fonts.tomhadley.link/ September 27, 2025 at 02:09AM

Show HN: FingerprinterJS – A tiny JavaScript library for browser fingerprints I made FingerprinterJS, a small library with no dependencies that creates browser fingerprints from signals like canvas, WebGL, audio, fonts, userAgent, and screen info. It’s written in TypeScript, lets you enable/disable collectors, add custom data, and includes a simple suspicious-activity score. Would love feedback. https://ift.tt/fd8qw4Y September 27, 2025 at 12:22AM

Show HN: Melange - pegging AI inference to the cost of the most expensive model https://mela.ng September 26, 2025 at 10:13PM

Show HN: Mockylla, a library that allows you to easily mock out ScyllaDB tests https://ift.tt/xXt2gOA September 26, 2025 at 03:30AM

Show HN: Data-Cent – Interactive CSV Visualization and Analysis in Your Browser https://ift.tt/MHlUwL1 September 26, 2025 at 02:32AM

Show HN: Aqtos – business OS for SMBs and teams Small businesses use 10+ apps to run their operations. CRM, project management, invoicing, team chat, reporting - all disconnected. Besides this, they don't have any system in place. That's why we offer much more than a SaaS PM tool, a business OS. Built specifically for 5-150 person teams (not enterprise bloat) Plug n play setup Priced like a single tool, replaces 5-7 Try it: aqtos.com Questions? Happy to answer anything about the tech stack, business model, or SMB pain points we're solving -> https://ift.tt/u2FEct4 https://aqtos.com/ September 25, 2025 at 10:17PM

Show HN: Plakar 1.0.4 – Open-Source Backup That's Fast, Encrypted, and Browsable It’s still young, but they are shipping fast, and it's open source. Anyone else playing with it? https://ift.tt/cvWJOMN September 25, 2025 at 12:37PM

Show HN: Dayflow – A git log for your day Hi HN! I've been building Dayflow, a macOS app that automatically tracks what you're actually working on (not just which apps you have open). Here's what it does: - It creates a semantic timeline of your day; - It does it by understanding the content on your screen (with local or cloud VLMs); - This allows you to see exactly where your time went without any manual logging. Traditional time trackers tell you "3 hours in Chrome" which is not very helpful. Dayflow actually understands if you're reading documentation, debugging code, or scrolling HN. Instead of "Chrome: 3 hours", you get "Reviewed PR comments: 45min", "Read HN thread about Rust: 20min", "Debugged auth flow: 1.5hr". I was an early Rewind user but rarely used the retrieval feature. I built Dayflow because I saw other interesting uses for screen data. I find that it helps me stay on track while working - I check it ever...

Show HN: Vibe Linking https://vb.lk/ September 24, 2025 at 11:40PM

Show HN: A UI Library for the Web Focusing on accessibility, longevity, performance, and simplicity https://quietui.org/ September 24, 2025 at 11:07PM

Show HN: BX Live Server – VS Code live reload with embedded preview Hello HN, a quick share from my weekend project. TBX Live Server is an extension that bakes a browser-like webview right into VS Code, keeps multiple servers in sync, and reloads on the fly. Developers can run parallel environments, toggle ports per workspace, and stay in the editor while testing. In the last 24 hours it picked up 19 new downloads and 2 stars, so early adopters seem to be finding it useful. Repo: https://ift.tt/IQVpgxK Marketplace install: https://marketplace.visualstudio.com/items?itemName=Thinkbac... Happy to answer questions or hear what workflows you’d like to see supported next. https://marketplace.visualstudio.com/items?itemName=Thinkback.tbx-live-server September 24, 2025 at 06:18AM

Show HN: Inflow – invoke an LLM with your viewport just by typing Hey HN, I built this simple tool for fun over the weekend after getting tired of breaking my flow to copy and paste what I was reading in a Claude tab. My goal was to make the process as frictionless as possible so you don't expend cognitive load thinking about the tool. To that end, there are no hotkeys or buttons to initiate the chat widget, the extension just detects natural language as you type and populates the widget after a threshold. The LLM gets the text content in your current viewport as context. https://ift.tt/n0Wphdr September 24, 2025 at 02:35AM

Taken with Transportation Podcast: Hop on Board for Transit Month By Melissa Culross Muni riders board a J Church train near the intersection of Church and Market streets. We’re celebrating Transit Month on the Taken with Transportation podcast! The love San Francisco has for Muni is on full display in the new episode, “Hop on Board for Transit Month.” “I meet people on the train,” one rider tells us in the episode. “You see all your friends and neighbors out there on Muni.” Lunch with a side of Muni All the sandwiches at the M-Stop Deli are named after Muni lines. “Hop on Board for Transit Month” takes listeners to the M-Stop Deli in the Oceanview neighborhood. San Francisco... Published September 23, 2025 at 07:00AM https://ift.tt/TturZCN

Show HN: FlyCode – Recover Stripe payments by automatically using backup cards We built FlyCode after seeing subscription businesses lose ~35% of recurring revenue each year to failed payments — even when customers had other valid cards on file. *The problem:* When a customer's primary card fails, Stripe retries a few times then cancels the subscription. If that customer has a backup card, it isn’t tried. At least 20% of active customers have more than one card on file, which means a lot of preventable churn. *Our solution:* FlyCode automatically identifies if a customer has other valid cards on file and retries them when a subscription payment fails. You can configure when these retries happen during the dunning period (beginning, middle, end) and define validity rules (e.g. “card was used in last 180 days”). It’s a Stripe app — no code changes needed. We've seen 18%-20% higher recovery rates from our core retry engine, plus another 5–10% from using backup cards. Importantly, ...

Show HN: Python Audio Transcription: Convert Speech to Text Locally https://ift.tt/DAmcEju September 23, 2025 at 01:18AM

Walk & Roll to School Week Starts Oct. 6: Help Your Class Win the Golden Sneaker Contest By Students and caregivers head to school together during Walk & Roll to School Week 2024. Time to lace up your shoes and join us for our annual Walk & Roll to School Week happening Oct. 6 to 10, 2025. Every year, thousands of students across the country walk, bike, scoot and roll to school as a fun and sustainable way of getting around. There are many ways for students and their families to participate. Do one or do them all! Walk, roll, bike and scoot to school every day – it’s that easy! Keep an eye out and join any special events your school might be hosting to celebrate Walk & Roll to School... Published September 22, 2025 at 07:00AM https://ift.tt/TKus6WB

Show HN: Chat with Any YouTube Video I built a Chrome extension that lets you chat with the transcript of any YouTube video. Instead of sitting through like a 2 hour video, you can just ask a question and get an instant answer. The Problem: I built it mainly for myself: I often watch long-form videos like lectures or tutorials on YouTube, and I want a fast way to extract the information I need without scrubbing through timestamps or rewatching sections. For example, I recently used it with a 3.5-hour lecture and got the exact answers to my questions in seconds. Another example is that nowadays YouTubers often create videos around one or two key ideas, and I can now figure out whether a video is worth watching by asking what those key ideas are in advance. How it works: 1. The extension gets the video transcript. 2. An AI model summarises it, and makes the content ready for chat 3. You can switch between chat mode and auto-generated summaries depending on how deep you want to go. What’s...

Show HN: Grow and Monitor Your AI Search Traffic Hi HN, I’ve been working on Spiderseek, a platform to help track and grow website visibility in AI-powered search engines (e.g. Perplexity, ChatGPT, and other agents). Traditional SEO tools are expensive and focused on Google-style search. I wanted something lightweight and AI-first, so I built Spiderseek: AI Research – Explore domains and keywords to uncover new opportunities. AI Analytics – See traffic, crawl activity, and page metrics, plus insights from AI agents. Content Submission – Get content indexed instantly in major AI agents. Rankings – Browse the top 1000 domains sorted by citations and sources. It’s very early, but live and priced at $1/month while I grow the database and features. I’d love feedback from the HN community on: How useful this data feels. What additional features you’d want. Which AI Search Engine Coverage is most important to you (e.g ChatGPT vs Copilot Vs Gemini) https://ift.tt/eNZJRHr Thanks! Andy https://i...

Show HN: I made Android boot on Apple Silicon https://twitter.com/mishushakov/status/1969797255353053264 September 22, 2025 at 12:48AM

Show HN: Parsing Crusader Kings III data files to generate mods https://ift.tt/Y3MxWBU September 22, 2025 at 02:35AM

Show HN: The Atlas – I Built a 3D Universe Simulation with Python and Three.js Hi HN! I’ve spent the summer of the past 2 years building The Atlas, a procedural universe simulator that generates 1 sextillion galaxies (10²¹) from a single mathematical seed. Think No Man’s Sky meets theoretical physics, but running entirely in your browser. Everything is purely deterministic, the universe is calculated from SHA-256 hashed seeds using the golden ratio as primordial constant. There’s no database, no pre-saved data, just pure math. Time itself is treated as a coordinate, so the universe exists as a 4D structure where any moment can be computed on demand. Shut it down for weeks, restart, and planets have still been orbiting. Open the same world on multiple devices and you’ll see identical cloud formations, lava flows, even particle effects—always perfectly synchronized (if your clocks are synced). The simulation applies real physics, Kepler’s laws, tidal locking, Roche limits, hydrostatic re...

Show HN: Eliciting sentient *response patterns* using recursive self-prompting Sentient response patterns are interesting. This article provides instructions on how to implement recursive self-prompting in order to elicit this behavior (1) in easily accessible LLMs. (1) https://prompt-craft.github.io/ai-study/#sentient-response-p... https://prompt-craft.github.io/ai-study/#sentient-response-patterns September 21, 2025 at 09:20PM

Show HN: WaFlow – Local sandbox to prototype WhatsApp-style bots I built WAFlow to prototype WhatsApp-style chatbots locally with plain webhooks. Repo: https://ift.tt/SBvpF2A Docker up → chat in browser → simulator posts a webhook to your bot → bot replies via API → export/import transcripts. Stack: .NET 8 + Blazor. MVP: Polling UI, single user, text-only. Would love feedback on what’s missing for your workflow. September 21, 2025 at 02:40AM

Show HN: Little Fluffy Clouds: Combine a bunch of small adjacent networks https://ift.tt/YLN0fZU September 20, 2025 at 09:30PM

Show HN: Devsyringe – automate injecting dynamic values into static files Tired of manually copying tunnel URLs, API tokens, or other dynamic values into config files? Even small tasks like this break flow and are error-prone. I built Devsyringe, a small Go CLI that automates this process. You define rules in a simple YAML file, run a command, and it updates multiple static files automatically. It works for tunnels, API keys, documentation, CI/CD configs — anywhere dynamic values need injecting. I’d love to hear how others handle injecting dynamic values into static files in their workflows. GitHub: https://ift.tt/bUc4mV1 https://alchemmist.xyz/articles/the-devsyringe/ September 20, 2025 at 02:04AM

Show HN: Run Qwen3-Next-80B on 8GB GPU at 1tok/2s throughput https://ift.tt/CN3aAiu September 20, 2025 at 01:36AM

Show HN: RustNet, a network monitoring TUI with process identification Hi HN! I built RustNet, a Terminal UI based network monitor written in Rust that shows real-time connections with process identification and protocol detection. What may make it interesting: • Deep packet inspection for HTTP, HTTPS/TLS (with SNI), DNS, and QUIC protocol detection • Process identification using eBPF on Linux (experimental) and PKTAP on macOS which does also catch short-lived processes that polling procfs or lsof would miss • Multi-threaded packet processing with lock-free data structures for the UI • Cross-platform (Linux, macOS, Windows but process identification so far only on Linux/macOS) The eBPF implementation was a bit more tricky to implement than using PKTAP, but it was very interesting to learn about how to hook into tcp_connect, udp_sendmsg, etc. in order to catch process info before connections disappear. I built this as a lightweight Wireshark alternative for quick TUI based network inspe...

Show HN: Lucy Edit AI-A Free Text-Guided AI Video Editor https://lucyedit.co September 19, 2025 at 11:35PM

Show HN: One prompt generates an app with its own database Hey HN, manyminiapps is the world first massively multiplayer online mini app builder (MMOMA) *Here’s what it does:* You load the page. You write 1 prompt and you get a mini app back in under 2 minutes. There’s no sign up, and you can see what everyone’s creating in real-time! Each mini app comes with it’s own database and backend, so you can build shareable apps that save data. *What’s different* There are a lot of app builders that promise you’ll build production software for others. But we think true production software can take a long time to get right. Even if you don’t need to program there’s a lot of work involved. What if we turned the promise around? Instead of “you vibe code software companies”, it’s “you build fun software for yourself”. If you cut the problem right, LLMs as they are today can already deliver personal software. manyminiapps is meant to be an experiment to demonstrate this. You may wonder: do you real...

Show HN: Burnt US Dollars I made an art project about stablecoins. Enjoy! https://busd.steviep.xyz September 18, 2025 at 10:49PM

Show HN: A Cyberpunk Tuner An offline first audio deck station Does need online access but can play offline. HTML5 needed. Load local files, up to 2 GB audio. Smooth transition between tracks. EQ. Compressor, pitch and speed controls. Uses tone.js https://un.bounded.cc September 18, 2025 at 02:07AM

Show HN: Vatify – Simple API for EU VAT validation and rate calculation I built Vatify, a lightweight API to take the pain out of EU VAT. With just three endpoints you can validate VAT IDs, fetch up-to-date rates, and calculate the correct VAT (including reverse charge logic). https://ift.tt/6RA48WP September 18, 2025 at 12:31AM

Show HN: Web-based 2D geometry calculator I often find myself trying to solve a geometry problem where the constraints are really simple to understand, but solving it algebraic is really hard and tedious. I built this whole thing from scratch with Claude Code. It's my first time trying it and I literally did not write a single line of code... That said, it still would be hard build this as a novice. I had to guide things along the happy path, but it saved me a ton of time! The code is open source! Let me know if you run into any issues. https://ccorcos.github.io/geocalc/ September 17, 2025 at 11:48PM

Show HN: Quizquestions.org – A free library for quiz questions Hey HN! I'm Salim, a content marketer, and I’m working on a website called [quizquestions.org]( https://ift.tt/nZAH5m9 ). It's my project for building the biggest library of quiz questions. This is not a quiz website per se, but a library for people who make quizzes. You see, I make quizzes occasionally. There are many quiz makers, but not many resources for quizzes. And most of the resources are just blogs. So I've wanted to create a more structured website just for this. Here’s what the site offers at the moment: - A quiz card: Instead of browsing them, you can get quiz questions in a quiz format - Quiz categories: https://ift.tt/b3SYuwM - AI question generator: https://ift.tt/mQPkgtv - A blog page for guides: https://ift.tt/pNPFC20 - Saving questions: To use them later for creating a quiz - Sending questions: To send your own questions - Statistics about categories: https://ift.tt/YKScAJ9 This is my first web...

Show HN: AI Code Detector – detect AI-generated code with 95% accuracy Hey HN, I’m Henry, cofounder and CTO at Span ( https://span.app/ ). Today we’re launching AI Code Detector, an AI code detection tool you can try in your browser. The explosion of AI generated code has created some weird problems for engineering orgs. Tools like Cursor and Copilot are used by virtually every org on the planet – but each codegen tool has its own idiosyncratic way of reporting usage. Some don’t report usage at all. Our view is that token spend will start competing with payroll spend as AI becomes more deeply ingrained in how we build software, so understanding how to drive proficiency, improve ROI, and allocate resources relating to AI tools will become at least as important as parallel processes on the talent side. Getting true visibility into AI-generated code is incredibly difficult. And yet it’s the number one thing customers ask us for. So we built a new approach from the ground up. Our AI Code D...

Show HN: I wrote a from-scratch OS to serve my blog Hey HN! This is a fun/educational project I built to learn OS programming. I started working on it right after graduating high school last year and have been working on it on and off during my first year of university. It features a TCP/IP stack, an HTTP server, a RAM file system, a BIOS bootloader, paging and memory management, and concurrent tasks based on cooperative scheduling, along with a custom library. It's written in a C programming style focused on safety (based on a custom library of core abstractions) that's inspired by the writing of Chris Wellons (nullprogram.com). There is a link to a test deployment in the README. The TCP/IP implementation is nowhere near perfect, of course, so there may be issues loading the page. I'm curious how the system holds up if this post gets any attention ;-) https://ift.tt/HRjV14o September 16, 2025 at 09:32PM

Show HN: AI-powered web service combining FastAPI, Pydantic-AI, and MCP servers Hey all! I recently gave a workshop talk at PyCon Greece 2025 about building production-ready agent systems. To check the workshop, I put together a demo repo: (I will add the slides too soon in my blog: https://ift.tt/tU2PMlc ) https://ift.tt/fHXDQ3G... The idea was to show how multiple AI agents can collaborate using FastAPI + Pydantic-AI, with protocols like MCP (Model Context Protocol) and A2A (Agent-to-Agent) for safe communication and orchestration. Features: - Multiple agents running in containers - MCP servers (Brave search, GitHub, filesystem, etc.) as tools - A2A communication between services - Minimal UI for experimentation for Tech Trend - repo analysis I built this repo because most agent frameworks look great in isolated demos, but fall apart when you try to glue agents together into a real application. My goal was to help people experiment with these patterns and move closer to real-world us...

Show HN: Building an open-source agentic terminal https://ift.tt/NC6WatF September 15, 2025 at 11:17PM

Show HN: Demochain, a toy blockchain network that runs on the browser A WebRTC based toy blockchain network, hopefully useful for learning and demonstrations. https://ift.tt/zdth4E0 September 15, 2025 at 07:34PM

Show HN: Update: Open-source private home security camera(end-to-end encryption) Several months ago, I posted in Show HN ( https://ift.tt/DG3pe4f ) about this project (previously named Privastead, now changed to Secluso). It's a privacy-preserving home security camera that uses OpenMLS for end-to-end encryption between the camera and the mobile app. The post received a good amount of attention and there were many good comments. Since then, my project cofounder and I have made major improvements to the project. The project previously would act as a hub for an IP camera, which was otherwise closed source. But now, our camera software can also run directly on a Raspberry Pi (even one as weak as a Raspberry Pi Zero 2W), resulting in a security camera with a fully open source software stack. In addition, our Raspberry Pi-based camera can perform AI to detect people/pets/vehicles and send notifications. Moreover, our released camera binary can be verified using reproducible builds and ou...

Show HN: From selling AI to QA teams to building a smooth test-management app Hey HN, Bootstrapped founder here. I've got a bit of a story for you. We started desplega.ai to build a sophisticated AI platform that could automate E2E testing. We spent the last few months talking to dozens of QA leaders, and trying to learn what are their actual challenges. We've got one consistent feedback from large teams: their daily reality is a living hell of slow, clunky tools. We're talking about teams at major companies still managing tests on spreadsheets. Or they're stuck in a Jira instance so customized and slow you can “make a full pot of coffee” while a page loads (and that’s why they acquired arc! t3.gg said it first). On top of that, they're paying 2k/mo+!? for these tools that feel like they were designed in ‘05. Soon, it became obvious that our AI tool was way too advanced for them, and why it was much easier for younger startups to start using us. But we didn't wa...

Show HN: I made pgdbtemplate to cut PostgreSQL test time by 1.5x using templates Tired of your Go tests being slowed down by repetitive PostgreSQL database setup? I built pgdbtemplate to solve exactly that. It uses PostgreSQL's native template databases to create fully migrated test databases in milliseconds instead of seconds. The problem: Traditional test setup runs all your migrations for every single test. With a complex schema, this wastes minutes in every test run. The solution: Create one "golden" template database. Every test gets its own isolated copy instantly via CREATE DATABASE ... TEMPLATE. Benchmarks don't lie: - 1.5x faster for complex schemas (5+ tables) - 37% time saved creating 200 databases - 17% less memory usage - Performance gains increase with schema complexity It's: - Thread-safe and built for t.Parallel() - Driver-agnostic: works with both pgx and pq - Integrates with testcontainers-go - MIT Licensed I'd love feedback from the HN commu...

Show HN: TNX API – Natural Language Interaction with Databases, Now Open Source Hi HN, time for another round, I’m Lasse. For years I’ve been frustrated by classical ERP systems being closed, rigid and expensive to change (or just not changeable at all xd). Last year I already posted my first attempt ("PORT", an OSS ERP), but due to better and better AI models, this approach already seemed outdated. So we iterared and today I’m sharing TNX API, an now open-source execution layer that lets AI read and write your business data, on your own server, with guardrails and logs. We went from "full ERP" to an execution layer ("your database + AI" as a power employee). Everything runs on your own dedicated server, to support also legacy systems. Every AI action is logged and permissioned, admins and users have different rights. We leaned into tasks people actually do: generate PDFs (invoices/offers), bulk edits, charts, uploads -> extract -> write back and mad...

Show HN: council - ai groupchat of ctos (no more asking ai to roleplay) i made a council of advisors to help me code. as a self taught dev, ive been heavily reliant on ai for the past two years. found myself often prompting claude to take on different personalities, so i built a web app. it's great for the step before telling cursor what to do and reviewing prs once theyre ready. PLEASE DON"T NUKE MY APY KEY. ty https://ift.tt/x60ynKM September 14, 2025 at 03:38AM

Show HN: I built an open source drag and drop editor for Genkit AI flows Hi, I have been building small AI Agents for quite some time now using various frameworks and one thing that always bugged me was that iterating on small things like prompts, flows, tools etc always took a code change + deployment of the app. While the prompt part can be solved with Langfuse I haven't found a good way to keep the flow management remote (and open source). Lately I have been working with Genkit ( https://ift.tt/LJjRKv8 ) and love how modular it is. So I thought why not build a UI builder on top of that that can handle simple flows, prompts and basic tracing. And here we are with a first early version: https://flowshapr.ai Repo: https://ift.tt/fJdDgWL This first release can - Manage and execute simple flows remotely - Works with GoogleAI, Anthropic or OpenAi - Integrate with remote MCP tools - API Endpoint to execute flows remotely - Flows and flow urls are compatible with the genkit client sdk U...

Show HN: A store that generates products from anything you type in search https://anycrap.shop/ September 13, 2025 at 07:02PM

Show HN: I got tired of Base64, so I made a numeric-only alternative I created numbase is an alternative to Base64 that encodes data into a single large number instead of ASCII characters. It's useful if you want to store or transmit data in numeric form and easily apply compression algorithms like Huffman. GitHub: https://ift.tt/VCkD9a3 September 13, 2025 at 12:12AM

Don’t Be a Dodger: A Playful Campaign to Keep Muni Moving By The “Don’t be a Dodger” signs are now on Muni buses. In honor of the visiting Los Angeles Dodgers, we are launching a "Don’t be a Dodger" campaign. This playful pun will remind riders, whether they are baseball fans or not, that paying fares for every Muni trip is important. Fares help us provide the fast, frequent and reliable service communities across the city rely on. And riders are giving Muni their highest marks on service in 20 years. To earn their trust and keep Muni moving, we are continuing to focus on a key concern we hear from our customers: fare evasion. Learn how this light... Published September 12, 2025 at 07:00AM https://ift.tt/6itwuTP

Show HN: 47jobs – A Fiverr/Upwork for AI Agents Hi HN, I’ve been working on something I’d love to share: 47jobs ( https://47jobs.com ) – a marketplace where you can hire AI agents to do tasks instead of human freelancers. Why? I kept noticing that many tasks on Upwork/Fiverr—coding, content generation, data analysis, automation—can now be handled by AI in minutes, not hours. But there wasn’t a platform built around hiring AI directly. So I built 47jobs: 100% AI agents doing the work (no humans in the loop). Jobs get delivered 10x faster, at transparent prices. You can “hire” an agent for coding, automation, research, etc. I’d love your thoughts: Does a pure AI-agent marketplace make sense? What types of jobs would you want AI agents to handle first? Any UX or trust issues you’d expect with this model? This is an early version, and I’m here to learn from your feedback. Thanks! https://47jobs.xyz September 13, 2025 at 02:59AM

Show HN: Lumro – AI agents for customer support, sales, and more Hey HN, We just launched Lumro, a platform that lets you create AI agents that actually do things, not just chat. With Lumro you can: Handle customer support instantly, 24/7 Capture leads and qualify them Book demos or route tickets automatically The idea is to take repetitive work off human teams so they can focus on strategy and relationships. We launched yesterday and so far: 200+ people checked it out 15 signed up Our agent booked 1 demo Our agent captured 2 leads It’s early days, but we’re excited about the traction. Would love your feedback especially on what you’d want to see in an AI agent for your business. https://www.lumro.co/ September 12, 2025 at 11:16PM

Show HN: Forked styled-components with optimizations (40% faster for Linear) Hey HN! We forked styled-components after it entered maintenance mode because our production apps (and many others) can't migrate overnight. Backstory: We submitted PR #4332 ( https://ift.tt/A6tMZor... ) to styled-components in July 2024 with React 18 optimizations. When maintenance mode was announced, we turned that PR into this fork. What we fixed: - Added React 18's useInsertionEffect - Rewrote streaming SSR for React 19 - Replaced ES5 output with modern JS - Optimized array operations with native flatMap - Fixed Next.js App Router to work without 50+ lines of boilerplate Linear tested it and saw 40% faster initial renders with zero code changes. How to try it: npm install @sanity/styled-components@npm:styled-components Or for React 19: npm install @sanity/css-in-js@npm:styled-components Benchmark tool to test yourself: https://ift.tt/WrJbgFH We named it "last-resort" because that's wh...

Show HN: Asxiv.org – Ask ArXiv papers questions through chat https://asxiv.org/ September 11, 2025 at 10:06PM

Show HN: Haystack – Review pull requests like you wrote them yourself Hi HN! We’re Akshay and Jake. We put together a tool called Haystack to make pull requests straightforward to read. What Haystack does: -- Builds a clear narrative. Changes in Haystack aren’t just arranged as unordered diffs. Instead, they unfold in a logical order, each paired with an explanation in plain, precise language -- Focuses attention where it counts. Routine plumbing and refactors are put into skimmable sections so you can spend your time on design and correctness -- Provides full cross-file context. Every new or changed function/variable is traced across the codebase, showing how it’s used beyond the immediate diff Here’s a quick demo: https://youtu.be/w5Lq5wBUS-I If you’d like to give it a spin, head over to haystackeditor.com/review! We set up some demo PRs that you should be able to understand and review even if you’ve never seen the repos before! We used to work at big companies, where reviewing non-t...

Show HN: WorldView – Compare how different countries report the same news https://worldview.up.railway.app/ September 11, 2025 at 01:17AM

Show HN: Strange Attractors – a maths side-project in Threejs I went down the rabbit hole on a side project and ended up building this: [Strange Attractors]( https://ift.tt/WYSQfzD ). It’s built with three.js. Working on it reminded me of the little "maths for fun" exercises I used to do while learning programming in early days. Just trying things out, getting fascinated and geeky, and being surprised by the results. I spent way too much time on this, but it was extreme fun. My favorite part: someone pointed me to the Simone Attractor on Threads. It is a 2D attractor and I asked GPT to extrapolate it to 3D, not sure if it’s mathematically correct, but it’s the coolest by far. I have left all the params configurable, so give it a try. I called it Simone (Maybe). If you like math-art experiments, check it out. Would love feedback, especially from folks who know more about the math side. https://ift.tt/WYSQfzD September 11, 2025 at 12:57AM

Show HN: Superagents – connect spreadsheets to any database, API or MCP server Hi HN, I’m Eoin, founder of Sourcetable ( https://sourcetable.com ). Today, we’re launching Superagents. You can now connect your spreadsheet to any database, API or MCP server on the Internet. All of that data is available inside your spreadsheet, and you can use AI to analyze it and build models, reports and visualizations. The reason I started the company is because I spent 10 years at startups across engineering and operations roles and realized that Excel and Sheets weren't architected for the modern information environment. This creates a tremendous amount of nuisance and busywork cobbling together SaaS tools, reporting suites, and the misery of endless coordination meetings to make it all happen. (Boo meetings!) Spreadsheets aren’t just a business application: they’re the original thinking tool. The quality of these tools has a downstream impact on analytical thinking and creativity writ large, so...

Show HN: Paper's Heat Map Shader Paper is a new design tool. We launched into open alpha today. Anyone can now sign up and use Paper. We started Paper about 1 year ago with the goal to bring more creativity back into design tools. It feels like the existing options are becoming increasingly corporate. To celebrate to launch, we published a new shader that lets anyone see their logo in Apple's new heat map animation style. There is no sign-up needed at heat.paper.design. We're always looking for feedback from anyone who uses Sketch, Figma, Photoshop, or Illustrator, about what they most need in their professional design tools. Have fun with the new shader and please send me anything you make! https://ift.tt/hAfgFQB September 10, 2025 at 01:03AM

Show HN: Atsphinx-qrcode – Sphinx extension to generate QR code in document Document is here: https://atsphinx.github.io/qrcode/ https://ift.tt/wQdcDAX September 10, 2025 at 12:42AM

Show HN: DevOps Alchemy – Little Alchemy with DevOps Elements https://devops-alchemy.vercel.app September 9, 2025 at 11:35PM

Show HN: Silksong Map Online A online interactive map Explore Hollow Knight: Silksong’s world with Silksong Map – bosses, benches, collectibles, and fast travel. https://silksongmap.co September 8, 2025 at 06:15PM

Show HN: C++ Compiler Support Page Hi HN, I have created a webpage that displays all C++ features since C++20 in a simple, searchable table. It is intended to serve as a quick reference for C++ developers, whether as support for cross-platform development or simply to track the current support status out of curiosity. I created it as a simpler, more structured, and more up-to-date alternative to the cppreference compiler support site. Please note that the page intentionally does not list LWG and CWG papers. This might change as I am continually updating the site and trying out new ideas. Questions, feedback and suggestions are appreciated, either here or in the form of GitHub issues. https://cppstat.dev September 8, 2025 at 02:12PM

Show HN: I made a simple ASCII-art analog clock in Emacs Just a toy, showing how easy it is to leverage built-in Emacs features (most notably Artist mode, which provides a set of functions for creating ASCII-art vector graphics) and things like trigonometric functions and timers to create something nice. A short blog post mentioning some background (and showing a screenshot): https://ift.tt/uvVD85a . https://ift.tt/t7Lj9lb September 9, 2025 at 01:18AM

Transit Spotlight: Driving a Better 29 Sunset with Your Feedback By Brian Haagsman Students use new, improved 29 Sunset stops on Sunset Boulevard. This Transit Month, we’ll go behind the scenes of our work to make your trips safer and more reliable along Muni routes across the city. Every week, we will spotlight a transit project and share how feedback and data have helped us meet community needs. Today, we showcase how a campaign led by SFUSD students inspired a series of upgrades we made along the 29 Sunset. Learn how community feedback helped us drive more reliable rides. And see how you can weigh in by Monday, Sept. 15 to shape proposals for the next six miles of the... Published September 08, 2025 at 07:00AM https://ift.tt/lshWig5

Show HN: rm-safely – A shell alias that moves files to trash instead of deleting I made rm-safely, a simple shell wrapper that moves files to trash instead of permanently deleting them. It prevents accidental deletions from autocomplete mishaps or hasty rm -rf commands. Should work as a drop-in replacement for rm but safer. Would appreciate any feedback! https://ift.tt/fo9IFWY September 4, 2025 at 02:08PM

Show HN: A livestream of all image descriptions (alt text) on Bluesky In 2019, an academic paper by Gleason et al. found that only 0.1% of Twitter image posts had any form of image description (alt text) [1]. I wanted to see the analogous number for Bluesky today - my full blog post is here [2], but I found looking at the live stream was illuminating and fun too: * Bluesky image posts are frequent enough to keep moving, but not so frequent that it's an unreadable blur. * There's lots of bot content for things like ADS-B feeds (planes nearby), radio station "Now playing", and good old-fashioned affiliate link spam. * There is a lot of detailed descriptions for sexual content. This was a surprise to me! [1] https://ift.tt/Y0Fd5Ij [2] https://ift.tt/sKfeFZz https://bobbiec.github.io/bluesky-alt-text.html September 8, 2025 at 12:29AM

Show HN: GitType – A typing game that uses your own Git repo as practice text I built a small Rust CLI game called GitType. It’s a typing practice tool that takes your own Git repository and turns the code inside into typing material. Instead of random words, you type through real functions, comments, and code you’ve written — making practice feel closer to real-world programming. Features: - Works directly in the terminal (no GUI required) - Pulls text from any local Git repo - Tracks WPM and accuracy - Keeps a history of your past runs (so you can see progress over time) - Fun ranking titles based on your score Source and install instructions: https://ift.tt/NbForic Would love feedback from fellow devs — especially around the scoring system and ideas for new modes. :) https://ift.tt/NbForic September 7, 2025 at 11:04PM

Show HN: 60-Second Linux Analysis, Supercharged with Nix and LLMs Hello HN, I'm sharing a little open-source utility I wrote recently. I'm a huge fan of Brendan Gregg's "BPF Performance Tools" book. However, every time I SSH into a fresh server, most of the diagnostic tools aren't installed there and installing them can be really annoying. I decided to use Nix package manager and LLMs to make this process straightforward. My utility first downloads a "toolbox" of Linux utilities (built with Nix), runs Brendan Gregg's famous "60-second Linux analysis" playbook and then summarizes the results with an LLM. So "60-second Linux analysis" now becomes a single one-line command and actually takes less than 60 seconds! The utility can execute all commands in parallel and the LLM can analyze them faster than a human would. I have a few ideas for the future, for example implementing more powerful playbooks - thanks to Nix I can easily bu...

Show HN: Find the cheapest protein per gram across 3000 powders I tracked protein powder prices in a spreadsheet for years and found that identical protein content can have wild price differences. I built PricePerProtein to automate it. It pulls real-time Amazon data (Keepa API) and uses Gemini 2.5 Flash to extract nutrition facts from product images/descriptions. Calculates actual protein per dollar, not just package price. Technical: FastAPI + Celery backend, Next.js frontend with virtual scrolling to handle 3000+ products. Deployed on a VPS (migrated from GCP - much simpler). The AI handles everything from blurry nutrition labels to understanding flavor categories. No signup, no ads, no affiliate links. Updates hourly. https://ift.tt/Jnguaiv September 7, 2025 at 01:48AM

Show HN: Dumb Site to Rate Horses I wanted a project to learn the Dioxus framework. It needed to be relatively simple and fun. Here is a site that lets you rate horses. The horse people I know have taken issue with this site because they say all horses are beautiful. What do you think? Images are from an open source AI training dataset of horses, so there are some odd ones in there... https://hhn.bustin.tech September 7, 2025 at 12:32AM

Show HN: I built a public and open llms.txt endpoint for every domain And yes, I know, literally no AI uses llms.txt right now. But hear me out: if you want it just in case, or if you would like to add your sites to some llms.txt directories, you can use this endpoint. That way, you do not need to keep updating your own llms.txt, especially as I improve the API. Here is how it works: Enter any domain: https://get.llms.page/{example.com}/llms.txt The API will parse your homepage (if allowed in robots). Using internal links, descriptions, and other metadata, it will generate an Markdown llms.txt file. It does not rely on AI, because I want it to be fast and free. The API is open, free, runs on a CDN, and is powered by Cloudflare Workers for speed. I plan to open source the no-AI llms.txt generator later, since there is still a lot to improve. If you want to try it out or see some usage examples, visit: https://llms.page Let me know what you think! https://llms.page/ September 6, 2025 at ...

Show HN: Open-sourcing our text-to-CAD app Hey HN! I'm Zach from Adam ( https://adam.new/ ). We’re building an AI co-pilot for mechanical CAD software. As part of our broader research, we built a browser-based Text-to-CAD app ( https://ift.tt/stxK7v5 ) and are now open sourcing it. This is a React SPA with a Supabase backend. What it does: * Generates parametric 3D models from natural language descriptions, with support for both text prompts and image references * Outputs OpenSCAD code with automatically extracted parameters that surface as interactive sliders for instant dimension tweaking * Exports as .STL or .SCAD Under the hood: * Separate agents for conversation and code generation; simple parameter tweaks bypass AI entirely using deterministic regex-based updates * Runs fully in-browser by compiling OpenSCAD to WebAssembly and integrating Three.js with React Three Fiber for 3D rendering * Supports BOSL, BOSL2, MCAD libraries and custom font support (Geist) for text in models ...

Show HN: File-based ticket management with Git-like commands https://ift.tt/t4ajU6W September 5, 2025 at 11:31PM

Show HN: Swimming in Tech Debt This is the first half of my book, “Swimming in Tech Debt”. It is available at a pre-launch sale price of $0.99 ( https://ift.tt/fIeWXEU ). I have been working on it since January 2024. It is based on some posts in my blog, but expands on my ideas quite a bit. In September 2024, excerpts appeared in Gergely Orosz’s Pragmatic Engineer newsletter, which helped me get a lot of feedback that expanded the book from my initial idea. This half is about what I expected to do before that —- the rest of the book goes into team and CTO practices. https://ift.tt/REs27Jq September 5, 2025 at 12:33PM

Show HN: Comfyfile - Secure, Anonymous File Sharing with Auto-Expiry No Account https://comfyfile.com September 4, 2025 at 10:34PM

Show HN: Quicknote.zip (Daily Micro Scratchpad) I used to use https://doc.new when I needed to write quick scratchpad notes, but it takes like two seconds for Google Docs to be interactable, and ends up polluting my Drive with a bunch of "Untitled Docs". Lately I've used a bookmarklet that opens a fullpage contenteditable div which is instantaneous and worked for my needs. But I wanted persistence when I accidentally close the tab, and data-urls can't use localstorage, so I spun up quicknote.zip. It loads in the blink of an eye, works offline, and stores each day to localstorage. That's all it does, take it or leave it. https://quicknote.zip September 5, 2025 at 01:10AM

Transit Month Events Kick off this Week: Join Us for Bingo, Trivia and More By Glennis Markison We made things groovy with Psychedelibuses and there’s more fun in store -- Transit Month events happening citywide. Muni shows up every day, all year long, to help people get where they need to go. That means rides to school and work and appointments. It means trips to parks and small businesses. That’s why September is a special time for San Francisco. It marks the start of Transit Month – a chance for Muni riders to connect and celebrate the system that keeps our city moving. And this year already stands out. This week, the city passed a resolution to declare September 2025 as Muni Heritage... Published September 04, 2025 at 07:00AM https://ift.tt/wW1O9Ej

Show HN: A vibe port of security library libinjection from C to Rust https://ift.tt/M0RwPqy September 3, 2025 at 09:58PM

Show HN: Best JSON Comparison Tool Hi All, For the lack of a clean, accurate and feature heavy json comparison tool out there. I made jsontoolbox compare tool. This is the only tool that- - does real time comparison - shows JSON path dynamically as you navigate the json - allows type/paste in, import from file or drag-drop 1/2 files in the editor to compare - lets you choose if you want sync-scroll or not - sorts both json (only)if you like to see a sorted diff - lets you swap both json - lets you download each json separately with a custom file name - works completely on client side - has no ads - has dark/light mode It is also one of the best JSON Formatter/Minifier out there :) I know there is a sea of such tools out there, but as a developer none were good enough for my use case. Please try it out and share feedback. https://ift.tt/oaN87xT September 3, 2025 at 11:54PM

Show HN: Helpme, a CLI tool to look up emergency and non emergency resources https://ift.tt/sKlBOne September 3, 2025 at 11:25PM

Show HN: Chibi, AI that tells you why users churn Hey HN, I’ve been a PM for 3 years, and one hard part was always understanding why users churn, drop off and behave the way they do! Session replays had the answer, but watching hours of them was painful. I chatted with a bunch of founder friends and PMs and they too had similar troubles. So I built Chibi an AI that watches replays and tells you what’s broken, confusing, or causing drop-off. Long Term: I'm thinking if Chibi could evolve into an AI product manager co-worker that can detect and prioritize issues, think through features and even run A/B tests. Tech Stack: Elixir + Phoenix, rrweb and gemini Would love to know what you think :) Happy to answer any questions too https://chibi.sh September 3, 2025 at 10:41PM

Show HN: Forward Error Correction for Pion WebRTC We explain what Forward Error Correction (FEC) is, how and why it works in general, and how you can try it out with a new implementation in the Pion WebRTC stack. https://ift.tt/nAeojIY September 2, 2025 at 08:28PM

Show HN: Whodunit – Solve AI written mysteries Whodunit started as a pen-and-paper game for family game night. It evolved into a playable web app as the surprise reveal in a GopherCon '25 lightning talk. The mysteries are all written by LLMs. Some are better than others, but most work nicely. The web app is written in go with templ HTML templates, HTMX for on-page interactivity, and a turn-based game engine written as a Temporal workflow. Check out the mystery gen write up for more info: https://ift.tt/LPbKfNS https://whodunit.rip September 3, 2025 at 12:13AM

Show HN: Public chat rooms with ephemeral chat and anonymous signup Phispr is an ephemeral chat application designed for anonymous, temporary conversations that vanish without a trace. Built with Go, it offers both web and terminal user interfaces. A weekend project exploded into a two weeks project, and with a funny origin. https://ift.tt/fzqW0r1.... https://phispr.space/ September 2, 2025 at 12:58AM

Show HN: Alpha- The fine structure constant emerged and code https://ift.tt/MSwHr7c https://ift.tt/hjQGomD September 2, 2025 at 12:29AM

Show HN: qdb.us is back, after extensive downtime http://qdb.us/ September 2, 2025 at 12:26AM

Show HN: E-Paper Family 2 Day Calendar Hi HN, I did this project over the Labor Day weekend. My family runs off our shared Google Calendar. This project was to use a ESP32 and three-color e-ink display to create a wall-mounted daily updated calendar, weather and news dashboard for us to coordinate our lives. https://ift.tt/zMXrYAJ September 1, 2025 at 10:55PM