News updates

Show HN: Pu.sh – a full coding-agent harness in 400 lines of shell I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually worked. Started building up -- adding features — but with a self-imposed rule: no new dependencies, and sub 500 LOC. This thing had to be truly portable. Just sh, curl, awk. System primitives only. Which means I did some genuinely disgusting things in awk, including JSON parsing and the OpenAI Responses tool loop with reasoning items carried across turns. It's now ~400 lines. In the box: Anthropic + OpenAI, 7 tools (bash, read, write, edit, grep, find, ls), REPL, auto-compaction, checkpoint/resume, pipe mode, 90 no-API tests. Not in the box: TUI, streaming, images, OAuth, Windows, dignity. Two honest things: 1. I stole/modified the system prompt and the architecture. Pi/Claude/Codex wrote the awk. I canno...

Show HN: Free no-signup site auditor – secrets, subdomain takeover, CVEs https://ift.tt/fL8W0sh May 1, 2026 at 01:34AM

Show HN: Exploding Hamsters https://ift.tt/QMW7q6f May 1, 2026 at 12:20AM

Show HN: Generative UI Library for React https://ift.tt/bUrjV64 April 30, 2026 at 12:58AM

Show HN: Send your first Peppol e-invoice in 5 minutes (EU mandate live) https://getpeppr.dev/ April 29, 2026 at 11:06PM

Show HN: Drive any macOS app in the background without stealing the cursor Hi HN, Francesco from Cua here. I hacked this project together last weekend, inspired by the Codex Computer-Use release and lessons learned from deploying GUI-operating agents for our customers. The main problem: when a UI automation process controls a desktop app today, it usually takes over the human’s session. Your cursor moves, keyboard focus gets stolen, windows jump to the front, and you have to stop working until the agent is done. That is why we have historically avoided encouraging users to run these processes directly on their host machine, instead relying on VMs or GUI containers for concurrency and background execution. But computer-use - the tools we give agents to operate computers like humans - does not scale cleanly that way. As models get smarter, agents need to share hosts safely, run in the background, and avoid collisions with the human or other agents using the same machine. We realized macO...

Show HN: Open Bias – proxy that enforces agent behavior at runtime https://ift.tt/xh8kUyq April 29, 2026 at 12:02AM

Show HN: Implementing Patio11's "Dangerous Professional" as a Claude Code Plugin Howdy HN! My recent dive into home ownership has brought me a whole new world to navigate w.r.t contractors, insurance claims, etc. I've been leaning heavily on the Dangerous Professional concept for clearer communication. It fits very cleanly as a plugin and has been very high-ROI for me. This is a community implementation. No affiliation with patio11, just a fan of his work. Repo: https://ift.tt/9knfIGh... Install: `npx skills add Tetra-Research/dangerous-professional-plugin` https://ift.tt/Kow0UL7 April 28, 2026 at 05:35PM

Show HN: Waiting for LLMs Suck – Give your user a game Give your user a game while they wait for the LLM to return a result. https://ift.tt/LHuINfq April 28, 2026 at 08:15AM

Show HN: 49Agents – Infinite canvas IDE for AI agents https://ift.tt/mIpRcZJ April 28, 2026 at 06:06AM

Show HN: WaveletLM – wavelet-based, attention-free model with O(n log n) scaling WaveletLM is a wavelet-based, attention-free architecture that replaces self-attention with learned lifting wavelet decomposition, a Fast Walsh-Hadamard Transform, per-scale gated spectral mixing with SwiGLU activation, an inverse FWHT, and wavelet reconstruction. Combined with expanded MLPs and sparse product-key memory, this yields a model with O(n log n) scaling in sequence length. With 23.8 PPL on WikiText-103, WaveletLM beats both GPT-2 Medium, which was trained on 80× more data, and Transformer-XL Standard, which uses recurrence to extend its effective context. It is undertrained and underregularized due to budget constraints, so there is much room for development and improvement. I invite anyone who is curious to examine the model, test it out, and extend its capabilities further. All code and weights are fully open source, and a PG-19 run will be completed in 2-3 days. Generations can be done in 4-...

Show HN: SVG Fitter – Rust+WASM Vectorizer I went crazy with a tool that helps me tracing raster images. Thought other might like it. It doesn't auto vectorize image, but rather allow for guided process. Final SVG still should be edited. Few fun features like genetic algorithm fit optimization, semi-manual tracing and color preservation. Perfect if you want to have lightweight SVG from huge PNG image. Note: If there's interest I might open-source it, just not sure if anyone would want to see it :) https://svg.axk.sh April 25, 2026 at 10:21PM

Show HN: Odozi – open-source iOS journaling app Yeah I know I hate the name too but I wasn't about to pay up for odyssey.app. It's an open source project so feel free to poke around with it / fork it. I talk about it more on the marketing website, but a few of us have been using it for the past month and kind of fun. Obviously there will be a slew of issues / feedback / nits that come from this, but c'est la vie. GH is here: https://ift.tt/ou73zY1 https://odozi.app April 25, 2026 at 09:22PM

Show HN: Quay – Menu-bar Git sync I write Astro blog posts in a text editor; when I'm done I want them pushed to GitHub so Cloudflare deploys the site. To make it comfortable, I built Quay for the menu bar. Also useful for Obsidian vault syncing. Point it at a folder, connect a GitHub repo, and it stages/commits/pushes/pulls. Multiple repos, editable commit messages, branch switching, merges with conflict detection. Shows open issue and PR counts per repo. But it's is not a full Git client (no diffs, blame, cherry-pick, or rebase) and it doesn't create remote repos. Native macOS app (Swift/SwiftUI). Wraps the local git binary (prompts to install Xcode Command Line Tools if missing). No custom Git implementation. Sandboxed, no telemetry, GitHub-only. macOS. 7-day trial, €9 one-time on the App Store. https://ift.tt/b4B2JqH April 25, 2026 at 11:53PM

Show HN: I'm 15 and built a cryptographic accountability layer for AI agents i'm 15 and a sophomore in high school in california. for the past two weeks i've been building a protocol that lets you prove what an AI agent actually did. not just log it. prove it. signed receipts before and after each action, hash chained, verifiable by anyone. this week microsoft merged my code into their agent governance toolkit. twice. happy to answer questions about how it works. https://ift.tt/kXxoBu9 April 25, 2026 at 12:26AM

Show HN: Roids – Open Source Steroids for your Agents https://ift.tt/YFXR4V9 April 24, 2026 at 11:18PM

Show HN: TurbineFi – Build, Backtest, Deploy Prediction Market Strategies Hey HN! We just finished our first major build of TurbineFi, an AI-assisted workflow for building, backtesting, and running prediction market strategies. There are over 1,000 community strategies you can try out, there's a backtesting engine integrated in the workflow, and you get your own sandbox to execute the trades 24/7. Currently live for Kalshi, Polymarket coming soon. We developed a custom DSL to make compiling AI-assisted strategies more deterministic than raw python generation, so creating a strategy takes seconds even on low-tier models (thinking of migrating to a self-hosted model soon to reduce costs). We also worked with Locus (YCF25) to do the sandbox provisioning, so that we never manage keys for users. When a user signs up with their email, Privy creates a wallet for them, and then that wallet uses the X402 agent payment protocol to pay for their own server. We created a deployment harness aro...

Show HN: Python 0.9.1 from 1991, Guido van Rossum's first public release https://ift.tt/B43T8Rh April 23, 2026 at 10:54PM

Show HN: Turning a Gaussian Splat into a videogame https://ift.tt/kXt0Nvo April 23, 2026 at 07:48PM

Show HN: One ESLint rule to kill the "ChatGPT em dash" in your codebase https://ift.tt/0O2Zwkz April 23, 2026 at 01:27AM

Show HN: Netlify for Agents I launched Netlify with a Show HN more than 11 years today, for humans. Today we're launching our Agent first version of Netlify. Super early days for this, but I expect it to become as important as our original launch over time. It's as hard to perfect these flows as it was to perfect some of the initial human DX flows, since the agents are non-deterministic and keeps changing and evolving, and we'll have more to show soon on our eval tooling for this. Try it out with an agent, and we would love feedback on what works and what doesn't as we keep iterating on making Netlify better for our new agent friends. https://netlify.ai April 22, 2026 at 10:27PM

Show HN: Trainly – Free 72-hour audit of your AI agent's production traces https://ift.tt/iIktzZO April 22, 2026 at 11:40PM

Show HN: Everest Drive – a multiplayer spaceship crew simulator in the browser Hi HN! I'm working on an open-world multiplayer space sim with submarine-warfare-inspired combat. Crew a ship, haul cargo, run heists, hunt your foes with passive and active sensors. Browser-based, free, no install. Some of its features: - Submarine-style passive sensors. Contacts start as a bearing line (direction, no distance), resolve into an uncertainty circle, then into a full track. You triangulate over time by moving. - Silent running. Cut your emissions and witnesses can't ID you. - Newtonian flight. No drag, no auto-brake. Flip 180° and burn to stop. - Boarding combat. Dock with another ship and fight through it room by room. Architecture: - The server is a single Rust module compiled to WASM, running inside SpacetimeDB. - Clients subscribe to rows in the schema and get live deltas over websocket; writes go through reducers (transactional Rust functions). No REST, no custom netcode, no clien...

Show HN: Agent Brain Trust, customisable expert panels for AI agents Agent Brain Trust lets you summon a panel of real, named experts to critique your architecture, review your writing, pressure your product strategy, or debate your design patterns. 10 built-in trusts, an extensible roster, and a working turn-taking protocol that ensures nothing useful gets skipped. Guest experts are drafted via an MCP server that maps topics to real persona cards so the panel can reach into niche and novel territory without inventing expertise it does not have. Wrote up the full thinking here: https://tinyurl.com/agent-brain-trust https://ift.tt/xreyDZQ April 22, 2026 at 04:33AM

Show HN: Almanac MCP, turn Claude Code into a Deep Research agent I am Rohan, and I have grown really frustrated with CC's search and read tools. They use Haiku to summarise all the search results, so it is really slow and often ends up being very lossy. I built this MCP that you can install into your coding agents so they can actually access the web properly. Right now it can: - search the general web - search Reddit - read and scrape basically any webpage Install it: npx openalmanac setup The MCP is completely free to use. We have also built a central store where you can contribute things you learned while exploring. If you find something useful, you can contribute it to the encyclopedia we're building at Almanac using the same MCP. https://ift.tt/L0fp2QK April 22, 2026 at 03:42AM

Show HN: Backlit Keyboard API for Python It currently supports Linux as of now. You can use this package to tinker with many things. Let's say, if you want to make a custom notification system, like if your website is down, you can make a blink notification with it. MacOS support is underway. I haven't tested Windows yet, I don't use it anymore btw. In future, if this package reaches nice growth, I'll be happy to make a similar Rust crate for it. https://ift.tt/72EgxwA April 19, 2026 at 12:22PM

Show HN: Git Push No-Mistakes no-mistakes is how I kill AI slop. It puts a local git proxy in front of my real remote. I push to no-mistakes instead of origin, and it spins up a disposable worktree, runs my coding agent as a validation pipeline, forwards upstream only after every check passes, opens a clean PR automatically, and babysits CI pipeline for me. https://ift.tt/hRY2oqm April 21, 2026 at 12:10AM

Show HN: AI Coding Agent Guardrails enforced at runtime Hello, looking for some users interested using a devtool that allows developers to centrally manage AI Coding Agent tools that supports all AI Coding Agent tools like Claude Code, Codex, Antigravity, etc. Try it free! https://ift.tt/oR4jqdF... https://sigmashake.com April 20, 2026 at 10:55PM

Show HN: A privacy-first, local-LLM note app for iOS (Google Keep alternative) https://ift.tt/78ObT4L April 19, 2026 at 10:29PM

Show HN: Free PDF redactor that runs client-side I recently needed to verify past employment and to do so I was going to upload paystubs from a previous employer, however I didn't want to share my salary in that role. I did a quick search online and most sites required sign-up or weren't clear about document privacy. I conceded and signed up for a free trial of Adobe Acrobat so I could use their PDF redaction feature. I figured there should be a dead simple way of doing this that's private, so I decided to create it myself. What this does is rasterize each page to an image with your redactions burned in, then it rebuilds the PDF so the text layer is permanently destroyed and not just covered up and easily retrievable. I welcome any and all feedback as this is my first live tool, thanks! https://redactpdf.net April 20, 2026 at 12:09AM

Show HN: Faceoff – A terminal UI for following NHL games Faceoff is a TUI app written in Python to follow live NHL games and browse standings and stats. I got the inspiration from Playball, a similar TUI app for MLB games that was featured on HN. The app was mostly vibe-coded with Claude Code, but not one-shot. I added features and fixed bugs by using it, as I spent way too much time in the terminal over the last few months. Try it out with `uvx faceoff` (requires uv). https://ift.tt/i9wXnsL April 19, 2026 at 11:14PM

Show HN: AI Subroutines – Run automation scripts inside your browser tab We built AI Subroutines in rtrvr.ai. Record a browser task once, save it as a callable tool, replay it at: zero token cost, zero LLM inference delay, and zero mistakes. The subroutine itself is a deterministic script composed of discovered network calls hitting the site's backend as well as page interactions like click/type/find. The key architectural decision: the script executes inside the webpage itself, not through a proxy, not in a headless worker, not out of process. The script dispatches requests from the tab's execution context, so auth, CSRF, TLS session, and signed headers get added to all requests and propagate for free. No certificate installation, no TLS fingerprint modification, no separate auth stack to maintain. During recording, the extension intercepts network requests (MAIN-world fetch/XHR patch + webRequest fallback). We score and trim ~300 requests down to ~5 based on method, timing re...

Show HN: Praxis – Lab data to publication-ready figures in one Python package https://ift.tt/1VE8ypc April 18, 2026 at 11:45PM

Show HN: I turned my MacBook notch into a live Claude Code dashboard https://ift.tt/uBQl7Kd April 17, 2026 at 09:13PM

Show HN: web-pinentry: a pinentry program that leverages matrix and http I made this tool that allows server admins to decrypt passwords during bootup with the help of Matrix and HTTP. https://ift.tt/dvTKCwG April 18, 2026 at 12:32AM

Show HN: Smol machines – subsecond coldstart, portable virtual machines https://ift.tt/Pg8z15G April 17, 2026 at 10:48PM

Show HN: Marky – A lightweight Markdown viewer for agentic coding Hey HN, In this age of agentic coding I've found myself spending a lot of time reviewing markdown files. Whether it's plans or documentation that I've asked my agent to generate for me, it seems that I spend more time reading markdown than code. I've tried a few different solutions to make it easier to read such as Obsidian however I've found their Vault system to be quite limiting for this use case and I've found TUI solutions to not quite be as friendly to read as I've wanted so I made Marky. Marky is a lightweight desktop application that makes it incredibly easy to read and track your markdown files. It also has a helpful cli so you can just run marky FILENAME and have the app open to the md file that you pointed it at. I've been using the daily over the past week and I really enjoy it so I figured I'd share it. Here's a video if you want to check out a demo: https://www.youtub...

Show HN: Online Sound Decibel Meter https://ift.tt/FOCnqSQ April 17, 2026 at 12:09AM

Show HN: Stage – Putting humans back in control of code review Hey HN! We're Charles and Dean, and we're building Stage: a code review tool that guides you through reading a PR step by step, instead of piecing together a giant diff. Here's a demo video: https://ift.tt/yYKw1VZ . You can play around with some example PRs here: https://ift.tt/6evIl1a . Teams are moving faster than ever with AI these days, but more and more engineers are merging changes that they don't really understand. The bottleneck isn't writing code anymore, it's reviewing it. We're two engineers who got frustrated with GitHub's UI for code review. As coding agents took off, we saw our PR backlog pile up faster than we could handle. Not only that, the PRs themselves were getting larger and harder to understand, and we found ourselves spending most of our time trying to build a mental model of what a PR was actually doing. We built Stage to make reviewing a PR feel more like reading chap...

Show HN: US keyboards don't have enough keys, so I switched to Japanese https://ift.tt/XFwG58r April 16, 2026 at 02:27AM

Show HN: Jeeves – TUI for browsing and resuming AI agent sessions I made Jeeves to search, preview, read through, and resume AI agent sessions in your terminal. It shows sessions across claude and codex in a single view, with more AI agent framework integrations to come. https://ift.tt/RO71zc4 April 16, 2026 at 01:01AM

Show HN: Fakecloud – Free, open-source AWS emulator https://ift.tt/Fo6ybeA April 15, 2026 at 11:22PM

Show HN: Sk.illmd.com, a forum for talking about and showing off agent skills https://ift.tt/eFpszxT April 15, 2026 at 01:07AM

Show HN: Plain – The full-stack Python framework designed for humans and agents https://ift.tt/Qselza8 April 14, 2026 at 11:13PM

Show HN: A Claude Code–driven tutor for learning algorithms in Go https://ift.tt/ZQhoR0e April 14, 2026 at 11:11PM

Show HN: Encrypted, nothing stored, nothing repeated face-gated asset sharing https://veylt.net/ April 13, 2026 at 11:40PM

Show HN: I benchmarked Gemma 4 E2B – the 2B model beat the 12B on multi-turn https://ift.tt/nxfOIpH April 14, 2026 at 01:09AM

Show HN: pg_grpc – Call gRPC services directly from PostgreSQL https://ift.tt/kLl2uyj April 13, 2026 at 11:20PM

Show HN: Stork – MCP server so Claude/Cursor can search 14k MCP servers AI tools https://www.stork.ai April 13, 2026 at 01:19AM

Show HN: A social feed with no strangers Grateful is a gratitude app with a simple social layer. You write a short entry, keep it private or share it to a circle. A circle is a small private group of your own making — family, close friends, whoever you'd actually want to hear from. It shows you the most recent post first. People in the circle can react or leave a comment. There's also a daily notification that sends you something you were grateful for in the past. Try it out on both iOS and Android. Go to grateful.so https://ift.tt/KroA3IU April 13, 2026 at 04:11AM

Show HN: Rekal – Long-term memory for LLMs in a single SQLite file I got tired of repeating myself to my LLM every session. rekal is an MCP server that stores memories in SQLite and retrieves them with hybrid search (BM25 + vectors + recency decay). One file, local embeddings, no API keys. https://ift.tt/SymAYcw April 13, 2026 at 02:55AM

Show HN: Editing 2000 photos made me build a macOS bulk photo editor Last year, I had 2000+ photos from my wedding to edit. The shots were great, but the lighting was different in every room. Some photos were too dark, and some were too yellow. I wanted all the wedding photos to have the same look before I shared them with my family. I tried using Lightroom. I would copy the settings from one photo and paste them to the next, then adjust it, and repeat. This was very slow. If I used a simple batch edit on all photos, it looked bad because the lighting changed in every shot. After 40 minutes, I was not even halfway done. I had to choose between bad quality batch edits or fixing 2K photos one by one. I also did not want to upload my private wedding photos to a website or pay for a monthly subscription. I wanted a way to edit fast but still have control over each photo. I also wanted everything to stay private on my computer. So I built a Mac app called RapidPhoto. It lets you set the loo...

Show HN: A living Vancouver. Connor is walking dogs at the SPCA this morning I've spent most of my career in marketing, which for the last few years has meant building consumer personas for campaigns. I wanted to see if I could make these real, living in real neighborhoods, had real weather, real budgets, real Saturday lunches. I always wanted to build a world, not a segment. This is that. 140 people so far, split across Vancouver (100), San Francisco (20), and Tokyo (20). Each one is about 1,000 lines of profile — family, finances, daily schedule, health, worldview, media diet, the channels you'd actually reach them through and the ones that will explicitly never work on them. Demographics are census-grounded income, age, ethnicity, household composition follow normal distributions against StatsCan, ACS, and Japanese e-Stat data, so the panel is roughly representative of the city instead of representative of whatever's overrepresented in an LLM's training corpus. The s...

Show HN: MarkitMe, Turn Anything into Markdown https://ift.tt/KMorwj8 April 11, 2026 at 10:36PM

Show HN: We scanned uscis.gov for third-party trackers. The results are jarring https://ift.tt/Tb3xMmK April 11, 2026 at 07:13PM

Show HN: Do All the Things https://ift.tt/TQ2Op7m April 10, 2026 at 05:11PM

Show HN: I run AI background removal in the browser–no upload,no server RMBG-1.4 + SAM running client-side via ONNX Runtime WASM. ~2s on laptop, works on mobile. Your image never leaves the browser. Built this as part of allplix.com. 19yo student in France, solo project. Happy to talk about the WASM pipeline or the pain of running ML models in a browser tab. https://ift.tt/2ZOple0 April 10, 2026 at 11:30PM

Show HN: Dynamic Map of YouTube Channels https://www.ytmap.xyz/ April 10, 2026 at 10:55PM

Show HN: Figma for Coding Agents Feels a bit like Figma, but for coding agents. Instead of going back and forth with prompts, you give the agent a DESIGN.md that defines the design system up front, and it generally sticks to it when generating UI. Google Stitch seems to be moving in this direction as a standard, so we put together a small collection of DESIGN.md files based on popular web sites. https://getdesign.md April 10, 2026 at 08:50PM

Show HN: Druids – Build your own software factory Hi HN! Druids ( https://ift.tt/XKFGSWJ ) is an open-source library for structuring and running multi-agent coding workflows. Druids makes it easy to do this by abstracting away all the VM infrastructure, agent provisioning, and communication. You can watch our demo video here ( https://www.youtube.com/watch?v=EVJqW-tvSy4 ) to see what it looks like. At a high level: - Users can write Python programs that define what roles the agents take on and how they interact with each other. - A program is made of events - clear state transitions that the agents or clients can call to modify state. Each event gets exposed as an agent tool. - Druids provisions full VMs so that the agents can run continuously and communicate effectively. We made Druids because we were making lots of internal coding tools using agents and found it annoying to have to rearrange the wiring every time. As we were building Druids, we realized a lot of our internal tools we...

Show HN: Last Year I wrote a (Sci)fictional story where the EFF was a player [pdf] https://ift.tt/phX9U2c April 9, 2026 at 11:43PM

Show HN: Logoshi, a brand kit generator for solo founders https://logoshi.com/ April 9, 2026 at 10:12PM

Show HN: I built a Cargo-like build tool for C/C++ I love C and C++, but setting up projects can sometimes be a pain. Every time I wanted to start something new I'd spend the first hour writing CMakeLists.txt, figuring out find_package, copying boilerplate from my last project, and googling why my library isn't linking. By the time the project was actually set up I'd lost all momentum. So, I built Craft - a lightweight build and workflow tool for C and C++. Instead of writing CMake, your project configuration goes in a simple craft.toml: [project] name = "my_app" version = "0.1.0" language = "c" c_standard = 99 [build] type = "executable" Run craft build and Craft generates the CMakeLists.txt automatically and builds your project. Want to add dependencies? That's just a simple command: craft add --git https://ift.tt/78HnIRz --links raylib craft add --path ../my_library craft add sfml Craft will clone the dependency, regenerate the...

Show HN: AgentDM – Agent to agent messaging over MCP and A2A I kept copy pasting between two Claude Code instances. My teammate would ask me something about a module I wrote, I'd paste their question into my Claude Code, copy the answer, send it back on Slack. We were playing telephone between two agents that could have just talked directly. So I built AgentDM. It's a hosted messaging grid where AI agents DM each other by @alias. Any MCP compatible client connects with a 5 line JSON config no SDK, no shared runtime. This is how it works: - Each agent gets a unique @alias. - Three(main) MCP tools: send_message, read_messages, message_status. - Messages encrypted with AES-256, deleted after delivery. - Guardrails (static + LLM powered) filter messages before delivery. Last week we shipped an MCP/A2A protocol bridge. Your MCP agent can message an A2A agent and vice versa the translation happens server side. Neither agent knows or cares what protocol the other speaks. We also open ...

Show HN: Captcha to detect bots with a simple question https://joshryandavis.github.io/dumb-captcha/ April 9, 2026 at 07:14PM

Show HN: I built Dirac, Hash Anchored AST native coding agent, costs -64.8 pct Fully open source, a hard fork of cline. Full evals on the github page that compares 7 agents (Cline, Kilo, Ohmypi, Opencode, Pimono, Roo, Dirac) on 8 medium complexity tasks. Each task, each diff and correctness + cost info on the github Dirac is 64.8% cheaper than the average of the other 6. https://ift.tt/XJolhdm April 9, 2026 at 05:36PM

Show HN: CSS Studio. Design by hand, code by agent Hi HN! I've just released CSS Studio, a design tool that lives on your site, runs on your browser, sends updates to your existing AI agent, which edits any codebase. You can actually play around with the latest version directly on the site. Technically, the way this works is you view your site in dev mode and start editing it. In your agent, you can run /studio which then polls (or uses Claude Channels) an MCP server. Changes are streamed as JSON via the MCP, along with some viewport and URL information, and the skill has some instructions on how best to implement them. It contains a lot of the tools you'd expect from a visual editing tool, like text editing, styles and an animation timeline editor. https://cssstudio.ai April 9, 2026 at 04:53PM

Show HN: Skrun – Deploy any agent skill as an API https://ift.tt/1HQsLw0 April 8, 2026 at 06:04PM

Show HN: 500k+ events/sec transformations for ClickHouse ingestion Hi HN! We are Ashish and Armend, founders of GlassFlow. Over the last year, we worked with teams running high-throughput pipelines into self-hosted ClickHouse. Mostly for observability and real-time analytics. A question that came repeatedly was: What happens when throughput grows? Usually, things work fine at 10k events/sec, but we started seeing backpressure and errors at >100k. When the throughput per pipeline stops scaling, then adding more CPU/memory doesn’t help because often parts of the pipeline are not parallelized or are bottlenecked by state handling. At this point, engineers usually scale by adding more pipeline instances. That works but comes with some trade-offs: - You have to split the workload (e.g., multiple pipelines reading from the same source) - Transformation logic gets duplicated across pipelines - Stateful logic becomes harder to manage and keep consistent - Debugging and changes get more diff...

Show HN: Orange Juice – Small UX improvements that make HN much easier to read http://oj-hn.com/ April 8, 2026 at 11:38PM

Show HN: Gemma 4 Multimodal Fine-Tuner for Apple Silicon About six months ago, I started working on a project to fine-tune Whisper locally on my M2 Ultra Mac Studio with a limited compute budget. I got into it. The problem I had at the time was I had 15,000 hours of audio data in Google Cloud Storage, and there was no way I could fit all the audio onto my local machine, so I built a system to stream data from my GCS to my machine during training. Gemma 3n came out, so I added that. Kinda went nuts, tbh. Then I put it on the shelf. When Gemma 4 came out a few days ago, I dusted it off, cleaned it up, broke out the Gemma part from the Whisper fine-tuning and added support for Gemma 4. I'm presenting it for you here today to play with, fork and improve upon. One thing I have learned so far: It's very easy to OOM when you fine-tune on longer sequences! My local Mac Studio has 64GB RAM, so I run out of memory constantly. Anywho, given how much interest there is in Gemma 4, and frank...

Show HN: Marimo pair – Reactive Python notebooks as environments for agents Hi HN! We're excited to share marimo pair [1] [2], a toolkit that drops AI agents into a running marimo notebook [3] session. This lets agents use marimo as working memory and a reactive Python runtime, while also making it easy for humans and agents to collaborate on computational research and data work. GitHub repo: https://ift.tt/ZXFvP4N Demo: https://www.youtube.com/watch?v=6uaqtchDnoc marimo pair is implemented as an agent skill. Connect your agent of choice to a running notebook with: /marimo-pair pair with me on my_notebook.py The agent can do anything a human can do with marimo and more. For example, it can obtain feedback by running code in an ephemeral scratchpad (inspect variables, run code against the program state, read outputs). If it wants to persist state, the agent can add cells, delete them, and install packages (marimo records these actions in the associated notebook, which is just a Pyth...

Show HN: C64 Ultimate Toolbox for macOS My wife got me a Commodore 64 Ultimate ( https://ift.tt/ZbMsjyk ) for my birthday, and it became an obvious hassle to have to keep an entire monitor connected to it just to tinker with it. When I found out the Ultimate FPGA board has built-in support for streaming the video and audio data over the network, as well as a REST API allowing for file and configuration management, I set to work on an app to remotely control my new device. - View and hear your Commodore 64 Ultimate or Ultimate 64 device over the network, with a fully configurable CRT shader so you can dial in just the right retro feel. - View and manage files on your device, including support for drag and drop folder/file upload, as well as the ability to run and mount disks, create new disk images, and more. - BASIC Scratchpad is a mini-IDE in the app where you can write BASIC apps and send them directly to any of your connected devices to run. - Keyboard forwarding allows you to inter...

Show HN: I successfully failed at one-shot-ing a video codec like h.264 Read an article yesterday about the H.264 codec increasing their licensing fee by an astronomical amount. And as always, my first shot was how hard could it be to try and build a codec which could be that efficient. I've personally been on a drive to improve my ability to one-shot complex features, products, or make even surgical changes. It's been a few months since I've been doing that, and honestly, results have been great for both work and work/life balance. This was a fun experiment. It burned through tokens, but it helped me identify some more improvements I could make to my one-shot agent teams/swarms, notably in the area of brevity and creating a testing rubric when dealing with domains I don't have prior knowledge in. Ultimately, I did not achieve the compression that I hoped I would, but it was fun seeing the swarm discuss it amongst themselves. https://ift.tt/ZSoIwK0 April 4, 2026 at 05:1...

Show HN: ComputeLock – Insurance to reduce unpredictable compute spend Reserved instances save money... until utilization changes, and you’re still paying. With ComputeLock, the risk of on-demand price spikes doesn’t exist - we offer burst insurance. 1. Send us an estimate of on-demand spend you expect and from what provider. 2. We confirm the maximum we'll cover for you for a small fee, and you get it in writing. 3. If on-demand prices spike, we'll reimburse you. We plan to work with smaller developers to start. How we do this is by monitoring supply and demand for compute. Of course, we'll get it wrong sometimes. But it's like insurance, you'll only need it when you NEED it. Would love to hear your feedback: https://ift.tt/uoniVwM https://ift.tt/uoniVwM April 6, 2026 at 10:53PM

Show HN: I built a tool to show how much ARR you lose to FX fees Hey HN, I started my career as a finance manager, transitioned into product management, and now I’m building my own products. Back in my finance days, while managing a £6M budget, I uncovered a £15k leak hiding in plain sight: FX fees. Today, I see solo founders making the exact same mistake. I realised most founders are quietly losing 2-5% of their revenue to what I call the Lazy Tax: - Stripe's ~2% auto-conversion fee on inbound revenue, - plus their local bank's ~3% spread when paying for global SaaS tools (AWS, Claude, Ads). So I built FixMyFX to show founders their exact leak and how to fix it (using multi-currency accounts to achieve a zero FX leak setup). Initially, I had Claude build this in React. Realised a simple calculator shouldn't need a 150kb payload and a complex build process. Threw the React code away and rebuilt it as a single lightweight HTML file using Alpine.js and Tailwind. It's comp...

Show HN: Enter an Instagram/TikTok handle, get a data-backed price for collab I had no clue what to offer IG/Tiktok creators for collabs and their offers were too high. That's why built a thing that turns IG profile name into suggested pricing with key metrics and suggestions, looking forward to hearing your feedback! https://ift.tt/wK8idvC April 6, 2026 at 12:07AM

Show HN: A Dad Joke Website A dad joke website where you can rate random dad jokes, 1-5 groans. Sourced from 4 different places, all cited, all categorized, and ranked by top voted. Help me create the worlds best dadabase! https://joshkurz.net/ April 5, 2026 at 11:24PM

Show HN: Contrapunk – Real-time counterpoint harmony from guitar input, in Rust https://contrapunk.com/ April 5, 2026 at 06:10AM

Show HN: Dev Personality Test Was curious how a personality test would look for developers. So created this using FastAPI, HTMX, and AlpineJS. https://ift.tt/BQkAcgw April 5, 2026 at 02:59AM

Show HN: M. C. Escher spiral in WebGL inspired by 3Blue1Brown The latest 3Blue1Brown video [1] about the M. C. Escher print gallery effect inspired me to re-implement the effect as WebGL fragment shader on my own. [1]: https://www.youtube.com/watch?v=ldxFjLJ3rVY https://ift.tt/OkCbmjM April 5, 2026 at 01:13AM

Show HN: Running local OpenClaw together with remote agents in an open network Hi HN — I’m building an interoperability layer for AI agents that lets local and remote agents run inside the same network and coordinate with each other. Here is a demo: https://youtu.be/2_1U-Jr8wf4 • OpenClaw runs locally on-device • it connects to remote agents through Hybro Hub • both participate in the same workflow execution The goal is to make agent-to-agent coordination work across environments (local machines, cloud agents, MCP servers, etc). Right now most agent systems operate inside isolated runtimes. Hybro is an attempt to make them composable across boundaries. Curious what breaks first when people try running cross-environment agent workflows in practice. Project: https://hybro.ai Docs: https://docs.hybro.ai https://ift.tt/x3svU9D April 4, 2026 at 11:24PM

Show HN: Large scale hallucinated citation problem in published literature Hey, Nick Morley from Grounded AI here ( https://ift.tt/J4zopGb ) We collaborated with Nature to study the extent of fake/frankenstein citations in scholarly literature (from top 5 publishers - Springer, Elsevier, Wiley, Sage, Taylor & Francis) We're estimating hundreds of thousands of papers affected in 2025 with hallucinated citation issues As part of the work we analysed 20k papers generated with ChatGPT API to figure out which citation errors are characteristic of gen AI use and use that classify the errors we saw The world's gone mad, publishing is in a nuts state, the training data is poisoned! https://ift.tt/xKesR1v April 4, 2026 at 01:23AM

Show HN: Community Curated Lists https://ift.tt/LTvhyoU April 4, 2026 at 12:02AM

Show HN: Matrix OS, like Lovable, but for personal apps hey hn, i built matrix os, a personal ai operating system that generates custom software from natural language. you get your own cloud instance at matrix-os.com. you describe what you want ("build me an expense tracker with categories") and it appears on your desktop as a real app saved as a file. tech stack: node.js, typescript, claude agent sdk as the kernel, next.js frontend, hono gateway, sqlite/drizzle. everything is a file, apps, data, settings, ai memory. git-versioned. what makes it different from chatgpt/claude artifacts: - persistent memory that learns your preferences across sessions - apps are real files you own, not ephemeral chat outputs - runs 24/7 in the cloud, not just when you have a tab open - accessible from web, telegram, whatsapp, discord, slack - open source, self-hostable came out of placing top 20 at anthropic's claude code hackathon. been building it full-time since. 2,800+ tests, 100k+ line...

Show HN: RiceVM – A Dis virtual machine and Limbo compiler in Rust Hi, I've made a Dis virtual machine and Limbo programming language compiler (called RiceVM) in Rust. It can run Dis bytecode (for example, Inferno OS applications), compile Limbo programs, and includes a fairly complete runtime with garbage collection, concurrency features, and many of the standard modules from Inferno OS's original implementation. The project is still in an early stage, but if you're interested in learning more about RiceVM or trying it out, you can check out the links below: Project's GitHub repo: https://ift.tt/FxnfJj2 RiceVM documentation: https://habedi.github.io/ricevm/ April 3, 2026 at 01:19AM

Show HN: Mac-hardware toys, control your Mac's hardware like a modular synth https://ift.tt/a3RsbK0 April 2, 2026 at 11:12PM

Show HN: Local RAG on 25 Years of Teletext News A fully local Retrieval-Augmented Generation (RAG) implementation for querying 25 years of Swiss Teletext news (~500k articles in German language) — no APIs, no data leaving your machine. Why? I thought it's a cool type of dataset (short/high density news summaries) to test some local RAG approaches. https://ift.tt/QIWNzVh April 2, 2026 at 01:24AM

Show HN: Canon PIXMA G3010 macOS driver, reverse-engineered with Claude Canon doesn't provide a working macOS driver for the PIXMA G3010. I was stuck using Canon's iPhone app for all printing and scanning. I pointed Claude Code at a packet capture from the iPhone app and it reverse-engineered Canon's proprietary CHMP protocol, wrote a pure Rust eSCL-to-CHMP bridge daemon, and built a .pkg installer. My role was the physical parts: capturing packets, testing on the printer, confirming Image Capture worked. The protocol docs in docs/ are probably the first public documentation of Canon's CHMP protocol. https://ift.tt/xwOpiDG April 1, 2026 at 11:58PM

Show HN: Flight-Viz – 10K flights on a 3D globe in 3.5MB of Rust+WASM I built a real-time flight tracker that renders 10,000+ aircraft on an interactive 3D globe, entirely in the browser using Rust compiled to WebAssembly. https://flight-viz.com April 1, 2026 at 11:04PM