LinkHarvestDigest

Show HN: Dotenv-Diff v3.0.0 Long time since i last posted updated about dotenv-diff, a lot of new features since then https://ift.tt/HWZqryN July 7, 2026 at 09:54PM

Show HN: Krbn, a pencil-style 3D renderer with SVG output Krbn is a childhood dream I finally got to research & prototype (from a hospital bed of all places), during a medical break from my normal work: a rendering engine that draws 3D scenes the way a technical sketch artist would. It asks "which lines would an artist draw and what would they leave out?" Basically strokes are derived exactly from geometry, rather than sampling. True conics, quartics etc. So there is no shading model, it's replaced by hatching (either flat or following the curvature of the object). There's no alpha channel, the gaps between lines do the work as on paper. It introduces hand-wobble (which is seeded, so animations don't "boil" between frames) and various other things; the example gallery shows more. With all that, output is byte-stable, i.e. two successive renders will cause zero changes in Git. Full disclosure, since it matters here: this was built with significant AI ...

Show HN: @playbykey/theory - Music theory TypeScript engine and MCP server https://ift.tt/pNrs5Uw July 11, 2026 at 03:15AM

Show HN: We beat Cloudflare's bot detection (open-source stealth browser) https://ift.tt/MBOi40m July 11, 2026 at 01:26AM

Show HN: Debloat Slack – Get rid of Slackbot, AI upsells and other annoyances https://ift.tt/ve40KwX July 10, 2026 at 03:08AM

Show HN: Fortress – Give your agents unlimited access to the web i personally believe that the internet is the best thing we've ever built, and arguably, nothing we made before comes close. now agents can use it too, but the web treats them as second-class. every agent works for a person, so whatever it keeps from agents it keeps from us. we believe that if we let them in, each of us gets the whole of what we built, a thousand times over. and to add to that, democratization of tools that allow this is essential, despite the fact that there will always be bad actors. so, we built fortress, which is an open-source stealth chromium engine. it is a recompiled fork that corrects the browser fingerprint from inside the engine: the surfaces bot detectors read, canvas, webgl, audio, fonts, navigator, and about thirty more, are patched in chromium's c++, with no javascript layer sitting on top for a page to catch. it beats the hardest bot detectors on the planet, works fully locally and...

Show HN: I built a free app for New Yorkers to save money on groceries I built this because I see that grocery savings are achievable in NYC. People usually just go to the store they're used to going to, and it's rarely worth the effort of combing through card cashback, weekly coupons, CPG rebates. Most people leave real money on the table by not stacking them, and even more don't even know that these deals are out there.... so I built a way to automate it. You can use it for free, no login, currently NYC-only with ~690 stores. I built it so that you just search whatever you want (use commas if you want to search multiple items). Or - use the AI tool to help shop for you. If you're curious, it's powered by a trained LLama model. Honest limitations are coverage and freshness. Id love some feedback on where the data looks wrong or is stale. Question for the room - what to prioritize if you're working with messy, multi-source retail/pricing data? Is freshness or co...

Show HN: OpenScreenShot: open-source full-page screenshot and annotation tool https://ift.tt/T8qWSwA July 9, 2026 at 02:19AM

Show HN: Cyrinx (36kbps Acoustic Transport) Working with Fable 5, a MacBook, and a Pixel phone, I built an acoustic transport library that is several orders of magnitude faster than existing SoTA open source options like ggwave, quiet, minimodem, or Chirp. Paper: https://ift.tt/NsC4yOc Apache 2.0 source: https://ift.tt/ykdb54f https://cyrinx.org/ July 9, 2026 at 01:59AM

Show HN: Frugon – Find which LLM calls a cheaper model could handle (local, MIT) I started leaning in on AI heavily this year, as I wanted to get more done autonomously, but then my token usage climbed dramatically to the point where my weekly quota would run out before the end of the week, sometimes a couple of days into the week. I realised I had to do something about it else I'd have to double my spend. So I decided to start tracking my cost per task type. This revealed that a lot of my spend went to searches/scans or simple things like scouting tasks. I then decided to turn this into a simple CLI tool that can be used to read your OpenAI-style logs locally, and analyze the cost and compare this spend to other models, then show you how much you could potentially save by switching those calls to a cheaper model. When you run analyze you get an offline estimate priced against LiteLLM and gated by LMArena tiers. The general savings bands come from the research published by RouteLLM...

Show HN: I ran 70 MCP servers in a sandbox and logged what they do https://ift.tt/BPGXRhZ July 8, 2026 at 11:44PM

Show HN: Turbo – An open-source, fast HTTP server with a real-time config GUI https://turbo.okzgn.com July 8, 2026 at 01:17AM

Show HN: Fortress – a stealth Chromium so your agents stop getting blocked https://ift.tt/ZBY5j0f July 8, 2026 at 01:08AM

Show HN: Free Mermaid Diagram Editor I've been slowly adding some new free tools to Moxie Docs (partly for SEO, partly to illustrate some of our feature sets before any commitment) for some reason this mermaid editor one blew up on Google rankings so I figured I'd share in case people find it useful! We also have ADR, AGENTS.md, LLMs, and a few other free tools. https://ift.tt/ydhTaJn July 8, 2026 at 12:29AM

Show HN: Autoops – Multi-region data and service mesh operated by a Makefile Hi HN, Stefan here. autoops is an infrastructure automation framework I have been using at my previous company and is now opensourced. It has been the base layer running various products and projects, and also for quickly standing up client infra. It works with Debian-based systems (apt) and sets up a WireGuard mesh with peer discovery and built-in DNS (Wesher), a distributed S3-compatible object store (Garage), and a reverse proxy and load balancer (Traefik). It supports service autodiscovery (Traefik-kop) and can be horizontally scaled to up to 150-200 nodes. As a classical example of "roll your own k8s subset using scripting", it is not yet fully integrated and currently, you need 1) to define at least a PyInfra inventory, 2) depending on whether you run containered services, a Docker Compose file, and 3) for horizontal scaling with autodiscovery, a Traefik config. The PyInfra scripts are put toge...

Show HN: Logo Design for Busy Founders General purpose illustration tools like adobe illustrator or affinity have a great amount of flexibility but come at the cost of complexity that isn't needed for a logo design tool. So I trimmed down the fat to a minimal set of 10 tools acting on a logo grid, when combined together makes it easy to build quite a surprising variety of logo marks pretty fast. This was a very interesting project unlike most of the work i've done over the years, this iteration (the 4th) came from progressively whittling down (vs up) affordances, if a combination of tools could do what one did, it was cut, if that tool didn't seem to behave cohesively with the rest (perhaps potentially breaking the user's mental model of the editor) it was cut. Initially i had features like layers, multiple fill colors. Naively i felt my goal was to build a minimal set of tools that achieved "logo-completeness", but i realised that would just give me a terribl...

Show HN: Tracking how much of the HN front page is AI-generated For the past few months, I've been sending every story that reaches the HN front page through Pangram's AI detector and noting the scores. The reason I made it is that I kept noticing posts that sounded like AI-generated to me. Sometimes the comments pointed it out, sometimes a post was near the top all day and no one said a word. I wondered if the share was really increasing or if I was just primed to see slop everywhere. How it operates: The site identifies the top 30, gets each article, and evaluates the text using Pangram. Besides the live front page view, there are daily and monthly trends, with leaderboards for domains and authors that keep scoring high. I personally find it quite helpful as a sanity check on my own intuition before declaring something AI in the comments. 6,500+ stories in, it turns out the front page is still very human after all, which is the part that shocked me the most. A fraction of 13%...

Show HN: I built an encrypted BLE dongle for pasting stuff to air-gapped devices Definitely one of those "20 minute adventure gone wrong" projects where all I wanted initially was a quick wireless rubber ducky for bitlocker keys and the like and then I kept adding stuff like AES-256..... Currently working on adding WebAuthn/FIDO support because the hardware is already there and scope creep is a lifestyle at this point. Would love feedback, especially on the security side. Repo and PCB files are fully open source. https://ift.tt/FsxcTCo July 4, 2026 at 10:13PM

Show HN: Reading Assistant Physical Books Meta RayBans Reading technical books is hard. Unknown words, confusing phrases, and misunderstood concepts requires opening your phone, starting Claude, and working with Sonnet through a series of exchanges, before finally getting it. Focusing back on reading after such a context switch can be difficult. Repeated multiple times and your attention span is gone. Fix: An assistant understands your book deeply and answers inquiries through voice while you read, side-stepping the current process entirely. All you have to do is: - Upload a PDF version of your physical book and start reading - Say "Hey Lumos" along with your inquiry ("why does det(A) mean the matrix loses volume?") - Assistant researches the contents of the book and responds - Continue reading until you need help again It's in extreme beta but works well enough where I can't read a book without it. If you're interested in trying it out, reach out. July...

Show HN: Pieces – Social network for people Hey HN, long time lurker first time poster. I built a social network called PIECES. After building a private blog last year after I had to get off IG and Substack, I decided to productize it. It's here now. It has a dedicated web experience + iOS/Android. Would love if you tried it out! https://ift.tt/RIa5zFy July 1, 2026 at 06:30PM

Show HN: Capcat – CLI/TUI to Archive Articles as Markdown and HTML (FOSS) Capcat is a python based CLI/TUI FOSS utility for Ethical archiving of given website or RSS source. The github repo: https://ift.tt/z4gQCMR It is generated with NLP, context-engineering, spec-driven development and LLMs. Fully functional at http://capcat.org , with instructions for usage and documentation. The project started from my personal needs of simple archiving with structure and moved to product design/MVP exercise. I am longtime HN user, and the most value I got in years of reading is always deep in the comments section. For HN Capcat uses the official API, with rate-limits, identifies honesty with clear user agent and skips paywalled content. All usernames are anonymized with a link to the user profile. The content is delivered in Markdown format (Obsidian ready with frontmatter) and optional HTML with dark/light themes. Every source has its own YAML config file for separate control and PDF size lim...

Show HN: Salt – a systems language with Z3 theorem proving in the compiler https://salt-lang.dev July 1, 2026 at 06:05PM