Show HN: LegendAI-Amazon Sales Tracker https://ift.tt/Qmk4XB9

Show HN: LegendAI-Amazon Sales Tracker Get Actual Not Estimate Amazon Product Data! Real-Time Amazon Sales and Data Insights. Get accurate sales tracking, demand analysis, and customer behavior insights to optimize listings and boost profits. Stay ahead of the competition with LegendAI Tracker. https://ift.tt/IazCVjU May 24, 2023 at 08:21AM

Show HN: I made a Chrome extension to hide history in ChatGPT https://ift.tt/Ocfv2T3

Show HN: I made a Chrome extension to hide history in ChatGPT https://ift.tt/dF9kvCS May 24, 2023 at 07:15AM

Show HN: Mental Models for Startup Founders https://ift.tt/ClMHVqh

Show HN: Mental Models for Startup Founders Hello HN, I launched Wingify/VWO (Visual Website Optimizer) here on HN in 2010. The initial momentum and feedback I got from this place was a key reason I was able to profitably bootstrap the company to roughly ~$30MN ARR. Over the last 2 years, I have been writing a book for startup founders that's informed by my experience with Wingify and many failed attempts before it. It's finally done, so thought of launching it on the same forum where it all started for me :) There are a total of 68 mental models covering various aspects of building a startup: - Choosing markets - Building products - Ecosystems and partners - Thinking about Moats - Approaching marketing - B2B v/s B2C - Hiring & culture Unlike other books, I'm not sharing my story and neither take a very prescriptive approach. Rather, I use mental models to shine light and provide a tractable way of looking at problems an entrepreneur encounters during her startup. I understand that entrepreneurship cannot be systemized, but I'm hoping some of the mental models I share help in clearer thinking and faster decisions. Would love your feedback on the book: https://ift.tt/PyKOEmf... If you find it useful, please share it with others in your network. https://ift.tt/2VYg4Xm May 24, 2023 at 02:27AM

Show HN: Defguard – open-source security army knife (Identity,MFA,VPN,Yubikey) https://ift.tt/aXyjYhd

Show HN: Defguard – open-source security army knife (Identity,MFA,VPN,Yubikey) https://ift.tt/ITOuq8j May 24, 2023 at 06:27AM

Show HN: Dark Mode for HN https://ift.tt/L4vk7wQ

Show HN: Dark Mode for HN https://ift.tt/xkGOoKd May 24, 2023 at 04:41AM

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Show HN: YouTube Summary CLI https://ift.tt/GN79Vnu

Show HN: YouTube Summary CLI This simple tool was born out of a personal need for a more efficient way to consume YouTube content. It provides you with a short and segment-wise summary of a YouTube video. Each segment is printed with a link to that part of the video. I know there are several Chrome extensions that do this, butI work with different browsers so I wanted a simple CLI app for that. Hope this helps anyone else. Any feedback would be much appreciated https://ift.tt/YFQUqW7 May 23, 2023 at 07:03AM

Show HN: JavaScript Office Library: View and Convert Word, Excel, PowerPoint https://ift.tt/r7XwHCB

Show HN: JavaScript Office Library: View and Convert Word, Excel, PowerPoint Hi HN, Igor here. We’re super excited to officially launch PSPDFKit for Web Standalone’s Office-to-PDF functionality ( try the demo [0] ). PSPDFKit for Web Standalone is a JavaScript document library that runs entirely in the browser - no external dependencies or MS Office licenses required. It’s compatible with any JavaScript framework. What differentiates our Office-to-PDF from others is that it’s built from the ground up with no reliance on open source. When converting to the PDF format, it enables additional document capabilities, like page manipulation, redaction, or editing content. Office document capabilities [1]: - View and open Word, Excel, and PowerPoint files - Convert to PDF, PDF/A, or PNG - Print - Preview Office-to-PDF capabilities [1]: - Edit content - Annotate - Assemble multiple documents - Manipulate pages - Create and fill forms - Add signatures - Redact content Our documentation includes sample code [2] and quickstarts for JavaScript [3], React [4], Vue.js [5], Angular [6], SharePoint [7], and others. Let us know what you think or if you have any questions. [0] https://ift.tt/zjCVgpT [1] https://ift.tt/oXtn6kB [2] https://ift.tt/esYSNbt [3] https://ift.tt/u5h30QL [4] https://ift.tt/xuwtnUb [5] https://ift.tt/kWuieKI [6] https://ift.tt/kRChBXj [7] https://ift.tt/SEqlikD May 23, 2023 at 05:10AM

Show HN: MrScraper AI – Dead simple web scraper (powered by AI) https://ift.tt/nVvMbjf

Show HN: MrScraper AI – Dead simple web scraper (powered by AI) I've decided to test a new approach in my web scraping app. What do you think? https://ift.tt/4xBRrWk May 23, 2023 at 03:20AM

Show HN: I made Hazumi, a modern HN reader for iOS https://ift.tt/Q36dK7S

Show HN: I made Hazumi, a modern HN reader for iOS Hello HN, I'm thrilled to announce the launch of my first app, Hazumi, a Hacker News reader, available for free on iOS! I’ve been lurking on HN for around 2 years while working on this project seeing people post amazing HN reader apps of their own. I’ve always figured Hazumi wasn’t good enough yet to post here but if I wait around until I’m ready, I’ll probably never share so here goes… Hazumi is a modern Hacker News app for your pocket with some intentional limitations. Stories are displayed on a simple colourful card, with images, that condenses all the information you need at a glance. Out of the box you get accessibility features for system settings like light/dark mode and text size. Others are controlled in app for opening stories in a Web View vs externally via Safari, defaulting to Reader Mode and reducing animation bounciness. You can browse top, new and best sections, limited to 30 stories each, which refresh every hour on the server. I’m not a fan of infinite scrolling or spending a lot of time reading news. I just want to get in and get out while keeping up on the latest. Other notable features: - Basic search - Widgets for your Home and Lock Screen - Apple Watch app - Warns you of non-HTTPS links There are a few “PRO” features that require a subscription ($/€1.99 monthly): - AI summaries of comments on stories that have at least 30 root level comments - In app newsletter (yesterday’s top 10 stories) - Bookmarking with iCloud support - Themes (change the colour of the cards) - Supporting indie developers and keeping the lights on for Hazumi Working on: - Better comments/tappable links - Enhancing search - More themes Being the first version, it's very early days for Hazumi and there are bugs that I’m working on fixing. I'm eager to improve it and shape its future based on your input. I welcome any feedback you may have, whether it's about existing features or ideas for new ones. Your thoughts will be instrumental in shaping Hazumi, making it an even more useful tool for tech news enthusiasts. Please give it a try and let me know your thoughts. P.S. Shout out to MB and MC for your awesome feedback during the TestFlight beta! https://ift.tt/R9xMAn3 May 22, 2023 at 10:31AM

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Show HN: Ntfy.sh – open-source push notifications via PUT/POST https://ift.tt/up8HGSY

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Show HN: We found the grave of hacking legend Mel Kaye https://ift.tt/qsWNMyu

Show HN: We found the grave of hacking legend Mel Kaye For 40 years, since "The Story of Mel" was published, the existence of the hacking legend Mel Kaye was in doubt. Until today. We found his final resting place, which unfolds the life and work of the Mel (Melvin) Kaye (Kornitzky), who hacked a blackjack game for the LGP-30 and RPC-4000 some 70 years ago, in Glendale, Los Angeles. https://ift.tt/5govEBi May 22, 2023 at 09:51AM

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Show HN: Rust Port of Pwnpasswordsdownloader https://ift.tt/DQYA2ZP

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Show HN: WikTok – A Recommendation UI for Wikipedia https://ift.tt/snz8K54

Show HN: WikTok – A Recommendation UI for Wikipedia Hi HN, WikTok is a UI for Wikipedia that lets you quickly swipe (or use your arrow keys) to navigate between random and recommended articles (based on the previous articles you interacted most with). It's just a fun project I hacked together this weekend, so may be a little rough around the edges, but I'd love to get your thoughts. Let me know if you have any suggestions (or find any interesting articles!) Cheers, https://wiktok.org/ May 22, 2023 at 04:59AM

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Show HN: Horizon – Programmatic Prompt Generation and LLM Configurations https://ift.tt/ycAjewg

Show HN: Horizon – Programmatic Prompt Generation and LLM Configurations Hi HN. I heard you like dev tools and AI, so we wanted to share our project that we’ve been working on. We’re working on Horizon [1] - a higher level abstraction for LLMs so that developers can spend less time trying to grapple with LLMs to make them work and more time with users. This is the starting feature set which takes an auto-ML approach to identify the optimal LLM model, hyperparameters, and prompt - instead of just giving you the tooling to figure it out yourself. You can read more about it in our documentations. Our view is that as LLMs become increasingly commoditized and prompts become easier to develop all the while fine-tuning is not realistic for the many organization out there - the configuration, optimization, and management will become much more difficult at-scale (consist with Andrej’s recent post [3]). The idea came as we were trying to build LLM apps (think sales outreach, ppt generation, support, etc. etc.) last fall and realized with this tool we could easily build many of the applications with Horizon in minutes versus that days it took us before. Let us know what you think! [1] https://ift.tt/iHj6lWV [2] https://ift.tt/wmnzltS [3] https://twitter.com/karpathy/status/1655994367033884672?s=20 https://ift.tt/ZPrHAp2 May 21, 2023 at 09:46PM

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Show HN: AI-based app that helps you raise funding One app for the Best Fundraising Experience. Founders describe their ideas, and then an app produces: - A list of competitors using similarity search. - A list of best-fit investors based on their previous investments, the idea, and competitors. - Detailed analysis on each investor. https://ift.tt/ELYRjXG May 21, 2023 at 09:37AM

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Show HN: Pretty code snippets for PowerShell in the terminal I had some fun learning to parse PowerShell code with the built-in abstract syntax tree for this one. I originally wrote it to add some color to the output in PowerShellAI. https://ift.tt/DHpy1fP May 21, 2023 at 01:59AM

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Show HN: Reimplement the Embedded Security CTF Game in Elixir/LiveView I've heard good words about Elixir language and Phoenix/LiveView frameworks here in HN for quite sometimes, but haven't had any chance to use it at work. So, as an exercise, I decided to reimplement from scratch the famous https://ift.tt/H0ijXfM game (which I've been playing on and off for almost a decade). You can try playing it at https://ift.tt/QxmsowX https://ift.tt/6HNerML May 21, 2023 at 05:12AM

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Show HN: Loofi – Our AI-Powered SQL Query Builder https://ift.tt/DN0CoXi

Show HN: Loofi – Our AI-Powered SQL Query Builder Hi HN Community, We're a team of software engineers who've experienced the complexity of crafting SQL queries. To address this, we've developed a tool that simplifies this process. Introducing Loofi, an AI-powered SQL Query Builder. Loofi streamlines query building and leverages AI algorithms for intelligent recommendations. We value community feedback and invite you to try out Loofi. Your thoughts and suggestions will help us improve our tool. Here's the link to Loofi: https://loofi.dev/ For any questions or assistance, feel free to reach out. We're eager to engage with this community. Your valuable feedback is much appreciated! https://loofi.dev/ May 20, 2023 at 10:19PM

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Show HN: YouTube Full Text Search – Search all of a channel from the commandline https://ift.tt/F9AGZH2

Show HN: YouTube Full Text Search – Search all of a channel from the commandline yt-fts is a simple python script that uses yt-dlp to scrape all of a youtube channels subtitles and load them into an sqlite database that is searchable from the command line. It allows you to query a channel for specific key word or phrase and will generate time stamped youtube urls to the video containing the keyword. https://ift.tt/fVKE7GH May 20, 2023 at 02:18AM

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Show HN: AI/ML Weekly Digest – Curated by LLM, Summarized and Sentiment-Analyzed Hey, HN community! I'm excited to share the fifth issue of our AI/ML Weekly Digest. This innovative newsletter uses the power of GPT-4 to analyse and curate the most relevant and exciting AI/ML stories from Hacker News. This week I also share with our subscribers a curated list of resources during my learning journey https://ift.tt/2DEhQH1 GPT-4 scours through the top stories on Hacker News to bring you a concise summary and sentiment analysis of the hottest AI/ML news each week. Subscribe & Stay Updated To get the complete weekly digest delivered straight to your inbox, subscribe now at https://ift.tt/t5XwAjD . You'll receive a comprehensive, easy-to-read summary of the essential AI/ML news and the sentiment analysis for each story. Stay on top of the latest trends, breakthroughs, artificial intelligence and machine learning discussions! Feel free to leave feedback, questions, or suggestions in the comments. Looking forward to hearing what you think! Happy reading! https://ift.tt/hmqcUgB May 19, 2023 at 10:17AM

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Show HN: ReColor AI – Transform Your Sketches into Vibrant Art with AI https://ift.tt/vzI76nJ

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Show HN: Numtease – My new number word puzzle game https://ift.tt/2SciZIQ

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Show HN: Cosigny - Crowd source the best credit card and loan terms. https://ift.tt/h0mBa1I

Show HN: Cosigny - Crowd source the best credit card and loan terms. The goal is to create spreadsheet with crowd sourced data regarding credit products and profiles so we can see how we measure up and find the best deals. Don't go too hard on me. I linked a few google sheets together. Hope you find it useful. https://ift.tt/V17anje May 18, 2023 at 01:11AM

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Show HN: Printnanny.ai, Monitoring for 3D Printers https://ift.tt/tujamn7

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Show HN: ts-npm-template – Template to bootstrap NPM package with TypeScript https://ift.tt/Fwc1uIC May 14, 2023 at 08:36AM

Show HN: WhyBot, making GPT-4 question itself https://ift.tt/cimn07P

Show HN: WhyBot, making GPT-4 question itself Hi HN — we’re John and Vish! We built WhyBot, a tool to help you deeply explore a question or topic. You ask a question, and WhyBot responds by building an ever-expanding knowledge graph. It does this by recursively generating answers and follow-up questions. You can change its persona to change the flavor of the generations (try toddler mode!). We originally built this for the AngelList Agent Hackathon ( https://twitter.com/AqeelMeetsWorld/status/16502799744050421... ) and got a lot of interest from folks asking to play around with it. So we thought it’d be fun to brush it up and release it as a web app! It’s a work in progress and we plan on adding more features, such as saving, sharing, focusing on one branch and potentially executing code. We hope you enjoy playing around with it and would love to hear any of your feedback or thoughts. https://ift.tt/jYHrROM May 14, 2023 at 12:17AM

Show HN: Bytebase – a GUI-based database schema change tool for developers https://ift.tt/nRByaCc

Show HN: Bytebase – a GUI-based database schema change tool for developers https://ift.tt/BVWlS17 May 13, 2023 at 02:06PM

Show HN: MotivationalSMS – Daily Inspirational Quotes by SMS https://ift.tt/gqUB3An

Show HN: MotivationalSMS – Daily Inspirational Quotes by SMS https://ift.tt/5mqEwK2 May 13, 2023 at 08:01AM

Show HN: Kaizen, music updated over time like software https://ift.tt/hX26zLl

Show HN: Kaizen, music updated over time like software Hi, I'm co-founder and CTO of Kaizen. The project started as just a weekend project with me and a music producer friend. It has since grown into a community of artists looking to share their music more frequently and engage with their fans more consistently. We've just launched on ProductHunt: https://ift.tt/HeGNYI3 We would love any thoughts or feedback! https://kaizen.place/ May 13, 2023 at 03:46AM

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Show HN: Explore career opportunities in AI-first companies https://ift.tt/y1GoRn8

Show HN: Explore career opportunities in AI-first companies Like many unemployed right now, I've been playing with LLMs and learning a lot. It's an exciting space right now, with many opportunities. So I curated over 100 companies in the space and joined all their opportunities (not only tech) in a single site. I believe it can be interesting for many people recently affected by layoffs and looking to restart in a market that is booming — for better or worse. Exploring the data about the market is also something that I'm starting to look into [1]. Companies can be added for free and get highlighted by sponsoring the site. I hope that someone out there who is searching for a new job finds this helpful. 1- https://ift.tt/X7itedg... https://ift.tt/T4lA8F0 May 12, 2023 at 12:10PM

Show HN: The Leica MPi: A Leica M2 with a Raspberry Pi-Powered Digital Sensor https://ift.tt/ytw9oqQ

Show HN: The Leica MPi: A Leica M2 with a Raspberry Pi-Powered Digital Sensor PetaPixel article: https://ift.tt/BqL5Vmx... https://ift.tt/9GimbUn May 12, 2023 at 07:25AM

Show HN: Picopins, a CLI Pinout for the Raspberry Pi Pico https://ift.tt/JAwig03

Show HN: Picopins, a CLI Pinout for the Raspberry Pi Pico I was experimenting with ways to store pinout data to generate the Pico pinout website [1] rather than hand-editing HTML- and got carried away. Pretty much all the heavy lifting is done by the Python library "rich" [2], which makes colourised/structured output on the command-line dangerously easy. * [1] - https://pico.pinout.xyz * [2] - https://ift.tt/vAmfu2W https://ift.tt/FLtdHeC May 12, 2023 at 09:08AM

Show HN: Terrace: a library for writing more concise and maintainable PyTorch https://ift.tt/tSx1pAB

Show HN: Terrace: a library for writing more concise and maintainable PyTorch I've been using pytorch in my research for a while now, and I've been building up a collection of utilities that have made my life a whole lot easier. I've finally gotten around to documenting and open-sourcing this library. If you use pytorch, I hope it can help your work as well. Let me know what you think! https://ift.tt/ClRaN5A May 12, 2023 at 08:59AM

Show HN: ReStage AI – virtual staging for your photos https://ift.tt/cHlEDsv

Show HN: ReStage AI – virtual staging for your photos https://restageai.com/ May 12, 2023 at 08:46AM

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Show HN: Slatebox, editable visuals based on natural language https://ift.tt/XpQkc3j

Show HN: Slatebox, editable visuals based on natural language Hey HN - my name is Tim and I created Slatebox. Slatebox is a visualization collaboration platform that lets you create editable mind-maps, diagrams, SWOT Analyses (w 100s of other templates) and more -- all based on natural language through AI. It's like Miro but with AI superpowers. Would love to know what you think. I'll be releasing a team pro version soon where teams can auto-diagram their internal ecosystem, including code repositories. https://slatebox.com May 11, 2023 at 11:35AM

Show HN: AutoGPT for Ethereum https://ift.tt/4OuNRdz

Show HN: AutoGPT for Ethereum I built this on a weekend, I would love to get some feedback on the app. https://www.etherpal.xyz/ May 11, 2023 at 05:25AM

Show HN: Interactive story map built using Google 3D Tiles and deck.gl https://ift.tt/LC4wUNk

Show HN: Interactive story map built using Google 3D Tiles and deck.gl https://ift.tt/2bgiUP8 May 11, 2023 at 02:52AM

Show HN: Mineo.app – Better Python Notebooks https://ift.tt/KafOFxu

Show HN: Mineo.app – Better Python Notebooks Hello everyone, I would like to introduce our startup to HN: Mineo.app. Mineo.app is a production-ready SaaS Python notebook that provides a complete environment for building your data applications: Dashboards, Reports, and Data Pipelines based on Python notebooks. Key features: * Superpowered jupyter-compatible Python notebooks with extra goodies like: version control, commenting support, custom docker images, etc... enhanced with no code components that allow to create beautiful dashboards and reports. * Data Pipelines: Ability to schedule and run one or more notebooks. * Integrated file system to manage your files and projects with detailed permissions and groups. We have a freemium licensing model, so you can start using Mineo just by registering with your Github/Google/Microsoft account for free without a credit card. And it's free for educational purposes ;-) Diego. https://www.mineo.app/ May 9, 2023 at 09:19AM

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Show HN: AST-grep, a grep/eslint/codemod hybrid tool, powered by tree-sitter. https://ift.tt/qYcegtU

Show HN: AST-grep, a grep/eslint/codemod hybrid tool, powered by tree-sitter. It is heavily inspired by semgrep, but intends to be an AST-base searcher/linter/rewriter. https://ift.tt/oyz8lMY https://ift.tt/oHkDaPW May 10, 2023 at 01:14PM

Show HN: Marketing software for solopreneurs who don't like marketing https://ift.tt/xV2u4nH

Show HN: Marketing software for solopreneurs who don't like marketing Hey folks, I made 2Quiet2Market for busy solopreneurs who are "too quiet to market" what they build. I've been building this since September 2022 because I am a software dev who likes to talk factually but doesn't enjoy to "pound the drum" and "toot the horn" to market my stuff. On the other hand, if I don't market my stuff, people won't know about it and won't buy it. Bummer. So what did I do to make life better for quiet or factual people like me who like to build stuff and want to make money with it? I made a web-based app that helps you create your own habit for marketing. When people have a habit, they are more likely to do what needs to be done (marketing in this case). The free plan of my SaaS contains these tools: * Positioning blackboard * Story Composer * Experiment Designer Positioning blackboards provide you with Lego-like building blocks to make your product look awesome and desirable. They clarify your marketing until you reach a story you want to tell that will make your customer buy. Story Composer helps you create those stories step-by-step, and Experiment Designer lets you plan which stories to tell on which marketing channels, with a recipe on how to execute each marketing experiment. Already with the Free plan, you can create your specific marketing playbook and turn it into a habit. The Free plan allows you to have 1 project with 2 blackboards, and an "invite" feature to have a friend look at your stuff. There are two paid plans as well: - the Pro plan offers unlimited projects and blackboards, as well as an integration with the Todoist.com task management system. It automatically turns experiments into to-dos to get them done. And: The Pro plan also allows you to edit other people's stuff if they invite you to do so. - the Advanced plan adds GPT to spice up the factual marketing copy from Story Composer, in order to make it more engaging for your audience. Have fun, please try it out, and tell me whether you can use it to market your own stuff to the world. It comes with interactive demos on its dashboard, and with comprehensive docs at https://ift.tt/VmH3bdC Cheers, Matthias https://ift.tt/H72Pa18 May 10, 2023 at 12:40PM

Show HN: ChattySurvey – Super easy AI powered conversational surveys https://ift.tt/z68mAth

Show HN: ChattySurvey – Super easy AI powered conversational surveys My name is Richard D'Lonesteen I'm the CTO of ChattySurvey. This is the 6th startup idea I'm working on in the last 12 months. In a way, it was born because of the pain of doing MOM tests and understanding how tricky it can be to create good surveys and conduct them without falling for the flattery trap. We are building perhaps the simplest to create surveys in the world(let me know if I'm wrong). Currently, you can get super powerful(NPS, CSAT, PMF etc..) surveys just by filling out 1 text field with the name of the subject. We are leveraging GPT to conduct the surveys and analyse them. And so far it's doing an unbelievable job, but don't take my word for it - check it out! We are looking for pilot users and problems that we can help to solve! Thank you! https://ift.tt/MwuFNKl May 10, 2023 at 08:25AM

Show HN: Askhn.ai – generate answers based on expertise on HN https://ift.tt/9RVegtG

Show HN: Askhn.ai – generate answers based on expertise on HN https://askhn.ai/ May 10, 2023 at 07:10AM

Show HN: LLM, a Rust Crate/CLI for CPU Inference of LLMs (LLaMA, GPT-NeoX, etc.) https://ift.tt/CxYVjHe

Show HN: LLM, a Rust Crate/CLI for CPU Inference of LLMs (LLaMA, GPT-NeoX, etc.) G'day, HN! I'm one of the maintainers of `llm`. I've been working alongside a trusty group of contributors to bring this project to life, and we're now at a point where we're ready to share it with the world. Large language models (LLMs) are taking the computing world by storm due to their emergent abilities that allow them to perform a wide variety of tasks, including translation, summarization, code generation, and even some degree of reasoning. However, the ecosystem around LLMs is still in its infancy, and it can be difficult to get started with these models. `llm` is a one-stop shop for running inference on large language models (of the kind that power ChatGPT and more); we provide a CLI and a Rust crate for running inference on these models, all entirely open-source. The crate can be embedded in your own projects, allowing you to easily integrate LLMs into your own applications. We hope that `llm` can help to alleviate some of the pain points that users face when working with LLMs. Our goal is to build a robust solution for inferencing on LLMs that users can rely on for their projects, so that we can provide a moment of peace in the chaos of the LLM ecosystem. At present, we are powered by `ggml` (similar to `llama.cpp`), but we intend to add additional backends in the near-future. This means that we currently only support CPU inference, but we have several ideas in mind for how to add GPU support, as well as other accelerators. We're looking for feedback on the project, and we'd love to hear from you! If you're interested in contributing, please reach out to us on our Discord ( https://ift.tt/mCKFvMj ), or post an issue on our GitHub ( https://ift.tt/JUi3NLm ). https://ift.tt/pdQtLKR May 9, 2023 at 12:37PM

Show HN: VizGPT – Make and edit data visualizations with a chat interface https://ift.tt/rbFLqjy

Show HN: VizGPT – Make and edit data visualizations with a chat interface VizGPT provides a chat interface to make and edit data visualizations. Not only can it create visualization with natural language query, but you can continue transform or edit your visualization in context. You can build complex visualization with chatting step by step instead of design a large prompt at once. I am also combing tradition drag and drop interface with chat interface together to make visualization making process much easier and flexible. Online playground: https://www.vizgpt.ai/ https://ift.tt/IlL0J8s May 9, 2023 at 11:16AM

Show HN: JavaFiddle – Compile, Run and Share Java code fully client side https://ift.tt/o1l4PmD

Show HN: JavaFiddle – Compile, Run and Share Java code fully client side https://ift.tt/KlTpnJ4 May 9, 2023 at 10:37AM

Show HN: Interactive Git Training Use Cases https://ift.tt/jd9hnz6

Show HN: Interactive Git Training Use Cases Hello, I have been working for years with junior developers and I find that many of them struggle to get out of some "delicate situations". Example "detached head", "wrong rebase", "for some reason I see duplicate commits" and so on. To help my colleagues I came up with a list of git uses cases that can be tested in a sort of interactive playground using a shell script that will set-up the use case and then we can go ahead and try to solve the problem. The main advantage here is that all use cases are reproducible and that by looking at the shell script we can see how we got in the mess in the first place. Everything is written in posix shell and should work on linux, macos and windows (with git bash). Any comments, feedback and contributions are very welcome ! PS: This is somewhat inspired by https://ohshitgit.com/ https://ift.tt/k0wBhMs May 9, 2023 at 11:05AM

Show HN: We built an end-to-end encrypted alternative to Notion https://ift.tt/qrwI0js

Show HN: We built an end-to-end encrypted alternative to Notion Hello HN, Over the last year we've been building snote.app, a Privacy focused, End-to-End Encrypted alternative to Notion. You can write, plan, collaborate and get organized - it allows you to take notes, store files, add tasks, manage projects & more. Whether you're working solo or in a team. We are hoping to use this post as an opportunity to collect feedback from fellow hackers. If there's anything we can do better, please let us know https://www.snote.app/ May 9, 2023 at 09:47AM

Show HN: Metarank – open-source hybrid search with LLMs https://ift.tt/RTGVuOn

Show HN: Metarank – open-source hybrid search with LLMs A small demo for a Metarank open-source project I'm maintaining. https://ift.tt/13o6DIc May 9, 2023 at 07:52AM

Show HN: Cptn.io – open-source integration platform https://ift.tt/MPnwDod

Show HN: Cptn.io – open-source integration platform Hi, I am Krishna Thota. I am building an open source integration and data platform( https://cptn.io ). The product is MIT licensed and the repo is at https://ift.tt/yZsAogq . I have started on my startup journey an year ago and launched a monitoring platform called DevRaven. Unfortunately the product did not takeoff as expected. That story is for another day. But during the course of building the product, I have built several integrations leveraging MQs and Cloud Functions. While building and deploying Cloud Functions for happy paths is easy, I had to monitor logs for failures, build retry mechanisms or manually process failed events, keep instances running to prevent cold start timeouts. It can also get expensive with charges for MQs, server time for running cloud functions etc and costs can be unpredictable. I thought of building a platform where I can build integrations quickly, have the ability to look at incoming/outgoing events, look at logs, retry any failed events etc. And finally, predictable costs for running the infrastructure. cptn.io provides all these capabilities and more. You can build pipelines to integrate with any cloud services, send data from your backend to data warehouses, listen to web hook events etc. The platform can be integrated into any stack by sending events to HTTP end points. Instead of trying to build a business first or launch an open source product under restrictive licenses, the platform will be available under MIT license so any user or customer can use it. There is no ee folder or complex dual licensing and I am also committing to releasing SSO under MIT. The plan is to offer a managed service in the cloud at a later time, accept sponsors for prioritizing features for enterprise customers and charge for enterprise support. It should take less than 5 minutes to get the platform running on your machine. Welcome any feedback, feature requests, PRs and bug reports. https://cptn.io May 8, 2023 at 01:45PM

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Show HN: Automatic Domain Verification https://ift.tt/3VqiSxH

Show HN: Automatic Domain Verification The Domain Verification protocol stores a DNS TXT record at a DNS name derived from a hashed "verifiable identifier" (email, telephone, DID), enabling anyone that can prove control over the verifiable identifier to prove authority for the domain name, whilst preserving the privacy of the authorised party. Once setup, the record enables automatic domain verification for any service provider. This record could be automatically setup by domain registrars upon domain registration (with registrant opt-in) creating a fast lane for verification with service providers many new small businesses use (eg Google Ads, Facebook, Office365, Dropbox, etc). ===== Quick sidebar: This was originally submitted to HN under the title "Show HN: Make domain verification as easy as verifying an email or phone number" 3 days ago [1]. It was doing really well (#3 on front page) then totally disappeared from front page and went to bottom of page 1 of Show HN. After an email exchange with dang (incredibly helpful as always), he explained that it got flagged with the "overheated discussion detector" and it turned out I caused this by diligently responding to every comment as fast as my fingers would type because I wanted to keep engagement going. Helpfully dang took the flag off it about 12 hours later after our email exchange, but understandably the momentum was lost. So I feel like it kinda got killed, just as it was picking up pace and as the US west coast was waking up. So I am humbly reposting it with a modified description based on the comments of the last post. ===== This is a project I've been working on for a little while and I'm interested in your feedback and point of view. Many of us would have verified a domain name by pasting a string into a DNS TXT record. These methods are currently being discussed and standardised at the IETF [2]. Let's Encrypt's DNS-01 method [3] is probably considered the state of the art. The differences between DNS-01 and Domain Verification protocol are: - DNS-01 requires a new TXT record for each service provider. With Domain Verification Protocol, multiple service providers can use the same record. - Instructions to setup a DNS-01 TXT record are instigated by the service provider, whereas a Domain Verification Protocol record can be setup independently by a user or a domain registrar. They could even pre-populated by a registrar upon domain registration (with registrant opt-in) - There’s no concept of permissions in DNS-01, the act of creating the record gives the user full access for the domain with the service provider. With Domain Verification protocol multiple records can be setup, limited permissions could be setup for different third parties. For example give a marketing agency authentication to claim the domain on social media but nowhere else. I'm still working on licensing but creating these records will always be free. I hope to find service providers that see significant upside in reducing friction for user onboarding that are willing to pay to license it. Worked example: Let's say you want to authenticate the user with the email user@example.com with the domain dvexample.com, these are the steps: a. HASH(user@example.com) -> 4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg b. Store Domain Verification record at: 4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg._dv.dvexample.com c. TXT record determines permissions and time limit: @dv=1;d=Example user email;e=2025-01-01;s=[seo;email];h=4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg Thanks for taking a look, Elliott 1. https://ift.tt/uMhNJ92 2. https://ift.tt/bUhXVP1... 3. https://ift.tt/Ra5ctVN https://ift.tt/QKuoBfR May 8, 2023 at 01:06PM

Show HN: Play SineRider, a math puzzle game built by teenagers at Hack Club https://ift.tt/G8TMLmd

Show HN: Play SineRider, a math puzzle game built by teenagers at Hack Club Messing with your TI-84 graphing calculator is a rite of passage for every teenager who has ever been bored in a math class. In 2013 I was that teenager, and it gave me an idea for a tiny game about sledding on graphs. This project grew into my white whale, and I spent my twenties trying and failing to finish it alone. I shelved the game when I started working for Hack Club in 2018—until last May, when a few community members took it off the shelf. The project took on a life of its own, and turned into a year of nights and weekends from a global team of 20+ teens in 8+ countries. Today SineRider enters public beta! SineRider is literally an infinite universe of function composition puzzles, each with infinite solutions, that range from welcoming for 9th graders to difficult for even the most serious matlab user. And every day we tweet out a fresh one to be solved with your morning coffee. We hope you enjoy playing SineRider as much as we’ve enjoyed making it. And we’re not done! Mobile support, polar coordinates, and a level editor are all on the roadmap. SineRider is a living project, to be continuously built and maintained as free OSS by the Hack Club community: https://ift.tt/LJfiWB5 The team that built the game will try to be in the comments today between high school classes and AP tests. —chris walker, creative director Watch the trailer: https://www.youtube.com/watch?v=35nDYoIwiA8 Play now: https://sinerider.com https://ift.tt/LJfiWB5 May 8, 2023 at 09:14AM

Show HN: A recipe website where all recipes are made by GPT4 https://ift.tt/BYWajkm

Show HN: A recipe website where all recipes are made by GPT4 https://ift.tt/GM3qdRE May 8, 2023 at 01:16AM

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Show HN: What do you think about my metasearch engine? https://ift.tt/h21irMs

Show HN: What do you think about my metasearch engine? https://ift.tt/Ar71alo May 7, 2023 at 04:44PM

Show HN: Filter crowded places (bars, clubs, museums) per day in major cities https://ift.tt/vbAzxZE

Show HN: Filter crowded places (bars, clubs, museums) per day in major cities Free tool to find and filter busy venues based on predicted crowd levels. This way you can find for example busy bars on Wednesday evening, or quiet museums on Sunday morning. It works in most big cities around the world. It makes it easy to find crowded places (or avoid them) when you are unfamiliar with the area. You can filter on days of the week, how busy a place is (quiet, normal, busy), and sort venues based on overall popularity, rating, dwell time, and price. https://ift.tt/12RVEj0 May 7, 2023 at 02:44PM

Show HN: PostData – The No-Fuss Way to Store and Visualize Your IoT Data https://ift.tt/8cAfDRN

Show HN: PostData – The No-Fuss Way to Store and Visualize Your IoT Data Hey everyone, I'm excited to announce the launch of PostData, a new service that simplifies IoT data storage and visualization. As developers, we know how frustrating it can be to set up complicated services like AWS just to store and view our data. That's why we created PostData – to offer a straightforward solution that gets the job done without all the hassle. With PostData, you can easily ingest, store, and visualize your IoT data in just a few clicks. We offer a forever-free plan that allows you to create new public devices with up to 20 metrics and a limit of 1000 messages per device. We also have two paid plans for private devices and higher limits for those who need them. We're looking for beta users to try out our service and provide feedback. So if you're tired of struggling with complicated IoT data storage and visualization tools, give PostData a try and let us know what you think! Thanks for your time, and I look forward to hearing from you. https://postdata.cloud/ May 7, 2023 at 05:09AM

Show HN: Devil Mode: A twisted Emacs key translator for modifier-free editing https://ift.tt/4n8L9DY

Show HN: Devil Mode: A twisted Emacs key translator for modifier-free editing https://ift.tt/ybCP75q May 7, 2023 at 05:59AM

Show HN: ChatGPT powered AI chatbot for your website https://ift.tt/nEl5FCa

Show HN: ChatGPT powered AI chatbot for your website Introducing Chabotix.com - the no-code chatbot builder powered by ChatGPT! With Chabotix.com, you can easily create a custom chatbot for your website without any coding skills. Simply upload your document and get a link to your chatbot. Your users can then interact with the chatbot, ask questions, and get answers - all without leaving your website! Whether you're a small business owner, a blogger, or a website owner, Chabotix.com is the perfect solution for enhancing your online presence and engaging your audience. Say goodbye to expensive developers and complicated code - with Chabotix.com, you can create a chatbot in minutes and start reaping the benefits of enhanced user engagement and improved customer support. Visit Chabotix.com today and start building your own chatbot! You upload a text file like this one in Chabotix website. Then you receive a personalized link to your AI chat bot. To get your own chabotix, follow simple steps: 1- Sign in to Chabotix.com, 2- Upload your document 3-You get a link to your personalized AI chatbot. Add it to your website. To add chabotix to your website, follow simple steps: 1-Add that Javascript link to your website, before closing html tag. Check this page to see an example. 2- Also use our CSS file to style it. You can also style your Chabotix bot according to your taste by using your own CSS file. Any time if you have any questions, either ask Chabotix directly here or send me a message on Twitter. https://ift.tt/WynAtVJ May 7, 2023 at 04:34AM

Show HN: Hyrable - An AI powered job description writer for recruiters https://ift.tt/vJM93eF

Show HN: Hyrable - An AI powered job description writer for recruiters Write Better Job Descriptions Faster with Hyrable https://ift.tt/N6cAiso May 7, 2023 at 04:13AM

Show HN: CrossLine – the desktop Outliner with cross-links and transclusion https://ift.tt/vWQwRMa

Show HN: CrossLine – the desktop Outliner with cross-links and transclusion https://ift.tt/YCyGFSQ May 6, 2023 at 10:46AM

Show HN: I made AI Agents accessible non-tech folks https://ift.tt/b78a1iE

Show HN: I made AI Agents accessible non-tech folks Hey HN community! Long time scroller, first-time poster :) I'm excited to introduce AiAgent.app, a user-friendly AI Agent making it accessible for say my mom and dad to mess around with this new tech. Why: I think the idea of completely automating* some of my workflows is really exciting and if more people have access more ideas will come from it. *(currently not there but I can't imagine it'll be long) Some key features include: - Run multiple agents at one (x10?) - Web search - Editing tasks - Keys included - 3rd party intergration (coming soon) - File read & write (coming soon) - Node graph-like workflow mapping (coming soon) Note: All this is all very early stage so I massively welcome constructive feedback, thoughts, and ideas :) Give it a try for free and let us know what you think! Check it out: https://AiAgent.app - Nim https://AiAgent.app May 6, 2023 at 08:24AM

Show HN: WebGPU Rotating Cube https://ift.tt/lIpSWuC

Show HN: WebGPU Rotating Cube This is a small "hello world" type WebGPU demo that fits in a single page (no NPM dependencies or build steps). The last time I touched anything graphics-related was the OpenGL 1.x era, and I've been hoping WebGPU would be a good opportunity to come up to speed with modern standard GPU programming. However, the WebGPU tutorials I found were often small fragments of code aimed at people already familiar with DX12 or Metal, and the rest involved complex NPM build steps or "clone my repo to get started" setup scripts. This page is just a plain HTML+JS file. You can edit the shaders live from the textboxes, or download it to make more involved edits. I hope it feels something like what learning JS used to be like in the days of MySpace and Geocities (in a good way). https://ift.tt/djKixb0 May 6, 2023 at 09:46AM

Show HN: Execute Ethereum Transactions Through Chat https://ift.tt/9yQ0EmC

Show HN: Execute Ethereum Transactions Through Chat https://www.etherpal.xyz/ May 6, 2023 at 10:00AM

Show HN: ReRender AI - Realistic Architectural Renders for AutoCAD/Blender Users https://ift.tt/WyQ8dVY

Show HN: ReRender AI - Realistic Architectural Renders for AutoCAD/Blender Users https://rerenderai.com May 6, 2023 at 05:15AM

Show HN: SpiderSuite: Advance GUI web security crawler https://ift.tt/6GwvAZI

Show HN: SpiderSuite: Advance GUI web security crawler https://ift.tt/qmJ736E May 6, 2023 at 01:56AM

Show HN: Ethereum address reviews, similar to Yelp https://ift.tt/tf8UPa6

Show HN: Ethereum address reviews, similar to Yelp Hi HN, Excuse me if the formatting sucks, this is a first time post. I want to introduce to you vrfd.info. A place where you can openly view and influence the reputation of any Ethereum address. Think of it as Yelp but for Eth. Addresses are classified as either verified or flagged on-chain through soulbound NFTs. A type of NFT that has no trade value as it cannot be sold. Once minted, it is stuck to the given address. The metadata of the NFT contains either information to verify the address with, this could be a social account for example. Or in the case of flagged addresses, the metadata contains proof of wrong-doing. Users can search the classification status of any address on the web app. Additionally, users can apply to either verify or report an address, provided proof. In the case of reports, users stand a chance to be rewarded. Finally, users can up or down vote other addresses. I made this tool after suffering one to many scam without having an open source library where addresses can be reported or their credentials verified. It's still a bit clunky, but the core concept works fully integrated on the Testnet. I'm shipping a big update this week to make it more responsive. Thanks for taking the time to read this. Please give me any feedback as I am looking to improve everywhere I can. https://vrfd.info May 5, 2023 at 01:30PM

Show HN: On the security of the Linux disk encryption LUKS https://ift.tt/KfsGOP3

Show HN: On the security of the Linux disk encryption LUKS In the past few days, there have been uncertainties and concerns about the LUKS (“Linux Unified Key Setup”) disk encryption, which is widely used on Linux. We publish our assessment of this here. https://ift.tt/DNeRg40 May 5, 2023 at 10:49AM

Show HN: Pointless v1.5.0 – endless drawing canvas https://ift.tt/GXtKwQM

Show HN: Pointless v1.5.0 – endless drawing canvas https://ift.tt/xsOL8gh May 5, 2023 at 04:25AM

Show HN: Make domain verification as easy as verifying an email or phone number https://ift.tt/wA5BKfD

Show HN: Make domain verification as easy as verifying an email or phone number Hi HN, This is a project [1] I've been working on for a little while and I'm interested in your feedback and point of view. Many of us would have verified a domain name by pasting a string into a DNS TXT record. Some providers ask us to store this DNS TXT record at a domain using a DNS label like "_provider" e.g. _provider.yourdomain.com, and some providers ask that you do it at the zone apex (God help us [2]). The Domain Verification protocol stores a DNS TXT record at a DNS name derived from a hashed "verifiable identifier" (think email, telephone, DID), enabling anyone that can prove control over the verifiable identifier to prove authority for the domain name. For example, the domain verification record giving the email address user@example.com authority over the domain dvexample.com can be seen with this terminal command: dig 4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg._dv.dvexample.com TXT The record can specify what type of services the authorised party is allowed to use (e.g. SEO, Storage, Advertising) or specify an exact provider (ads.google.com), you can also specify an expiry date. The benefits of this approach are: - Domain owners can grant time-limited, granular permissions for third parties to verify a domain - Every service provider could use the same verification record - Once a domain owner creates a verification record by following instructions from one service provider, that same record could be used by other service providers - Domain registrars could set these records up on behalf of users, perhaps even upon domain registration (with registrant opt-in). This would provide domain registrants with a fast lane for signing up to services like Google Ads, Facebook Ads, Dropbox, whatever I'm still working on licensing but creating these records will always be free. I hope to find service providers that see significant upside in reducing friction for user onboarding that are willing to pay to license it. Worked example: Let's say you want to authenticate the user with the email user@example.com with the domain dvexample.com, these are the steps: 1. HASH(user@example.com) -> 4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg 2. Store Domain Verification record at: 4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg._dv.dvexample.com 3. TXT record determines permissions and time limit: @dv=1;d=Example user emali;e=2025-01-01;s=[seo;email];h=4i7ozur385y5nsqoo0mg0mxv6t9333s2rarxrtvlpag1gsk8pg BTW, if you're interested the syntax of that DNS record is a compact data serialisation format I created especially for DNS [3]. Thanks for taking a look, Elliott 1. https://ift.tt/AR7vhM5 2. dig target.com TXT 3. https://ift.tt/ckzIv0W (edit: formatting) https://ift.tt/AR7vhM5 May 5, 2023 at 07:40AM

Show HN: Text to Music – Create music and drum samples with AI https://ift.tt/bgEMOzx

Show HN: Text to Music – Create music and drum samples with AI https://ift.tt/cNb4D01 May 5, 2023 at 03:14AM

Show HN: Hypertune – Visual, functional, statically-typed configuration language https://ift.tt/O0BNXyZ

Show HN: Hypertune – Visual, functional, statically-typed configuration language Hey HN! I'm Miraan, the founder at Hypertune, and I'm excited to be posting this on HN. Hypertune lets you make your code configurable to let teammates like PMs and marketers quickly change feature flags, in-app copy, pricing plans, etc. It's like a CMS but instead of only letting you set static content, you can insert arbitrary logic from the UI, including A/B tests and ML "loops". I previously built a landing page optimization tool that let marketers define variants of their headline, CTA, cover image, etc, then used a genetic algorithm to find the best combination of them. They used my Chrome extension to define changes on DOM elements based on their unique CSS selector. But this broke when the underlying page changed and didn't work with sites that used CSS modules. Developers hated it. I took a step back. The problem I was trying to solve was making the page configurable by marketers in a way that developers liked. I decided to solve it from first principles and this led to Hypertune. Here's how it works. You define a strongly typed configuration schema in GraphQL, e.g. type Query { page(language: Language!, deviceType: DeviceType!): Page! } type Page { headline: String! imageUrl: String! showPromotion: Boolean! benefits: [String!]! } enum Language { English, French, Spanish } enum DeviceType { Desktop, Mobile, Tablet } Then marketers can configure these fields from the UI using our visual, functional, statically-typed language. The language UI is type-directed so we only show expression options that satisfy the required type of the hole in the logic tree. So for the "headline" field, you can insert a String expression or an If / Else expression that returns a String. If you insert the latter, more holes appear. This means marketers don't need to know any syntax and can't get into invalid states. They can use arguments you define in the schema like "language" and "deviceType", and drop A/B tests and contextual multi-armed bandits anywhere in their logic. We overlay live counts on the logic tree UI so they can see how often different branches are called. You get the config via our SDK which fetches your logic tree once on initialization (from our CDN) then evaluates it locally so you can get flags or content with different arguments (e.g. for different users) immediately with no network latency. So you can use the SDK on your backend without adding extra latency to every request, or on the frontend without blocking renders. The SDK includes a command line tool that auto-generates code for end-to-end type-safety based on your schema. You can also query your config via the GraphQL API. If you use the SDK, you can also embed a build-time snapshot of your logic tree in your app bundle. The SDK initializes from this instantly then fetches the latest logic from the server. So it'll still work in the unlikely event the CDN is down. And on the frontend, you can evaluate flags, content, A/B tests, personalization logic, etc, instantly on page load without any network latency, which makes it compatible with static Jamstack sites. I started building this for landing pages but realized it could be used for configuring feature flags, in-app content, translations, onboarding flows, permissions, rules, limits, magic numbers, pricing plans, backend services, cron jobs, etc, as it's all just "code configuration". This configuration is usually hardcoded, sprawled across json or yaml files, or in separate platforms for feature flags, content management, A/B testing, pricing plans, etc. So if a PM wants to A/B test new onboarding content, they need a developer to write glue code that stitches their A/B testing tool with their CMS for that specific test, then wait for a code deployment. And at that point, it may not be worth the effort. The general problem with having separate platforms is that all this configuration naturally overlaps. Feature flags and content management overlap with A/B testing and analytics. Pricing plans overlap with feature flags. Keeping them separate leads to inflexibility and duplication and requires hacky glue code, which defeats the purpose of configuration. I think the solution is a flexible, type-safe code configuration platform with a strongly typed schema, type-safe SDKs and APIs, and a visual, functional, statically-typed language with analytics, A/B testing and ML built in. I think this solves the problem with having separate platforms, but also results in a better solution for individual use cases and makes new use cases possible. For example, compared specifically to other feature flag platforms, you get auto-generated type-safe code to catch flag typos and errors at compile-time (instead of run-time), code completion and "find all references" in your IDE (no figuring out if a flag is in kebab-case or camelCase), type-safe enum flags you can exhaustively switch on, type-safe object and list flags, and a type-safe logic UI. You pass context arguments like userId, email, etc, in a type-safe way too with compiler errors if you miss or misspell one. To clean up a flag, you remove it from your query, re-run code generation and fix all the type errors to remove all references. The full programming language under the hood means there are no limits on your flag logic (you're not locked into basic disjunctive normal form). You can embed a build-time snapshot of your flag logic in your app bundle for guaranteed, instant initialization with no network latency (and keep this up to date with a commit webhook). And all your flags are versioned together in a single Git history for instant rollbacks to known good states (no figuring out what combination of flag changes caused an incident). There are other flexible configuration languages like Dhall (discussed here: https://ift.tt/FKJVI1C ), Jsonnet (discussed here: https://ift.tt/lhEvBqF ) and Cue (discussed here: https://ift.tt/sRdZ9vU ). But they lack a UI for nontechnical users, can't be updated at run-time and don't support analytics, A/B testing and ML. I was actually going to start with a basic language that had primitives (Boolean, Int, String), a Comparison expression and an If / Else. Then users could implement the logic for each field in the schema separately. But then I realized they might want to share logic for a group of fields at the object level, e.g. instead of repeating "if (deviceType == Mobile) { primitiveA } else { primitiveB }" for each primitive field separately, they could have the logic once at the Page level: "if (deviceType == Mobile) { pageObjectA } else { pageObjectB }". I also needed to represent field arguments like "deviceType" in the language. And I realized users may want to define other variables to reuse bits of logic, like a specific "benefit" which appears in different variations of the "benefits" list. So at this point, it made sense to build a full, functional language with Object expressions (that have a type defined in the schema) and Function, Variable and Application expressions (to implement the lambda calculus). Then all the configuration can be represented as a single Object with the root Query type from the schema, e.g. Query { page: f({ deviceType }) => switch (true) { case (deviceType == DeviceType.Mobile) => Page { headline: f({}) => "Headline A" imageUrl: f({}) => "Image A" showPromotion: f({}) => true benefits: f({}) => ["Ben", "efits", "A"] } default => Page { headline: f({}) => "Headline B" imageUrl: f({}) => "Image B" showPromotion: f({}) => false benefits: f({}) => ["Ben", "efits", "B"] } } } So each schema field is implemented by a Function that takes a single Object parameter (a dictionary of field argument name => value). I needed to evaluate this logic tree given a GraphQL query that looks like: query { page(deviceType: Mobile) { headline showPromotion } } So I built an interpreter that recursively selects the queried parts of the logic tree, evaluating the Functions for each query field with the given arguments. It ignores fields that aren't in the query so the logic tree can grow large without affecting query performance. The interpreter is used by the SDK, to evaluate logic locally, and on our CDN edge server that hosts the GraphQL API. The response for the example above would be: { "__typename": "Query", "page": { "__typename": "Page", "headline": "Headline A", "showPromotion": true } } Developers were concerned about using the SDK on the frontend as it could leak sensitive configuration logic, like lists of user IDs, to the browser. To solve this, I modified the interpreter to support "partial evaluation". This is where it takes a GraphQL query that only provides some of the required field arguments and then partially evaluates the logic tree as much as possible. Any logic which can't be evaluated is left intact. The SDK can leverage this at initialization time by passing already known arguments (e.g. the user ID) in its initialization query so that sensitive logic (like lists of user IDs) are evaluated (and eliminated) on the server. The rest of the logic is evaluated locally by the SDK when client code calls its methods with the remaining arguments. This also minimizes the payload size sent to the client and means less logic needs to be evaluated locally, which improves both page load and render performance. The interpreter also keeps a count of expression evaluations as well as events for A/B tests and ML loops, which are flushed back to Hypertune in the background to overlay live analytics on the logic tree UI. It's been a challenge to build a simple UI given there's a full functional language under the hood. For example, I needed to build a way for users to convert any expression into a variable in one click. Under the hood, to make expression X a variable, we wrap the parent of X in a Function that takes a single parameter, then wrap that Function in an Application that passes X as an argument. Then we replace X in the Function body with a reference to the parameter. So we go from: if (X) { Y } else { Z } to ((paramX) => if (paramX) { Y } else { Z } )(X) So a variable is just an Application argument that can be referenced in the called Function's body. And once we have a variable, we can reference it in more than one place in the Function body. To undo this, users can "drop" a variable in one click which replaces all its references with a copy of its value. Converting X into a variable gets more tricky if the parent of X is a Function itself which defines parameters referenced inside of X. In this case, when we make X a variable, we lift it outside of this Function. But then it doesn't have access to the Function's parameters anymore. So we automatically convert X into a Function itself which takes the parameters it needs. Then we call this new Function where we originally had X, passing in the original parameters. There are more interesting details about how we lift variables to higher scopes in one click but that's for another post. Thanks for reading this far! I'm glad I got to share Hypertune with you. I'm curious about what use case appeals to you the most. Is it type-safe feature flags, in-app content management, A/B testing static Jamstack sites, managing permissions, pricing plans or something else? Please let me know any thoughts or questions! https://ift.tt/LJy5fGA May 4, 2023 at 11:01AM

Show HN: Marqt.org lets you vote on the truth https://ift.tt/iujHN7m

Show HN: Marqt.org lets you vote on the truth I'm Arthur, and I wanted to share an MVP for Marqt.org, which lets you crowd-source the truth. John Stuart Mill said that "Truth emerges from the clash of ideas." In that spirit, Marqt brings two adversarial sides together to quantify truth and showcase the best arguments for each side. It is inspired by markets, where buyers and sellers discover a product's true price and update it dynamically. The ultimate aim is to build an open-source semantic knowledge base that represents the collective wisdom of humanity in real-time. If we can do this, I believe it can solve the problem of misinformation in the media and slow the virality of disinformation. More importantly, I believe can be a key part of the AGI stack and allow humans to be paid for building and maintaining it. So what is a marqt? A marqt is a short statement (120 chars or less) that can be true or false. You swipe right to "marq it" true or swipe left to "marq it" false (or use hotkeys j/k or t/f). Your "marq" counts toward a collective tally that determines how true or false any given marqt is (so something can be "68% true" or "93% false"). Unlike polls, marqts don't expire, so you can change your marq if new data or evidence comes to light or if you change your mind. After you "make your marq," you are encouraged to add a "remarq," or an explanation for your vote. Existing remarqs can be upvoted or downvoted based on how "remarqable" or "unremarqable" they are, a la Stack Overflow. You can also "make a marqt" by entering a statement into the marqt maker. You submit by marqing it true or false. It currently only accepts statements in the present tense ("current truths"), but "future truths" (predictions) will come down the line. Inside the marqt maker is a fine-tuned BERT model that roughly ensures the statement is sensical, grammatical, and not a question. "Show me the incentives and I will show you the outcome." -Charlie Munger The incentives in betting markets are to win money, but for every winner there is a loser on the other side, making it arguably a zero-sum game. The incentives in the marqt are to create engaging marqts that encourage the most participation through a point system called "marqs earned." The goal is eventually for people to be able to trade in their marqs earned for money (via a "marqtplace," of course). You earn one point for every marq you make, every remarq you add, every remarqable or unremarqable vote, and for every marqt you make. However, if you are the marqt maker, you collect all the points from the activity in your marqt – every marq, remarq, and remarqable/unremarqable vote. You also collect all the remarqable upvotes for your remarqs. Likewise, you lose points for unremarqable downvotes. You can view everything and interact with the UI and inference model in demo mode (without signing up), but I hope you sign up for an account. I intentionally am not using analytics or cookies because I'm not interested in secretly tracking what users do on the site, I'm interested in showcasing what they create. It's just an MVP for now. You may need to refresh the page every now and then, but please point out any bugs and feature requests. I specifically learned how to program a year and a half ago so that I could build Marqt.org because I believe it is important for society to accurately define truth in an age when information travels (and changes) faster than ever, and when LLMs so confidently lie and have been heavily prompted to avoid controversial topics. I have deep respect for the HN community, and I won't hide the fact that it's nerve-wracking to finally announce this because you're all so brilliant. I welcome your criticism and advice, and sincerely thank you for your time. Arthur arthur@marqt.org Front-end: JavaScript Back-end and API: Django/DRF ML: deberta-v3-xsmall via Hugging Face Deployed on: Google Cloud Run https://marqt.org May 4, 2023 at 08:38AM

Show HN: SubPage.app – Best way to create your business website's subpages https://ift.tt/Pdhsu6k

Show HN: SubPage.app – Best way to create your business website's subpages https://subpage.app May 4, 2023 at 09:02AM

Show HN: Jackrabbit Ops – AI Project Manager to Finish Projects https://ift.tt/0Eegu79

Show HN: Jackrabbit Ops – AI Project Manager to Finish Projects Jackrabbit Ops helps projects make money sooner by reaching their goals through aligning teams with video updates. Jackrabbbit Ops provides instantaneous feedback, just like an AI manager, to help you iterate faster. It summarizes your updates and provides highlights of the road box with clear visualization of your goal status. https://ift.tt/t53y0va May 4, 2023 at 04:45AM

Show HN: BundleStore – Increase sales by bundling your product with others https://ift.tt/SkQpIAu

Show HN: BundleStore – Increase sales by bundling your product with others Hi HN, BundleStore is a marketplace where users can bundle products for discounts. Bundling is a proven sales channel that works across all markets from MS Office to Big Mac Meals. Now you can make your product instantly more attractive by letting users bundle your product with other products. This is a great way for early stage companies to get first paying customers who wouldn't have paid otherwise. Please check the website out and let me know if you would like to offer bundles to increase sales. All you need to do is send me an email! hello@airballoon.app https://ift.tt/akwevyN May 4, 2023 at 04:13AM

Show HN: JediGPT, a GPT chatbot for star wars fans https://ift.tt/tQLgT4b

Show HN: JediGPT, a GPT chatbot for star wars fans https://jedigpt.ai/ May 4, 2023 at 08:05AM

Show HN: Skypulse – a dashboard to watch the Bluesky firehose https://ift.tt/XQYTR3C

Show HN: Skypulse – a dashboard to watch the Bluesky firehose https://ift.tt/tAC3DIS May 4, 2023 at 04:16AM

Show HN: GraphAr – A File Format for Archiving and Exchanging Graph Data https://ift.tt/IKeF7TN

Show HN: GraphAr – A File Format for Archiving and Exchanging Graph Data https://ift.tt/4SE8j9l May 4, 2023 at 02:13AM

Show HN: Designesy – Subscription-based design service for digital products https://ift.tt/MgRHpds

Show HN: Designesy – Subscription-based design service for digital products https://designesy.com May 3, 2023 at 03:16AM

Just in Time for Bike Month: The Active Communities Plan Interactive Map!

Just in Time for Bike Month: The Active Communities Plan Interactive Map!
By Christopher Kidd

Image of the new Active Communities Plan (ACP ) interactive map 

As part of our ongoing public outreach about the Active Communities Plan, the SFMTA has created a new ACP interactive map.  The release of the map comes just a couple of weeks after we began collecting feedback through our new survey.  

The map shows conditions for biking, scooting and rolling across San Francisco, as well as multiple layers of analysis conducted by the Active Communities Plan team. It is meant to help users understand how different factors like comfort, safety and network quality influence whether people decide to use active transportation or not.  

We want users to have the opportunity to explore and compare data, reflect on how it compares to their experiences with active transportation and provide input about what kinds of solutions work best. 

The interactive map has six main layers to explore: 

• Baseline Data – shows today’s active transportation network, our pipeline of approved projects and the location of every public bike rack in the city. 
• Collision Analysis – shows the locations of bike and scooter collisions on the High Injury Network before the pandemic (2017-2019) and since the start of the pandemic (2020-2021), as well as the neighborhoods with the most unreported (unlinked) bike & scooter collisions. 
• Comfort Analysis – shows the Bike Network Comfort Index (BCI), which categorizes perceived comfort or risk by people biking, scooting or rolling. This is only our first draft of the BCI – by taking our survey, you can help shape how the BCI is scored! 
• Micromobility Analysis – shows what streets people ride most when using BayWheels e-bikes or scooters, which BayWheels stations get the most ridership and the service areas for our micromobility providers. 
• Modeshare Analysis – shows data from the American Communities Survey: commute mode share by bicycle and the distribution of zero-car households. 
• Bike and Micromobility Activity Analysis – combines our BayWheels e-bike trip data, scooter trip data and modeled bike and scooter trip data from Replica to estimate the volume of trip activity. You can view activity across the city, on the active transportation network or by network facility type. 

Once you’ve had a chance to explore our interactive maps, take our survey. The results will help us understand your needs and barriers to active transportation, as well as how safe or comfortable people feel using different types of streets. From there we can develop network, program and policy recommendations that directly reflect the needs and priorities of people across the city. Our survey runs through July 31st.  

The Active Communities Plan public engagement effort has reached more than 1,000 residents since January, and we have events scheduled through mid-June with more to come throughout the summer. Visit Active Communities Plan (SFMTA.com/ActiveCommunities) for our schedule, which is updated regularly. If you want us to attend your community meeting or event, contact ActiveCommunities@sfmta.com and let us know! 

Published May 03, 2023 at 10:19AM
https://ift.tt/oXDzt0M

Show HN: Logss – BETA Release. A simple Rust tool to helps visualize logs https://ift.tt/oZS7IOA

Show HN: Logss – BETA Release. A simple Rust tool to helps visualize logs I've already show this in the past, but this time is a beta release with many new features. https://ift.tt/4vwMUGs May 3, 2023 at 07:40AM

Show HN: Public data research using ChatGPT https://ift.tt/bIi4H5R

Show HN: Public data research using ChatGPT After trying some queries, I found ChatGPT is good at finding public data, sometimes it may not be accurate, but overall, pretty good. Then why don't we make the data in a beautiful way ready to share? Columns + ChatGPT (alpha) is for data researchers! Looking forward to any feedback or suggestion... https://ift.tt/3n4z6iB May 3, 2023 at 01:48AM

Show HN: Praxis, an iOS browser that blocks all JavaScript and cookies https://ift.tt/HUdMbZu

Show HN: Praxis, an iOS browser that blocks all JavaScript and cookies https://ift.tt/vrFfWyw May 3, 2023 at 07:50AM

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Show HN: I made a word puzzle using word relatedness vectors https://ift.tt/2XVFUND

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Show HN: GPT crushes my high score in 2048.io https://ift.tt/expslAE

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Show HN: Hivemind – ChatGPT can now send you reminders and have async convos https://ift.tt/9pU3ibn

Show HN: Hivemind – ChatGPT can now send you reminders and have async convos Prompt -> notifications https://twitter.com/NickADobos/status/1653251763674419203 May 2, 2023 at 02:22AM

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Show HN: A to-do list that can do your to-do list (AI) https://ift.tt/TZHN0ov

Show HN: A to-do list that can do your to-do list (AI) https://ift.tt/jXHh0l6 May 1, 2023 at 06:12AM

Three Golden Rules to Improve Scooter Safety

Three Golden Rules to Improve Scooter Safety
By Mona Chiu

The SFMTA has some exciting news for all who use the sidewalk in the city! Starting May 1, 2023, we'll be launching a new safety campaign to promote safe and responsible electric scooter use for both permitted scooter share devices and privately operated scooters. The campaign will focus on three key safety rules that every rider should keep in mind while riding: no sidewalk riding, no speeding and no double riding (two people riding one device). By educating riders about the dangers of sidewalk riding, unsafe speeding and riding, and improper parking, we hope to make the city safer for everyone.    

Sidewalk riding has been a major concern for pedestrians in San Francisco, and it's illegal to ride an electric scooter on the sidewalk.   

 Electric scooters can travel at speeds of up to 15 miles per hour, which can be dangerous if riders aren't paying attention to their surroundings. The SFMTA's safety campaign will encourage riders to be mindful of their speed (riding over 15 miles per hour is illegal) and to obey traffic laws. 

The campaign will also focus on emphasizing double riding is illegal. By law, only one rider should ride a scooter at a time.  

To spread the word about this safety campaign, we will be placing posters on Muni buses, displaying ads in Muni bus stops and running ads on social media. This should help us reach as many scooter riders as possible and encourage them to prioritize safety while riding. 

The SFMTA already has been actively working to improve scooter safety in San Francisco. We have implemented several policies and regulations, including: 

• Requiring permitted scooter companies to provide a lock-to system to keep parked scooters out of the accessible path of travel  
• Requiring permitted scooter companies to develop and implement a plan for safe riding. These plans include rider training, in-app messages with safety messages and sidewalk detection technology on their devices.  
• Encouraging scooter permittees to adopt an escalating penalty structure for improper riding and parking 
• Working with the Port of San Francisco to reduce sidewalk riding on the Embarcadero.  

The agency has also worked to improve infrastructure for scooter riders. We have installed: 

• 3,000+ racks installed since the beginning of scooter permit program in 2018 
• 11,000+ bike racks available citywide for scooter parking  
• 465 miles of bikeways in San Francisco 
• 78 miles off-street paths 
• 139 miles of bike lanes (Class II) 
• 43 miles of separated bikeways (Class IV)  
• 45 miles of bike lanes and separated bikeways added since 2018 
• 33 miles of Slow Streets 

The agency is also working to expand the active transportation network in the city through our new Active Communities Plan. 

If you want to report any complaints related to scooter riding, you can call 311 or visit the 311 website.  

To learn more about what the SFMTA is doing to promote a safe and useful scooter share system, visit our scooter share permit project page and view our data dashboards. 

Published May 01, 2023 at 12:32PM
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Show HN: Modify and repack firmware from your browser with OFRAK https://ift.tt/Oi5wyC8

Show HN: Modify and repack firmware from your browser with OFRAK https://ift.tt/1avxInb May 1, 2023 at 02:09AM

Show HN: Hacked a RPG engine into an AI chatbot https://ift.tt/9seRz5X

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Show HN: Lectureapp.io – Online Markdown-to-anything* editor https://ift.tt/M8CE3Fs

Show HN: Lectureapp.io – Online Markdown-to-anything* editor Here's my weekend project that I think you'll find interesting. Markdown was (and still is) my secret weapon to keep myself productive and sane throughout my teaching career, and that's because I created and maintained number of internal tools to convert such text documents to presentation decks, blog articles, and even pop quizzes. I finally found the time to duct tape these tools together and launch as a product that you can take advantage of as well. I am calling it LectureApp.io, and I would describe it as an "online text-to-anything* editor." Please feel free to give it a try and leave a review on ProductHunt. I welcome any feature suggestions as this will be my main driver for future teaching appointments. https://lectureapp.io/ May 1, 2023 at 02:36AM

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Muni Metro Fix-It Week Maintains the Subway Infrastructure

Muni Metro Fix-It Week Maintains the Subway Infrastructure
By Jessie Liang

Track crew removing old rail at the Van Ness crossover 

The first Muni Metro Fix-It Week of 2023 was a resounding success in March, and it’s also the first Fix-It Week since the SFMTA launched the Central Subway in early January of this year. Here is a behind-the-scenes video recap. Fix-It Week is the SFMTA’s quarterly effort to optimize work time by closing Muni Metro early for critical maintenance. The SFMTA’s Maintenance of Way (MOW) teams did an excellent job maintaining the subway and preventing future breakdowns. 

Fix-It Week helps the Muni Metro get a 20% improvement in speed and about a 20% improvement in reliability in the subway. It takes fewer minutes to take the N Judah from the Outer Sunset to Embarcadero now than it did in 2019. 

 From March 16 to March 22, 2023, the Muni Metro Subway between Embarcadero and West Portal closed at 9:30 p.m. to provide SFMTA maintenance crews an extended window to perform underground infrastructure improvement work that cannot be completed during the usual overnight windows. During the subway closure, buses provided substitute service for Muni Metro lines on the surface and connected all stops on Market Street.   

Track crew powerwashing station walls

The goal of Fix-It Week is to make Muni metro subway operations more reliable, ensure safety, and improve the customer experience. Nine MOW teams, Track, Cable Car, Motive Power, Maintenance Engineering, Mechanical Systems, Overhead Lines, Underground, Paint Shop and Signal, were involved in the maintenance work. 

Major maintenance work includes: 

• Track replacement and reinstallation from the Ferry Portal to the Van Ness Crossover 
• Mechanical systems cleaning, maintenance and installation  
• Signal repairs and upgrades, including the demolition of old train control system racks, equipment and wiring 
•  Track fastener and subway lighting surveys, and drain cleaning around switches  
• Overhead Line inspections and Overhead Section Break hardware adjustments 
• Debris removal and traction power substation inspections 
• Cable Car maintenance and repairs 

Custodial staff cleaning Church Station

The SFMTA teams completed over 2,000 hours of maintenance and inspections over the seven night shutdown. They were able to perform 161 feeder operations, replace more than 125 bulbs for trackway lighting in multiple locations, renew 750 feet of Overhead Contact System contact wire, replace eight blue light phones and inspect approximately 8,000 track fastener plates from the Ferry Portal to Powell Station. 

Track crew powerwashing and removing trash from trackway 

A support team was also contributed to the success of Fix-It Week. These staffers helped coordinate maintenance work, upheld all safety standards and ensured that subway service resumed on time every day. 

The SFMTA will continue to keep the Muni Metro system in a state of good repair. The next Fix-It Week is scheduled for July 2023, and we thank you for your patience and understanding while we do this vital work.  

For more information, visit Muni Metro Maintenance Project (SFMTA.com/SubwayMaintenance).  

Track crew moving new rail into position by hand at the Van Ness Crossover 

Published April 28, 2023 at 02:17PM
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