The best Hacker News stories from Show from the past day
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Show HN: Ekselio – Loveable for finance workflows (local first)
Hi everyone, I am KD - Back in my college days, I dabbled with coding, learned the basics, HTML, CSS etc. but somehow I ended up in Finance which consumed the next 20 years. Then, during covid I picked up coding again, learned react, typescript, etc - even built a rudimentary site - and then came the chatgpt moment, followed by Claude etc.<p>So, as a side project, considering that I had spent 20 years in finance and M&A I started building Ekselio, loveable for finance workflows.<p>Differently from other vibe coding tools, this is local first - meaning the workflows are orchestrated by the LLM based on the file schema but then the execution happens in the browser - the cool thing is that you can see the canvas, the previews of each node, and the code base (SQl) - see the Canvas tab.<p>That said I did include a home tab, which is more of a visual, mainly because people think it's easier to relate to how folks operate, although I know finance and accounting folks usually like the workflow and full transparency - the other thing is that once you create a workflow you can save it and then next month,you can just click Run and it runs it again with no LLM tokes involved - so the infrastructure is minimal.<p>Everything can be exported in an excel data pack with M code in case someone would want to reproduce - think Audit ready. And, I also connected to quickbooks on line so someone can directly pull in and manipulate their financials live - I also connected to Fred which carries literally 800k series in terms of macro economic data - i.e. oil prices, inflation, CPI etc and finally to stocks.<p>I am hoping people find holes in the architecture or any ideas to make this flow a little bit better. It is in progress so if you run into bugs let me know. Considering that I am using my own API key, I have put a wall in case people overuse it but DM me if you would like to continue using, I can turn off the wall for you - hoping to keep that to a small number of users if I can and will do my best. Thank you again, appreciate you taking the time.
Show HN: A CC0 museum of retro 3D tricks you can paste into a page
Show HN: Building a Markdown editor for Mac, iOS and web
I've spent the last 10 months building Beauty: a local, powerful greco-roman Markdown editor where the page looks finished while you type. It runs on the Mac, iPhone and in the browser, and the browser version opens without an account: <a href="https://app.markdown.beauty" rel="nofollow">https://app.markdown.beauty</a><p>I was frustrated with writing apps, and like most I used Apple Notes. After 2+ years immersed in Cursor, Codex and CC, I wished some interactions existed in a text editor.<p>The Markdown renders in place as you write it, including tables (which you can drag and resize without lining up pipes), KaTeX math and Mermaid diagrams. A lot of thought went into typography and the writing experience.<p>Your notes on the Mac are plain .md files in a folder with images next to them, so they open in anything else too. Each note keeps 200 versions. If you share a note with a link it syncs peer to peer over WebRTC while someone has it open, and the server that connects you only ever sees a random room id.<p>Most of the ~1,000 commits went into the editor itself. It's a contenteditable, and I don't let the browser restructure the document at all, which was a lot more work than I expected. Building this to be performant and cross-platform required some novel approaches, which I'll later open source. The editor is free with no account or ads, and there's an optional subscription for sync through your own iCloud.<p><a href="https://www.markdown.beauty" rel="nofollow">https://www.markdown.beauty</a>
Show HN: TinyAIArena watch AI agents battle it out
Did you ever click on an “AI Arena” expecting glorious battle and instead get a boring benchmark? If so, this project is for you: proper life-or-death fights between four models on a picturesque 8×8 grid. May the most intelligent one win!<p>Click on any of the matches to spectate them.<p>Code: <a href="https://github.com/hp6/ai-arena" rel="nofollow">https://github.com/hp6/ai-arena</a>
Show HN: Lofi Cities – Pixel-art city nights with browser-generated lofi
Show HN: Agentic CUDA Kernel Optimizer
Hello; I was working on optimizing some CUDA kernels and I thought may be it is a good oppurtunity learn langgraph as well. I created a simple C++ CUDA Test Harness and handed that to AI agents. They can run kernels, get benchmarks, and even can profile via nsight
Show HN: Hacker Atlas - A map of what Hacker News talks about
I built a tool to explore HN topics and how they change over time.<p>Currently covers 2024 to today. Is it useful? What's missing?
Show HN: Hacker Atlas - A map of what Hacker News talks about
I built a tool to explore HN topics and how they change over time.<p>Currently covers 2024 to today. Is it useful? What's missing?
Show HN: A Claude Code skill to analyze your chess games
Hello HN,<p>It started as an experiment: can Claude play chess properly if it uses vision instead of PGN notation? Somehow it can.<p>The next experiment was to see whether Claude + Stockfish could explain a game. Somehow it can too.<p>A few sessions later, I had a system that takes my live audio notes (or text, for that matter) and a vague instruction like "analyze my last lichess game", and gives me a commented video of the game. The result is not perfect and it takes time to deliver (an hour or so), but for me it is a much more pleasant and memorable experience than clicking around Stockfish branches. It burns tokens, so make sure you have enough quota. From the session logs, the last analyzed game would have cost around $15 at API prices.<p>The fact that it reflects on my own thinking during the game makes it interesting from a teaching point of view, so I thought it was worth sharing.
Show HN: A Claude Code skill to analyze your chess games
Hello HN,<p>It started as an experiment: can Claude play chess properly if it uses vision instead of PGN notation? Somehow it can.<p>The next experiment was to see whether Claude + Stockfish could explain a game. Somehow it can too.<p>A few sessions later, I had a system that takes my live audio notes (or text, for that matter) and a vague instruction like "analyze my last lichess game", and gives me a commented video of the game. The result is not perfect and it takes time to deliver (an hour or so), but for me it is a much more pleasant and memorable experience than clicking around Stockfish branches. It burns tokens, so make sure you have enough quota. From the session logs, the last analyzed game would have cost around $15 at API prices.<p>The fact that it reflects on my own thinking during the game makes it interesting from a teaching point of view, so I thought it was worth sharing.
Show HN: Reladraw – A diagram language where you decide where to place things
I love making diagrams to help understand, plan, etc. However, the options are (A) auto-placement languages like Mermaid or Graphviz (which don't let me decide how the diagram looks), or (B) software like Draw.io which are powerful but are very time consuming (and inefficient for agents to manipulate).<p>I wanted to have the benefits of both, where you can define a diagram in a diagram language, but also retain a high degree of control over what the diagram looks like.<p>I also wanted this to work well for humans and agents.<p>On the Github link, there's a playground where you can try it out without installation. There's also instructions for a simple npm install and for installing a skill you can use with Claude or other agents.
Show HN: Reladraw – A diagram language where you decide where to place things
I love making diagrams to help understand, plan, etc. However, the options are (A) auto-placement languages like Mermaid or Graphviz (which don't let me decide how the diagram looks), or (B) software like Draw.io which are powerful but are very time consuming (and inefficient for agents to manipulate).<p>I wanted to have the benefits of both, where you can define a diagram in a diagram language, but also retain a high degree of control over what the diagram looks like.<p>I also wanted this to work well for humans and agents.<p>On the Github link, there's a playground where you can try it out without installation. There's also instructions for a simple npm install and for installing a skill you can use with Claude or other agents.
Show HN: Most Hated Tools
Show HN: AgentRun: DSL to turn agents into workflows
Hi HN,<p>I just open sourced the DSL that our harness in grep.ai uses to turn repeatable parts of agent work into workflows. You can combine tool calls, code, Jev-powered system one decisions for things like routing and screening evidence, and agents when a step needs more investigation.<p>Our harness uses the traces and retro notes agents leave behind when doing a job to figure out which parts can become a workflow. The idea is to make the work easier to understand and avoid paying for a full agent loop where one isn’t needed.
For example, a research workflow can split a question into subquestions, send agents to research them in parallel, use Jev to screen the evidence, and have another agent write the report. You can inspect the steps, evaluate the evidence screening separately, or change one agent without rebuilding everything.<p>The DSL and examples are in our GitHub. There’s a scripted demo you can run without API keys: <a href="https://github.com/Parcha-ai/agentrun" rel="nofollow">https://github.com/Parcha-ai/agentrun</a><p>You can also use it as a Pi extension to build, inspect, and run workflows: <a href="https://github.com/Parcha-ai/agentrun#use-it-in-pi" rel="nofollow">https://github.com/Parcha-ai/agentrun#use-it-in-pi</a><p>I would love to hear if this is useful to others.<p>More background on how AgentRun works in this video: <a href="https://www.youtube.com/watch?v=vOVhtGjtwpg" rel="nofollow">https://www.youtube.com/watch?v=vOVhtGjtwpg</a>. Or read about our use cases in this article: <a href="https://x.com/MiguelriosEN/status/2101029313906987422" rel="nofollow">https://x.com/MiguelriosEN/status/2101029313906987422</a>.
Show HN: Make math automatic with Mathy
<a href="https://mathy.game/" rel="nofollow">https://mathy.game/</a><p><a href="https://mathy.game/app" rel="nofollow">https://mathy.game/app</a><p><a href="https://apps.apple.com/us/app/mathy-build-math-automaticity/id6804888736">https://apps.apple.com/us/app/mathy-build-math-automaticity/...</a>
Show HN: Make math automatic with Mathy
<a href="https://mathy.game/" rel="nofollow">https://mathy.game/</a><p><a href="https://mathy.game/app" rel="nofollow">https://mathy.game/app</a><p><a href="https://apps.apple.com/us/app/mathy-build-math-automaticity/id6804888736">https://apps.apple.com/us/app/mathy-build-math-automaticity/...</a>
Show HN: Doom or Bloom, map your AI worldview
Map your AI worldview by answering a few questions, and see how you compare with others.<p>only takes a few minutes && free & open source && private by default && powered by Jev<p>I think this is a really important question for everyone to be asking themselves, and my hope is that this lil project helps to move our conversations around AI futures in a more balanced, productive direction.
Show HN: Doom or Bloom, map your AI worldview
Map your AI worldview by answering a few questions, and see how you compare with others.<p>only takes a few minutes && free & open source && private by default && powered by Jev<p>I think this is a really important question for everyone to be asking themselves, and my hope is that this lil project helps to move our conversations around AI futures in a more balanced, productive direction.
Show HN: Air-gapped file encryption as self-decrypting HTML page
Air-gapped file encryption packed into a single, self-decrypting HTML page. Repo: <a href="https://github.com/ApelegHQ/ts-cms-ep-sfx" rel="nofollow">https://github.com/ApelegHQ/ts-cms-ep-sfx</a><p>I was inspired by self-extracting archives. I wanted to share files with basically no dependencies. The goal was:<p><pre><code> 1. Something that didn't require any installation (assuming a web browser)
2. Have a single file with no network that could self-decrypt
3. Be fully auditable
</code></pre>
The second point is done by having (sort of(*)) reproducible builds and embedded OpenPGP signatures.<p>The first point is made by cleverly manipulating the HTML structure so that it can decrypt without breaking the PGP signature. It can even decrypt using bare openssl (which was a design goal too, though getting the exact structure right took some work and bug reports).<p>The third point is accomplished by the first two, and by the source being freely available.<p>(*) Depends on the OS at the moment.
Show HN: Air-gapped file encryption as self-decrypting HTML page
Air-gapped file encryption packed into a single, self-decrypting HTML page. Repo: <a href="https://github.com/ApelegHQ/ts-cms-ep-sfx" rel="nofollow">https://github.com/ApelegHQ/ts-cms-ep-sfx</a><p>I was inspired by self-extracting archives. I wanted to share files with basically no dependencies. The goal was:<p><pre><code> 1. Something that didn't require any installation (assuming a web browser)
2. Have a single file with no network that could self-decrypt
3. Be fully auditable
</code></pre>
The second point is done by having (sort of(*)) reproducible builds and embedded OpenPGP signatures.<p>The first point is made by cleverly manipulating the HTML structure so that it can decrypt without breaking the PGP signature. It can even decrypt using bare openssl (which was a design goal too, though getting the exact structure right took some work and bug reports).<p>The third point is accomplished by the first two, and by the source being freely available.<p>(*) Depends on the OS at the moment.