Scribble

What it does

A robot with a real pen writes your cards. We hand-address the envelope, stamp it and post it. Set a rule once and every birthday, work anniversary or renewal date gets a card without anyone remembering. Or upload a list and send 3,000 in an afternoon. Real estate farming, client thank-yous, HR milestones, cold prospects. Connects to HubSpot, Salesforce, Shopify and Zapier, and there's an MCP server so you can ask Claude or ChatGPT to post one. No subscription, just top up credits.

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  Handwrite2019 · ▲120

  The easiest way to send authentic handwritten cards.

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  postedby.ai2022 · ▲122

  AI generated postcards, delivered globally

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  Cardybot2020 · ▲92

  A Slackbot that sends signed birthday cards for remote teams

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  Contactually Printed Cards2016 · ▲98

  A CRM can now send handwritten cards to your relationships!

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  Gift Note Writer2024 · ▲108

  AI powered tool to generate personalized gift notes

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  Greetsapp2023 · ▲200

  AI powered greeting cards for the holidays & beyond

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  AstraPixels▲267

  ​​A pixel-art solar system at its real current positions.​

  Growth · 29d ago · astrapixels.com

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  WorldMap.lol▲197

  Put your startup on the map. Literally.

  Growth · 13d ago · worldmap.lol

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 10d ago · louisabraham.github.io

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  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026 · adant.ai

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 17d ago · simedw.com