Profit Builders

What it does

Real-time institutional options flow, classified through a 9-filter engine we publish in full: CBOE Rule 6.11 sweep detection, OPRA condition codes, NBBO-based aggression, Black-Scholes-Merton Greeks. No opaque score, see exactly why a signal qualified before you trade it. Built on the live Databento OPRA tape across 234 symbols, plus a GEX heatmap for dealer positioning across 195. Free 14-essay library included if you want to learn to read flow yourself.

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  OpenTrade20d ago · github.com · ▲162

  Open-source trading harness for Claude Code / Codex.

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  MobiusMay 2026 · ▲93

  Describe a trade and Mobius builds, backtests, and runs it

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  Floww Beta2025 · ▲80

  Crypto investing on autopilot

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  Edgewall2022 · ▲76

  Real-time trading alerts and research platform

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  rule30: Would we back your startup + whyDec 2025 · ▲46

  Share your LinkedIn. Receive a decision + reasoning in 24h.

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  Trade Grid3d ago · tradegridnews.com · ▲2

  Live options bias signals for Indian bank stocks

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  PaymentKit▲466

  Billing that survives a processor shutdown

  Commerce · 13d ago · paymentkit.com

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  Equitybee Benchmark▲241

  Compare your startup equity grant for free.

  Commerce · 26d ago · equitybee.com

• 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

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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 · 16d ago · simedw.com