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Viral Post Offers Claude Code Prompt for Regime-Detection Trading Bot

Viral Post Offers Claude Code Prompt for Regime-Detection Trading Bot

The post shares a prompt for Claude Code that builds a trading bot using a Hidden Markov Model to detect market regimes, with per-regime strategies, walk-forward testing and a Sharpe 1.5 threshold. It attributes the prompt to a leaked Jane Street quant document, and the post's claims about its origin are unverified.

Original post · 1 min read
A Jane Street quant got fired for leaking this internally, then posted it anyway

paste into Claude Code tonight. This one prompt builds a regime-detection trading bot:

fits a Hidden Markov Model to read calm, choppy, stressed and crash states

writes a separate playbook per state, never mixes strategies

switches only after a new state holds the lead for several candles, so it never flip-flops on noise

walks forward through real data with real costs, and refuses to ship unless it clears Sharpe 1.5 and beats buy-and-hold

ends every run with one line in caps: what could blow up this account

bookmark it
Roan @RohOnChain
Jev is the FASTEST AI model ever built for trading

It makes calibrated buy/sell decisions in under 100 ms

That is one real decision on every single block, 24/7

In this article I've shown EXACTLY how to build HFT trading system with Jev (from scratch)
♥ 1.7K · ⟲ 152 · 👁 295.3KView on X ↗

More in Agents & Dev Tools

ArtCraft Releases Seven Open-Source Creative Apps as Adobe Alternatives

Interfaz de herramientas creativas para edición de imágenes, ilustración, video y desarrollo de bibliotecas.

Miguel Ángel Durán shares getartcraft.com, which offers seven free, open-source creative tools built in Rust covering image editing, vector illustration, video, photography, PDFs, motion graphics and page layout. The apps are presented as reimplementations of Adobe products.

Original post · 1 min read
Todos los productos de Adobe reimplementados desde cero, gratuitos y de código abierto

→ getartcraft.com/apps
getartcraft.comCrafting Apps: open-source creative toolsImage editing, vector illustration, video, photography, PDFs, motion graphics and page layout: seven native, open-source apps from the ArtCraft team, built in R
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Developer Builds Cringe Bot to Automate QA and Open Pull Requests

Developer Builds Cringe Bot to Automate QA and Open Pull Requests

Zach Davis describes Cringe Bot, a Grok-based agent that runs three times a week to find UI issues on his websites and apps, with findings passed to DevinAI for automated pull requests. It is a practical workflow for AI-driven QA.

Original post · 1 min read
Cringe Bot is a team Grok Bot I created to find small problems with the stuff we build that makes our eyes twitch a little. It runs automatically 3x a week, does its own QA, and drops up to 5 findings per run with threaded screenshots.

It runs against our "marketing" website (cxo.dev), the custom app we built for our course, and a few other things. I take a quick look at the findings and have @DevinAI investigate and put up PRs for most of them.
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Anthropic Adds Computer Use and Browser Tools to Claude SDKs

Anthropic Adds Computer Use and Browser Tools to Claude SDKs▶

ClaudeDevs announced that computer use and browser use toolsets are now built into the Python and TypeScript SDKs for Claude. The SDKs now run the action loop and dispatch clicks and keystrokes to drivers, replacing the custom loop developers previously wrote.

Original post · 1 min read
Computer use and browser use toolsets are now built into the Python and TypeScript SDKs for Claude.

The API tells you what Claude wants to click or type.

Previously, you had to write your own loop and map clicks and keystrokes to commands, but the SDKs now run the loop and send actions to drivers.
♥ 5.0K · ⟲ 265 · 👁 371.8KView on X ↗

Rawmakase Brings Lightroom-Compatible RAW Editing to Linux

Rawmakase Brings Lightroom-Compatible RAW Editing to Linux

DHH shares rawmakase, a free and fast RAW photo editor for Linux, macOS and Windows that works with Lightroom-compatible camera profiles and presets. He says his family photos came out well when edited with it.

Original post · 1 min read
My grail for Linux is finally here: A Lightroom alternative that takes all my classic camera profiles and presets. Just edited two family photos, and they came out perfect. FREEDOM AT LAST!! github.com/pch/rawmakase
github.comGitHub - pch/rawmakase: 📸 Free, fast, Lightroom-compatible RAW photo editor for Linux, macOS, and Windows.📸 Free, fast, Lightroom-compatible RAW photo editor for Linux, macOS, and Windows. - pch/rawmakase
♥ 3.6K · ⟲ 156 · 👁 116.2KView on X ↗

Founder Replaces Accountant With Claude to Handle QuickBooks

Danielle Morrill says she fired her accountant and gave Claude several years of monthly closes and annual financial statements to work with in QuickBooks. She says she is considering open-sourcing the workflow.

Original post · 1 min read
I fired our accountant (they’re great but I’m solo now) and unleashed Claude on QuickBooks with several years of monthly closes and annual financial statements in hand

I think I need to open source this
♥ 97 · ⟲ 3 · 👁 8.6KView on X ↗

Developer Builds Open-Source Native Plex Client for LG TV With Claude

Developer Builds Open-Source Native Plex Client for LG TV With Claude

Vaibhav Sisinty describes a Reddit user who reverse-engineered an LG TV because the Plex app was slow, then built a native open-source Plex client using Claude Code, Opus and Fable. The client, written in C and Rust with a custom OpenGL UI, cut profile loading from 30 seconds to 3 and supports 4K, Dolby Vision and Atmos.

Original post · 1 min read
Someone on Reddit reverse-engineered their LG TV because the Plex app took 30 seconds to load

Built an entire native Plex client from scratch using Claude Code, Opus, and Fable.

Started in C, moved to Rust, ended up building his own OpenGL UI framework along the way

Same TV. Same hardware. Profile picker now loads in 3 seconds instead of 30. Runs at 60 fps. Supports 4K, Dolby Vision, Atmos. Fully open source

One person. One TV he was annoyed with. AI tools doing the work of an entire engineering team firmware reverse engineering, media playback, GPU profiling, shader optimization, UI architecture, all of it
♥ 4.2K · ⟲ 263 · 👁 144.5KView on X ↗
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