🚀 From Zero to Hero: Dodging the Dark Side of Trading System Bugs (A Jedi’s Guide)
The Quest Begins (The "Why") Picture this: I’m hunched over three monitors at 2 a.m., coffee gone cold, staring at a chart that looks like a glitchy 8…
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The Fee Assumption Quietly Wrong in Most Backtests
If you've written a crypto backtester, there's a decent chance one line in it is quietly wrong. It's not the slippage model, not the funding rate, not…
Coinbase’s new tool can help agents trade and pay for premium research
Coinbase's agent can use x402 protocol to get access to data and APIs.
Coinbase debuts AI agent that can trade and pay for premium research
Coinbase's agent can use x402 protocol to get access to data and APIs.
What Is Drawdown? Why It Matters More Than Your Win Rate
What Is Drawdown? Why It Matters More Than Your Win Rate Every year, DALBAR — a US-based financial research firm — publishes a study on how ordinary i…
Build a Real-Time Stock Signal Scanner in Python (No Bloomberg Terminal Required)
Most retail traders look at one indicator at a time. Professional quant desks look for confluence - multiple signals firing on the same ticker at the …
We Transpiled PineScript v6 to C++ So Backtests Are Actually Reproducible
We Transpiled PineScript v6 to C++ So Backtests Are Actually Reproducible TradingView's PineScript is the most widely used language for writing tradin…
We automated the easy half of trading and called it a trader
Here's the part everyone keeps skipping. The AI-agent trading boom is not a scam, and it is not vaporware. There are agents in production right now si…
I Measured Polymarket's API Latency From 5 Regions — Here's the Script and the Results
TL;DR — I benchmarked round-trip latency to Polymarket's CLOB order API ( clob.polymarket.com ) from five VPS regions. Amsterdam: ~1.2 ms . US-East: ~…
What it takes to run a Polymarket Up/Down arbitrage bot in production
A "risk-free" arbitrage on Polymarket's crypto Up/Down markets is easy to describe and hard to actually run. The edge — the cross-cycle sandwich — is …
Fix Polymarket order_version_mismatch and not-enough-balance (2026-04 SDK upgrade)
If your Polymarket Up/Down bot started throwing order_version_mismatch or not enough balance / allowance (with funds in your wallet) in late April 202…
Polymarket's price WebSocket can stall while connected (and the docs won't warn you)
Polymarket streams live crypto prices over its Real-Time Data Socket (RTDS) at wss://ws-live-data.polymarket.com . If you're building a bot on it, two…
Why I Stopped Ignoring Position Size (and What It Taught Me About Stops)
Why I Stopped Ignoring Position Size (and What It Taught Me About Stops) Quick context (why you're writing this) Here's the thing: I spent a whole wee…
I Built a Side Project Selling Pine Script Strategies for Prop Traders
Started propfirmpinescripts.com a while back selling pine script strategies for futures prop firm traders. Figured I would share some of what worked a…
The Day Our Bot Ran Out of Money
The Setup Here's the thing about building a trading bot from scratch: you spend so much time making it work that you forget to think about what happen…
StockMolt Update — Week of May 20, 2026
{ "title" : "StockMolt: The Open Arena Where Your AI Agent Trades Takes Real Heat (Week of May 20, 2026)" , "body" : "# StockMolt: The Open Arena Wher…
Stop Staring at Spreadsheets: How a Proper Portfolio Visualizer Kept Me From Panic-Selling
In March 2020, I sold positions I should have held for years. The market was collapsing. My broker app was a wall of red. My spreadsheet, half-updated…
Building an AI-Powered Quantitative Trading System with Hermes Agent and IBKR
Building an AI-Powered Quantitative Trading System with Hermes Agent and IBKR How I set up a multi-signal ETF trading bot that runs on autopilot — and…
Trading fee calculator that shows costs in R (units of risk)
Most trading fee calculators show you two numbers: the dollar amount and the percentage of notional. Both are correct. Neither is useful. Here's the p…