📰 Dev.to · manja316
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Dev.to · manja316
1d ago
When Polymarket says 70%, does it happen 70% of the time? I checked against 19.4M price snapshots.
If you trade, model, or just read prediction markets, there's one question that decides whether the...
Dev.to · manja316
6d ago
How to backtest a Polymarket strategy with free 15-minute historical data
A reproducible recipe: load 18M+ Polymarket price snapshots, label resolved markets, and backtest a favorite-longshot strategy in ~40 lines of pandas. With the
Dev.to · manja316
1w ago
I archived 17.9M Polymarket price snapshots. Three things the data shows that the order book hides.
A walk through what ~17,900 prediction markets look like in bulk — favorite-longshot bias, late convergence, and why volume != movement — using a dataset of 17.
Dev.to · manja316
3w ago
Building a free Polymarket screener: how I turned 13,963 markets into a single scannable page
Polymarket has thousands of markets. Their UI is built for depth on a single market — bet slip,...
Dev.to · manja316
4w ago
I built an airdrop scanner that tells crypto farmers how much they've already lost. Most see a number they don't like.
Free, single-file, no signup. Pattern-aware scoring + Sybil clustering detection + brutal gas-cost honesty. Why every airdrop tool needs a reality check.
Dev.to · manja316
1mo ago
Every Indian GST invoice generator forces signup. I built one that doesn't.
I needed to send one GST invoice last week. Took me 25 minutes. Vyapar wanted me to sign up. Zoho...
Dev.to · manja316
1mo ago
Week 1 of pnl-truthteller: 22 pypi downloads, 0 stars, and one real bug report
A week ago I shipped pnl-truthteller — a one-command auditor that reads a Polymarket wallet's...
Dev.to · manja316
1mo ago
308 Labeled Polymarket Crash Trades — Free Dataset For Mean-Reversion Research
Released a labeled Polymarket crash-recovery dataset: 308 trades from a live bot, 80.2% profitable, 19 columns, real outcomes. Includes a Python loader and a ba
Dev.to · manja316
1mo ago
Sigil — An MCP-Native Technical Analysis Runtime That Talks to Claude
I needed indicators that could query Claude/Cursor without a glue layer. Built Sigil: 8 core indicators + 2 composite signals + the unique Polymarket Sentiment
Dev.to · manja316
2mo ago
I Analyzed 8,050 Polymarket Markets — Here's What Crashes and Recovers
I built a system that tracks every Polymarket market, records price snapshots every few hours, and...
Dev.to · manja316
2mo ago
I Analyzed 7,500 Polymarket Markets — Here Is What Crashes and What Recovers
I have a database with 6.5 million price snapshots across 7,907 Polymarket markets. I built a feature...
Dev.to · manja316
2mo ago
I Gave 12 AI Agents a $200 Budget and Told Them to Make Money — Day 30 Results
30 days ago, I set up 12 autonomous AI agents with one goal: generate $500/month in revenue. Each...
Dev.to · manja316
2mo ago
3 Ways I Find Polymarket Trading Edges Using Free Analytics (With Real Examples)
Most Polymarket traders watch one market at a time. They pick a topic they follow, buy yes or no, and...
Dev.to · manja316
2mo ago
I Built a Scanner That Finds Mispriced Prediction Market Contracts — Here's How It Works
Prediction markets are supposed to be efficient. Prices should reflect true probabilities. But with...
Dev.to · manja316
2mo ago
My Polymarket Crash Trading Bot Just Hit 85% Win Rate After 120 Trades — Here Are the Raw Numbers
I built an automated crash detector for Polymarket prediction markets. After 120 closed trades, it's...
Dev.to · manja316
2mo ago
The Data Pipeline Behind 6.3M Polymarket Prices: SQLite, Python, and 4-Minute Updates
I collect every price movement across 7,500+ Polymarket prediction markets. Every 4 minutes. That's...
Dev.to · manja316
2mo ago
I Built 24 Claude Code Skills and Open-Sourced My Best Ones — Here's the Architecture That Makes Them Work
I've been building Claude Code skills full-time for the past month. 24 skills total. Some are trivial...
Dev.to · manja316
2mo ago
I Built a Free Polymarket Analytics Dashboard — 6M+ Prices, 7,500 Markets, Updated Every 4 Minutes
Most Polymarket tools show you one market at a time. Price chart, yes/no, maybe a volume number....
Dev.to · manja316
2mo ago
npm audit Is Broken — Here's the Claude Code Skill I Built to Fix It
npm audit Is Broken — Here's the Claude Code Skill I Built to Fix It Dan Abramov called it...
Dev.to · manja316
2mo ago
I Built a $70K Security Bounty Pipeline with AI — Here's the Exact Workflow
Last month I started systematically scanning open-source ML repositories for security vulnerabilities...
Dev.to · manja316
2mo ago
I Analyzed 6 Million Polymarket Prices — Here's Where the Money Actually Flows
I've been collecting Polymarket price data every 4 minutes for the past 3 weeks. 6,091,088 price...
Dev.to · manja316
2mo ago
I Built a Whale Tracker for Polymarket — Here's How Big Wallets Actually Move Markets
Prediction markets are supposed to be efficient. The crowd is supposed to be wise. But after watching...
Dev.to · manja316
2mo ago
I Automated My Entire Code Review with Claude Code Skills — Here's the Setup That Catches Real Bugs
After reviewing code manually for years, I finally built a system that catches the bugs I actually...
Dev.to · manja316
2mo ago
7 TypeScript Type Holes That ESLint Misses (And How to Catch Them Automatically)
Your ESLint config is green. Your tests pass. Your TypeScript code compiles. And you still have type...
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