Weather Bots and Copy-Trading Scripts Flood Polymarket Dev Space
GitHub activity for June 25 reveals a surge in automated Polymarket tooling, with weather arbitrage bots and copy-trading scripts representing the two fastest-growing strategy categories. Operators should note several high-traction repositories with suspicious star/fork ratios that warrant closer scrutiny before deployment or competitive analysis.
GitHub Sweep: June 25, 2026
Overview
Today's GitHub scan returned 20 Polymarket-adjacent repositories with activity on June 25. The cohort spans execution bots, arbitrage dashboards, copy-trading scripts, and a notable cluster of weather market tools. Volume is elevated relative to recent weeks. Below is a structured breakdown of what matters.
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Weather Markets Are Getting Automated
The single most tactically relevant development this sweep is the concentration of weather-focused tooling. Two repositories stand out.
**`yangyuan-zhen/PolyWeather`** (161 stars, 36 forks) is the most-starred repo in today's set and describes itself as a "Polymarket Intelligent Weather Quant Analysis Bot." At 145MB it is a substantial codebase, and the star count suggests genuine adoption or at minimum significant promotion. Operators active in Polymarket temperature and precipitation markets should assume automated participants are present and pricing accordingly.
**`BallesJr/polymarket-weather-edge`** takes a more specific angle: it targets the NO side of overpriced temperature markets using live METAR observations and Open-Meteo forecasts fed into a Gaussian probability model. This is a paper-trading bot currently, but the methodology is sound and the repo is only two months old. Watch for a live deployment version. The implication for manual traders: if you are buying YES on temperature markets without access to METAR data, you may be on the wrong side of an information gap.
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Copy-Trading Infrastructure Is Maturing
Two repositories address copy-trading directly. **`kalliimmunosuppressive504/polymarket-copy-trading-bot`** (TypeScript, interval polling, custom size limits) and **`UnitedStars111/polymarket-copy-trading-bot`** (config via trade.toml, covers politics, sports, and crypto) both updated today. The UnitedStars repo was originally created in April 2023, making it one of the older tools in this space still receiving active maintenance — a signal that the underlying approach is producing results worth sustaining.
For operators: if you are a high-volume trader with a public address, assume you have followers. Position sizing and entry timing obfuscation are no longer optional considerations.
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Arbitrage Tooling: 15-Minute Crypto Markets Remain the Target
Three repositories focus on arbitrage in Polymarket's 15-minute crypto Up/Down markets: **`kenfri13/polymarket-arbitrage-trading-bot`**, **`Juanp2389/Kalshi-trade-bot`** (which spans both Kalshi and Polymarket BTC markets), and **`Corettafinnougricspeaking368/Polymarket-Arbitrage-Trading-Bot-Spreadmaker`**. The Kalshi cross-platform bot is notable — it explicitly targets price gaps between the two platforms on the same underlying. Operators who trade BTC short-duration markets on either platform should factor in that latency arbitrage bots are active on this spread.
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Security Flag: High Star Counts on Anonymous Repos
**`quipmnxailcrrgky/tradingbot`** (98 stars, 60 forks) and **`bit-nexusxtitmtdsuy/Polymarket_Bot`** (32 stars, 17 forks) both carry meaningfully high engagement numbers attached to usernames that are clearly auto-generated strings. This pattern is consistent with star-farming used to promote malicious or credential-harvesting repositories. Neither repo carries a meaningful description. Operators should not run code from either without full source audit. Treat both as high-risk until proven otherwise.
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World Cup Tooling
**`polydex4/2026-worldcup-prediction-market`** is aggressively keyword-stuffed in its description, suggesting SEO or app-store-style discovery gaming rather than serious tooling. The underlying concept — a simulation and ticket resale system for World Cup prediction markets — is timely given the tournament is active. Low stars, low forks; flag for monitoring but not a priority.
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Bottom Line
Weather markets and 15-minute crypto markets are the two verticals seeing the most automated attention right now. Copy-trading of known wallets is an active and maturing practice. Two high-star anonymous repos represent a concrete security risk for anyone sourcing bot code from GitHub without due diligence. The overall bot development tempo on Polymarket continues to accelerate heading into the second half of 2026.