Sports Arb and Copy-Trading Bots Flood GitHub Today

GitHub Bot Activity — June 28, 2026

Volume and Composition

Twenty repositories tagged to Polymarket were created or meaningfully updated today. The breakdown skews heavily toward execution tooling: eight explicit arbitrage bots, four copy-trading or mirroring clients, three dashboards, and a handful of general-purpose trading terminals. This is one of the busier single-day pushes observed in the past quarter, and the thematic clustering around arbitrage suggests either a coordinating community or a shared codebase being forked under different names.

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Repos Worth Watching

**`multiplex-invertsoap119/polymarket-sports-arbitrage-bot`** — Created and updated today, this TypeScript project targets cross-line arbitrage across Polymarket sports events using the CLOB V2 API. The repo is brand new (77KB, zero stars), but the specificity of the description — cross-line detection, V2 API integration — suggests someone with real API familiarity. Sports markets on Polymarket have historically carried wider spreads than crypto markets, making them a legitimate target for systematic arb. Worth monitoring for public strategy leakage as the codebase matures.

**`Juanp2389/Kalshi-trade-bot`** — This one explicitly targets both Kalshi and Polymarket BTC 15-minute markets simultaneously, looking for price gaps between the two platforms and executing paired trades. Cross-platform arbitrage between regulated and decentralized prediction markets is a meaningful operational challenge involving separate custody, API credentialing, and settlement timing. The fact that someone is packaging this into a deployable TypeScript bot is notable. If it works, it narrows inter-platform spreads that currently represent edge for manual operators.

**`kalliimmunosuppressive504/polymarket-copy-trading-bot`** and **`UnitedStars111/polymarket-copy-trading-bot`** — Two distinct copy-trading implementations pushed on the same day. The first is TypeScript with configurable size limits and interval polling; the second uses a `trade.toml` config and covers politics, sports, and crypto markets. Copy-trading tools commoditize the information advantage of high-performing wallets. Operators running alpha strategies should be aware that on-chain transparency means their positions can be systematically mirrored with sub-minute latency.

**`quipmnxailcrrgky/tradingbot`** — The outlier by social signal: 98 stars, 60 forks, updated today. The generic account name and repository title are red flags consistent with SEO-optimized or socially engineered repositories designed to attract downloads. Do not run code from this repo without full audit. Star counts this high on an account with no credible identity are frequently manufactured.

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Security Alert

**`King102681/polymarket-bot`** carries a repository size of **2,685,691KB — approximately 2.6GB**. A Polymarket trading bot has no legitimate reason to be this large. Plausible explanations include accidentally committed wallet files, large binary blobs, or deliberately bundled malware. Anyone who has cloned or executed code from this repository should consider their API keys and local environment compromised and rotate credentials immediately. This is the single most urgent flag in today's feed.

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Strategy Signals

The concentration of bots targeting **15-minute crypto up/down markets** — seen across at least four repos today — confirms these short-duration markets remain the primary hunting ground for systematic traders. The appeal is mechanical: high turnover, predictable resolution, and pricing that frequently lags spot moves by seconds. The arms race in this segment is intensifying.

The emergence of **hedged spread-making bots** (see `Corettafinnougricspeaking368/Polymarket-Arbitrage-Trading-Bot-Spreadmaker`) targeting both sides of a market with entry cost caps is a more sophisticated posture than simple directional arb. If these strategies scale, expect tighter markets on 15-minute contracts and reduced edge for slower participants.

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Bottom Line

Today's GitHub activity signals a maturing but increasingly crowded automation layer on Polymarket. Sports arb and Kalshi cross-platform tooling represent emerging edges worth tracking. The copy-trading proliferation is a structural threat to any operator whose alpha depends on on-chain anonymity. Rotate keys, audit dependencies, and treat any repo with implausible size or star counts as hostile until proven otherwise.