Arb-OS

Arb-OS presents itself as a full arbitrage engine for Polymarket's Polygon PoS deployment, likely focusing on the NegRisk adapter that enables multi-outcome arbitrage (where probabilities of mutually exclusive outcomes sum to less than 100%). The TypeScript codebase is 1MB, suggesting a complete implementation including smart contract interactions, order book analysis, and execution logic. The 'OS' in the name might indicate an operating-system-like architecture with modular strategy plugins. The repository was created today (July 23, 2026) so there's minimal code to review yet, but the concept is well-trodden in the Polymarket ecosystem—arbitrage between NegRisk outcomes and their constituent conditional markets. The choice of TypeScript is practical for web3 integrations (ethers.js, viem). Without seeing the actual implementation, it's hard to assess code quality or strategy sophistication. The main risk is that arbitrage opportunities on Polymarket are increasingly competitive and latency-sensitive; a TypeScript bot running on standard infrastructure may not capture meaningful edge. However, for learning purposes or as a framework for custom strategies, it could be valuable. I recommend monitoring this repo for the first substantive commit, then evaluating the arbitrage detection algorithm and execution speed. If the author provides a clear README with strategy documentation and backtest results, it could be a strong candidate for cloning. Suitable for TypeScript developers familiar with Polymarket's CLOB and NegRisk contracts.