PMXT is a unified prediction market SDK that aggregates data and trading across 15+ venues (Polymarket, Kalshi, Limitless, etc.) into a single, consistent interface. The system provides a core TypeScript library with a local sidecar server (Express), plus TypeScript, Python, and CLI SDKs that support both self-hosted and hosted (trade.pmxt.dev) modes. It offers market data (events, order books, trades, OHLCV), WebSocket streaming, order management (create, cancel, fetch), account balance and positions, cross-venue router for event matching and arbitrage, and data feeds (Binance, Chainlink). The architecture is a monorepo with workspaces core, sdks/typescript, sdks/python, sdks/cli, and tools. Each exchange follows a clean fetcher → normalizer → error mapper pattern, and the SDK surfaces are partially generated from the core's method signatures. While primarily an application SDK, the project includes significant data normalization, cross-venue data aggregation, and a router for analytical queries, giving it a hybrid character.