Eggplant SDK for Rust

Eggplant SDK is a highly performant Rust SDK for Polymarket, engineered for correctness and latency with zero dependency on the official SDK. It covers authentication, market data, order placement, cancellation and batch operations, live order book maintenance over WebSocket, fill tracking, and gasless position operations via the relayer.

Latency-focused touches run throughout: hot posting with pinned DNS and isolated connection pools, zero-copy parsing on market and user WebSocket channels, and complete order management with cancel bookkeeping. All four signature types are supported, with wallet CREATE2 derivation for proxy and Safe wallets, rust_decimal throughout for financial precision, and #![forbid(unsafe_code)] for memory safety.

Add eggplant-sdk = "0.1" to your Cargo.toml to get started. It is the Rust sibling of eggplant-sdk-py — the two share one API shape and one set of golden test vectors.