subxt

Subxt is a Rust library designed for developers to interact programmatically with chains in the Polkadot network. It enables submitting transactions (extrinsics), accessing on-chain data, subscribing to block events, and working with Polkadot chains either directly or via a light client, all through a safe, statically-typed or dynamic interface. Subxt is also WASM compatible for browser environments and has use cases in smart contract CLI tools, relayers, and node monitoring.