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README.md

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 # substrate-api-client
 
-The substrate-api-client is a Rust library for connecting to a [substrate](https://substrate.io/)-based node via RPC from a no-std environment. An RPC client is a library, with similar features as [Polkadot-js](https://wiki.polkadot.network/docs/polkadotjs). With an RPC client developers can easily interact with any [Polkadot](https://polkadot.network/) or [Kusama](https://kusama.network/) chain. There are [RPC clients](https://wiki.polkadot.network/docs/build-tools-index#rpc-and-api-tools) for different programming languages. For Rust, the most popular RPC client is [subxt](https://github.com/paritytech/subxt). The substrate-api-client uses core functionality of subxt and makes it available in a no-std environment.
+The substrate-api-client is a Rust library for connecting to a [substrate](https://substrate.io/)-based node via RPC. It's particularly useful for setups with no-std environment (which are typical for trusted execution environmnets or embedded devices). It provides similar functionalities as [Polkadot-js](https://wiki.polkadot.network/docs/polkadotjs), such as easy extrinsic submission and state queries. With an RPC client, developers can easily interact with any [Polkadot](https://polkadot.network/) or [Kusama](https://kusama.network/) chain. There are several [RPC clients](https://wiki.polkadot.network/docs/build-tools-index#rpc-and-api-tools) available in different programming languages. For Rust, the most popular RPC client is [subxt](https://github.com/paritytech/subxt). The substrate-api-client provides a simpler, less extensive alternative to subxt, focused on providing as many features as possible for no-std environments.
 
 The substrate-api-client connects to the substrate's RPC interface via WebSockets allowing to