Cargo-contract is a robust command-line interface tool designed to streamline the development of smart contracts using Parity’s ink!, a Rust-based embedded Domain Specific Language (eDSL) for writing smart contracts on Substrate-based blockchains. It offers a complete suite of commands for contract creation, compilation into WebAssembly bytecode, deployment, instantiation, and interaction, ensuring seamless integration with blockchain environments that support pallet-contracts. Installation requires Rust and a C++17 compatible compiler, with optional Docker support for verifiable builds. The tool encourages new version publication with a systematic update and tagging process and is distributed under the GPLv3 license, emphasizing transparency and community involvement. Comprehensive user resources, including a beginner’s tutorial, ink! documentation, and a supportive Stack Exchange community, further enhance the development experience.