SIZE provides APIs and SDKs that help developers integrate cryptocurrency functionality into new or existing applications. Designed for use across major programming languages, its tools support secure cloud wallets, on-chain swaps, spot trades, automated trigger orders, and transaction monitoring. Wallets are non-custodial and secured through on-chain smart contract policies, which can be customized to suit different applications. Developers can also combine DeFi protocols to execute complex trades and connect external tools and services within blockchain workflows.

The platform is intended for projects ranging from individual experiments to professional and enterprise deployments. Its Basic plan includes one cloud wallet, while Pro offers expanded wallet capacity, custom policies, sponsorship, and collaboration tools. Enterprise options include tailored fees, unlimited wallet orchestration, custom decentralized application development, on-premises deployment, and advanced analytics and reporting. SIZE also highlights integrations with services such as Oracle Cloud, PostgreSQL, and OpenAI, alongside tools for building workflows that interact with crypto. With straightforward APIs and cross-language support, the brand aims to make crypto features easier to build and operate.