FOC (Filecoin Onchain Cloud) is building a production-grade onchain service layer for Filecoin that provides programmable warm object storage with cryptographic verification and automated onchain payments. The project delivers developer-facing APIs/SDKs and storage-provider service software to reduce integration complexity, improve reliability and observability, and enable repeatable adoption by Web3 applications. By validating these primitives through mainnet production usage, FOC aims to accelerate paid onchain deals and strengthen Filecoin’s verifiable cloud economy.