FLIP 330: Scheduled Callbacks

[devbugging]

Issue for FLIP 330
PR #331

Abstract
In traditional blockchain architectures, application state transitions occur only in response to externally submitted transactions. This design limits the autonomy of on-chain applications, preventing them from operating independently.

Flow introduces scheduled callbacks, a novel mechanism that enables smart contracts to autonomously trigger actions at predefined times.

Scheduled callbacks enable a contract to “wake up” and execute logic based on on-chain state, allowing for recurring tasks, deferred operations, or reactive behaviors. This unlocks a wide range of powerful use cases, such as autonomous arbitrage bots, recurring subscription services, automated transaction batching, self-destructing wallets, and other advanced decentralized logic patterns.