Approvals

Definition ∞ Approvals are cryptographic signals that grant permission for a smart contract or another address to spend or interact with a user’s digital assets. They function as a delegated authority, specifying the exact amount or type of asset that can be accessed. This authorization is a critical component of decentralized finance (DeFi) protocols, enabling automated interactions with tokens. Proper management of approvals is essential for maintaining security and preventing unintended asset transfers.
Context ∞ News often features discussions about the risks associated with excessive or outdated token approvals, particularly in relation to smart contract vulnerabilities. Debates frequently arise regarding the best practices for revoking or managing these permissions to safeguard user funds. The emergence of new DeFi applications often necessitates understanding their specific approval requirements and associated security implications.