ERC-20 Approve Function

Definition ∞ The ERC-20 approve function is a standard method within Ethereum’s ERC-20 token standard that allows a token holder to grant permission to another address, typically a smart contract, to spend a specified amount of their tokens. This delegation of spending authority is crucial for interacting with decentralized applications and exchanges. It enables automated token transfers without requiring direct user interaction for each transaction. This function is a fundamental component of decentralized finance operations.
Context ∞ The ERC-20 approve function is a critical security consideration frequently discussed in crypto news related to smart contract vulnerabilities and exploits. Users are often advised to exercise caution when approving spending limits, as excessive approvals can be exploited by malicious contracts. Understanding its operation is essential for safe interaction within the Ethereum ecosystem.