Information
What Is a Token Approval and How Does It Work?
A token approval can authorize a smart contract to spend a specified amount of a token on your behalf. Understand spender permissions, allowance amounts, and why reviewing approvals matters.
Approval versus transfer
An approval generally sets an allowance for a spender contract; it is not necessarily the same as transferring tokens at that moment. A later interaction may use the allowance according to the contract rules.
Review the spender and amount
Check which contract is being authorized and the requested allowance. Avoid approving a request when the spender or purpose is unclear. Token approvals can carry risk if the approved contract is malicious or compromised.
Manage permissions thoughtfully
Wallets and independent tools may offer ways to inspect or revoke allowances, but revocation can require a network transaction and fee. Verify the tool and contract details before using them.
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