Historical retrospective · Ethereum
EIP-165 standardized smart-contract interface detection
EIP-165 defines a way for a contract to report which interfaces it supports through interface identifiers.
Applications can query capabilities instead of relying only on a contract’s name or external documentation.
The pattern supported later token and application standards that need predictable contract discovery.
A contract’s reported interface is not an audit or guarantee of safe behavior; implementations can still be flawed.
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