Definitions for the Safe configuration, transaction, RPC, hashing, and review terms used throughout the product.

Term	Meaning
Safe	A smart-account wallet that can require multiple owner approvals before execution.
Owner / signer	An address authorized to approve Safe transactions.
Threshold	The number of owner confirmations required for execution.
Module	A contract authorized to execute through the Safe without the normal owner-signature flow.
Guard	An optional contract that checks Safe transactions before or after execution.
Fallback handler	A helper contract used for supported fallback interactions and signature behavior.
Singleton / implementation / mastercopy	The implementation contract whose logic the Safe proxy executes.
Nonce	A counter used to order transactions and prevent replay.
RPC	A network endpoint used to read blockchain state and submit read-only calls.
EIP-712	A standard for hashing typed structured data for signing.
Domain hash	The EIP-712 hash binding typed data to a domain such as chain and verifying contract.
Message hash	The hash of the structured Safe transaction fields.
SafeTxHash	The final Safe transaction fingerprint owners approve.
Calldata	Encoded function and argument data sent to a contract.
Delegatecall	An operation that executes target code in the calling Safe's storage context.
Local draft	A transaction prepared locally but not yet proposed to the Safe Transaction Service.
Awaiting signatures	A proposed transaction that has fewer confirmations than the threshold.
Ready to execute	A proposed transaction with enough confirmations to meet its threshold.
Configuration drift	A difference between the current configuration and the latest snapshot stored in the browser.
Simulation	A point-in-time preview of a transaction's possible effects.
Threat intelligence	Known-risk labels and evidence associated with addresses or activity.
Signing wallet	The wallet or device that displays and approves a transaction signature.

Glossary