cairo-contract-storage

name: cairo-contract-storage description: Explain Starknet contract storage layout, the storage struct, Store trait, and read/write access; use when a request involves storage variables or storage layout in Cairo.

Cairo Contract Storage

Overview

Explain how contract storage is declared and accessed, and how storage keys are computed.

Quick Use

• Read references/contract-storage.md before answering.
• Use #[storage] struct for storage fields.
• Use .read() and .write() on storage variables in ContractState.

Response Checklist

• Ensure storage field types implement starknet::Store (derive it when possible).
• Mention storage keys are derived from the variable name and hashed.
• Use self or ref self correctly depending on mutability.

Example Requests

• "How do I declare storage in a Cairo contract?"
• "Why does my storage field need Store?"
• "How is the storage key computed for a variable?"