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create2-patterns

Use when deploying contracts to deterministic addresses with CREATE2. Covers address prediction, salt selection, factory patterns, cross-chain same-address deployment, CREATE3, vanity addresses, and replay protection.

skills/create2-patterns/SKILL.md

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# CREATE2 Deterministic Deployment Patterns

## Address Calculation

CREATE2 address is determined by four inputs:

```
address = keccak256(0xff ++ deployer ++ salt ++ keccak256(initCode))[12:]
```

```solidity
function computeAddress(bytes32 salt, bytes32 initCodeHash, address deployer)
    internal pure returns (address)
{