> ## Documentation Index
> Fetch the complete documentation index at: https://starkware-9575960b-starknet-privacy-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# core::starknet::syscalls::deploy_syscall

Deploys a new instance of a previously declared class.

## Signature

```rust theme={null}
pub extern fn deploy_syscall(class_hash: ClassHash, contract_address_salt: felt252, calldata: Span, deploy_from_zero: bool) -> Result), Array> implicits(GasBuiltin, System) nopanic;
```

#### Arguments

* `class_hash` - The class hash of the contract to be deployed.
* `contract_address_salt` - The salt, an arbitrary value provided by the deployer, used in the
  computation of the contract's address.
* `calldata` - Call arguments for the constructor.
* `deploy_from_zero` - Deploy the contract from the zero address.

#### Returns

* The address of the deployed contract.
* The serialized return value of the constructor.