Calling Other Contracts

This guide shows you how to call functions in other contracts from your Aztec smart contracts.

Add the target contract as a dependency

Add the contract you want to call to your Nargo.toml dependencies:

[dependencies]
token = { git="https://github.com/AztecProtocol/aztec-packages/", tag="v3.0.0-nightly.20251231", directory="noir-projects/noir-contracts/contracts/app/token_contract" }

Then import the contract interface at the top of your contract file:

use token::Token;

Call contract functions

Use self.call() to call functions on other contracts:

self.call(Token::at(token_address).transfer(recipient, amount));

The pattern is:

1. Form the call: Contract::at(address).function_name(args)
2. Execute it: self.call(...) or self.view(...) for read-only calls

Private-to-private calls

private_call

let _ = self.call(Token::at(stable_coin).burn_private(from, amount, authwit_nonce));

^{_{Source code: noir-projects/noir-contracts/contracts/app/lending_contract/src/main.nr#L250-L252}}

Public-to-public calls

From a public function, call other public functions directly:

self.call(Token::at(token_address).transfer_in_public(recipient, amount));

Capture return values by assigning the result:

let balance = self.view(Token::at(token_address).balance_of_public(account));

Use self.view() for read-only calls that cannot modify state.

Private-to-public calls

From a private function, enqueue public function calls for later execution:

self.enqueue(Token::at(token_address).mint_to_public(recipient, amount));

info

Public functions execute after all private execution completes. Return values are not available in the private context. Learn more about call types.