Remote type

Your contract may rely on communication with another one. For example, it could instantiate a CW20 contract and, during the workflow, send Mint messages to it. If CW20 contract was created using sylvia, it would have a Remote type generated which would make this process more user friendly. Currently, it is only possible to send queries using Remote but support for the execute messages is on the way.

To check some examples, checkout the sylvia repository and go to sylvia/tests/

Working with Remote

Remote represents some contract instantiated on the blockchain. It aims to give contract developers a gateway to communicate with other contracts. It has only one field, which is a remote contract address. It exposes only a single method called querier, which returns a BoundQuerier type. BoundQuerier has a method for every contract/interface query. If we create a contract relying on our CounterContract, it could query its state as below.

let count = Remote::new(addr)

let admins = crate::whitelist::Remote::new(

In case of contract initializing the CW20 contract you might want to keep its address in the state.

struct Contract {
    cw20: cw20::Remote<'static>,

Then somewhere in your code just create the querier from your remote and query.


Next step

In front of us is the last chapter of sylvia basics. Let's learn about some good practices before we will get to writing our own contracts.