# Query

### How to Send a Query Request 

* Command line

```bash
terrad query wasm contract-state smart <contract_address> '<JSON_formed_message>'
```

ex)

```bash
terrad query wasm contract-state smart terra1466nf3zuxpya8q9emxukd7vftaf6h4psr0a07srl5zw74zh84yjqxl5qul '{"pairs":{}}'
```

* RESTFul API

```url
<light_clinet_address>/cosmwasm/wasm/v1/contract/<contract_address>/smart/<JSON_formed_message_with_base64>
```

ex)

```url
https:://terra-classic-lcd.publicnode.com/cosmwasm/wasm/v1/contract/terra1466nf3zuxpya8q9emxukd7vftaf6h4psr0a07srl5zw74zh84yjqxl5qul/smart/eyJwYWlycyI6e319
```

### How to Organize a Query Message&#x20;

You may check `<contract>/src/msg.rs` of each contract.\
Here is an example. Query messages are defined as below:

```rust
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum QueryMsg {
    Balance { address: <Addr> },
    ...
}
```

This is one of the messages

```rust
Balance { address: <Addr> }
```

You may change it into snake case and add within `{}` as like below:

```json
{"balance": {"address": "<Addr>"}}
```

`Addr` is a type, which is bech32-encoded address `terra` prefixed.\
Here is an example:

```json
{"balance": {"address": "terra1n75fgfc8clsssrm2k0fswgtzsvstdaah7la6sfu96szdu22xta0q57rqqr"}}
```

This rule also can be applied to other messages, so you can utilize this guide as a reference for your practice.

<br>