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Price Oracle

Every 30 seconds, all 75 validators in the Kujira active set are required to post a transaction containing the current price for a range of assets, aggregated from a number of sources. This creates an on-chain source of truth which can be queried from a UI front-end, the CLI and also in smart contracts.

REST

You can fetch all exchange rates here: https://lcd.kaiyo.kujira.setten.io/oracle/denoms/exchange_rates

Or just a specific one at eg https://lcd.kaiyo.kujira.setten.io/oracle/denoms/ATOM/exchange_rate

CLI

kujirad query oracle exchange-rates

CosmWASM

The kujira-rs package provides queryable bindings to fetch current exchange rates inside your smart contracts:

{% embed url="https://docs.rs/kujira/0.7.5/kujira/msg/enum.KujiraMsg.html" %}

use kujira::querier::KujiraQuerier;
use kujira::query::KujiraQuery;

pub fn query(deps: Deps<KujiraQuery>, env: Env, msg: QueryMsg) -> StdResult<Binary> {
    let q = KujiraQuerier::new(&deps.querier);
    let res = q.query_exchange_rate("ATOM".to_string())?;
    let price = res;
    Ok(to_binary(&price))
}

Note that the type signature for a query interface that uses this must be