Oracles

Oracles provide smart contracts with off-chain data such as asset prices. RedStone operates price feeds on Stable.

Overview table

Provider	Category	Supported Pairs	Docs / Get Started	Notes
RedStone	Oracle Price Feeds	BTC, ETH, USDT, USDC, PYUSD, XAUt, frxUSD, FXS, LBTC, sfrxETH/ETH, sfrxUSD, SolvBTC, sthUSD, thBILL, weETH	https://docs.redstone.finance/docs/dapps/redstone-push/	Live on mainnet

RedStone

RedStone provides oracle price feeds on Stable through its Push model. Feed contracts expose the Chainlink-compatible AggregatorV3Interface.

Capabilities

Push-based price feeds with configurable deviation thresholds and heartbeat intervals
Chainlink-compatible AggregatorV3Interface with latestRoundData(), decimals(), and description()
Coverage for blue-chip assets, stablecoins, LSTs, LRTs, and yield-bearing / fundamental-priced assets

Mainnet price feed addresses

Source: RedStone push feeds dashboard

Price Feed	Contract Address	Deviation	Heartbeat
BTC / USD	0x687103bA8CC2f66C94696182Ef410400Da45fb24	0.5%	6h
ETH / USD	0x457BE3C697c644bF329C2C3ea79EbF1D254d603a	0.5%	6h
USDT / USD	0x58264801fadCd8598D3EE993572ADe9cA27F42c8	0.5%	6h
USDC / USD	0x8ea3C667C264BbdaA1dA7638904b8671F451c7F9	0.5%	6h
PYUSD / USD	0x1c30dA143E97c228102A5cAe3960dBBB41321604	0.5%	6h
XAUt / USD	0xd5E244accc514b56DCAD89897DD44499E7C35a05	0.5%	6h
frxUSD / USD	0xB5197ca89507FE045e8ce9996593D35071915EB7	0.5%	6h
FXS / USD	0xC3b182aee94AECeCa39b072942f3Ce4B87465517	0.5%	6h
LBTC / USD	0x80295Cf12E28f3F943304BFd6C2A2C044e731aaB	0.5%	6h
sfrxETH / ETH	0x29533E113D803ab1967F6CB9495B95DC8C1EA594	0.5%	6h
sfrxUSD / FUNDAMENTAL	0x71784611831b9566df7301A78bC1B3d29a8737bF	0.5%	6h
SolvBTC / FUNDAMENTAL	0x58fa68A373956285dDfb340EDf755246f8DfCA16	0.01%	24h
sthUSD / FUNDAMENTAL	0xb81131B6368b3F0a83af09dB4E39Ac23DA96C2Db	0.5%	12h
thBILL / FUNDAMENTAL / USD	0x7532df197a36587aeD2B9A59785c8BeD182FA62D	0.5%	6h
weETH / FUNDAMENTAL	0xD57b79401956BE4872D3d03F0C920639335e350F	0.5%	6h

Reading a price feed

Feed contracts implement the Chainlink-compatible AggregatorV3Interface. The same consumer pattern used for any Chainlink-style price feed applies.

pragma solidity ^0.8.25;
 
interface AggregatorV3Interface {
    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );
    function decimals() external view returns (uint8);
    function description() external view returns (string memory);
}
 
contract OracleConsumer {
    AggregatorV3Interface public oracle;
 
    constructor(address oracleAddress) {
        oracle = AggregatorV3Interface(oracleAddress);
    }
 
    function getLatestPriceData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 updatedAt
        )
    {
        (roundId, answer, , updatedAt, ) = oracle.latestRoundData();
        return (roundId, answer, updatedAt);
    }
}

Reading a feed directly

You can read any RedStone feed without deploying a consumer contract. The following call reads the ETH/USD feed:

cast call 0x457BE3C697c644bF329C2C3ea79EbF1D254d603a "latestRoundData()(uint80,int256,uint256,uint256,uint80)" --rpc-url https://rpc.stable.xyz

Deploying a consumer to Stable mainnet

This assumes you have Foundry installed and a funded wallet. See the Deploy Smart Contract tutorial for full setup instructions.

Save the contract above to src/OracleConsumer.sol in a Foundry project.
Deploy with the BTC/USD mainnet feed address:

source .env ;
forge create src/OracleConsumer.sol:OracleConsumer --broadcast --rpc-url $STABLE_MAINNET_RPC_URL --private-key $PRIVATE_KEY --constructor-args 0x687103bA8CC2f66C94696182Ef410400Da45fb24

Read the latest price from your deployed contract:

cast call <DEPLOYED_ADDRESS> "getLatestPriceData()(uint80,int256,uint256)" --rpc-url $STABLE_MAINNET_RPC_URL

Have an oracle integrating Stable?

Reach the team at bizdev@stable.xyz to be listed on this page.