Reference → dAPIs → Understanding dAPIsProxy contracts
Proxy contracts are generated and deployed by the API3 Market and allow for simple access to dAPIs by any dApp. Access the API3 Market UI to easily obtain the address of a proxy contract and use it to read the value of its dAPI. Each proxy contract is linked to a single dAPI on a particular network.
dApp owners use the address of a proxy contract to read dAPIs with the IProxy interface. See the guide Reading a dAPI proxy for a complete working example.
IProxy interface contracts
The IProxy interface is available for Solidity versions 8x and greater but can be easily adapted for earlier versions. The interface is available in the npm package @api3/contracts under
/@api3/contracts/api3-server-v1/proxies/interfaces/IProxy.sol.
// imports for Solidity versions 8x and greater
import "@api3/contracts/api3-server-v1/proxies/interfaces/IProxy.sol";Usage
Use the address of a proxy contract to read dAPIs with IProxy. See the guide Reading a dAPI proxy for a complete working example. Proxy contract addresses are available on the API3 Market.
import "@api3/contracts/api3-server-v1/proxies/interfaces/IProxy.sol";
...
(value, timestamp) = IProxy(proxyAddress).read();