Call Contract Endpoint

Interact easily with Smart Contracts with this endpoint

POST localhost:9680/callContract
Parameters
contractAddress - string Contract address to interact with
functionName - string Smart contract function to interact with
abi - Array<AbiItem> (Optional) ABI of the contract to call
params - Array<string> (Optional) Params to call the smart contract function with
valueInWei - string (Optional) Amount of wei to send
gasLimit - string (Optional) Gas limit for the function call
chain - Object used to ensure the user is on the correct chain (follows the MetaMask specification)
chainId - string Base 10 string matching the chain id on Chainlist​
chainMetadata (Optional) - Object used to add the chain if the user does not have the chain added to their wallet
chainName - string 
nativeCurrency - Object
name - string is the currency's name
symbol - string 2-6 characters long symbol for the chain
decimals - 18
rpcUrls - Array<string> is an array of rpc node urls that can be used to make requests. We recommend selecting a few from the listing on Chainlist​
blockExplorerUrls (Optional) - Array<string> is an array of block explorers that can be used with the chain
iconUrls (Optional) - Array<string> is currently unused by MetaMask
Returns
Mixed - the return value(s) of the smart contract method. If it returns a single value, it’s returned as is. If it has multiple return values they are returned as an object with properties and indices: 
Example
// MULTI-ARGUMENT RETURN:
​
// Solidity
contract MyContract {
    function myFunction() returns(uint256 myNumber, string myString) {
        return (23456, "Hello!%");
    }
}
​
// /callContract Result:
> Result {
    myNumber: '23456',
    myString: 'Hello!%',
    0: '23456', // these are here as fallbacks if the name is not know or given
    1: 'Hello!%'
}
​
​
// SINGLE-ARGUMENT RETURN:
// Solidity
contract MyContract {
    function myFunction() returns(string myString) {
        return "Hello!%";
    }
}
​
// /callContract Result:
> "Hello!%"

Function with Struct Param

Call Contract Example

Last modified 3mo ago