Tools

Interaction tools

MetaMask

On the node access page, click Add to MetaMask.

Development tools

Truffle

Configure Truffle Suite (opens new window) to deploy contracts to your Fuse nodes.

1. Install Truffle Suite (opens new window), HD Wallet-enabled Web3 provider (opens new window), and create a project.

2. Create a new environment in truffle-config.js, add your mnemonic phrase generated by a wallet (opens new window) and the node endpoint:

• Key-protected
• Password-protected

const HDWalletProvider = require("@truffle/hdwallet-provider");
const mnemonic = 'pattern enroll upgrade ...';
...
module.exports = {
 networks: {
    chainstack: {
        provider: () => new HDWalletProvider(mnemonic, "https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d"),
        network_id: "*"
    },
   }
  }
};

const HDWalletProvider = require("@truffle/hdwallet-provider");
const mnemonic = 'pattern enroll upgrade ...';
...
module.exports = {
 networks: {
    chainstack: {
        provider: () => new HDWalletProvider(mnemonic, "https://user-name:[email protected]"),
        network_id: "*"
    },
   }
  }
};

Hardhat

Configure Hardhat (opens new window) to deploy contracts and interact through your Fuse nodes.

1. Install Hardhat (opens new window) and create a project.

2. Create a new environment in hardhat.config.js:

require("@nomiclabs/hardhat-waffle");
...
module.exports = {
  solidity: "0.7.3",
  networks: {
    chainstack: {
        url: "ENDPOINT",
        accounts: ["PRIVATE_KEY"]
    },
   }
};

where

• ENDPOINT — your node HTTPS or WSS endpoint.
• PRIVATE_KEY — the private key of the account that you use to deploy the contract.

See also View node access and credentials.

Example:

• Key-protected
• Password-protected

require("@nomiclabs/hardhat-waffle");
...
module.exports = {
  solidity: "0.7.3",
  networks: {
    chainstack: {
        url: "https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d",
        accounts: ["ee5dda7d38d194783d32adcfc961401108b8fdde27e8fee115553959d434e68b"]
    },
   }
};

require("@nomiclabs/hardhat-waffle");
...
module.exports = {
  solidity: "0.7.3",
  networks: {
    chainstack: {
        url: "https://user-name:[email protected]",
        accounts: ["ee5dda7d38d194783d32adcfc961401108b8fdde27e8fee115553959d434e68b"]
    },
   }
};

3. Run npx hardhat run scripts/deploy.js --network chainstack and Hardhat will deploy using Chainstack.

web3.js

Build DApps using web3.js (opens new window) and Fuse nodes deployed with Chainstack.

HTTP

1. Install web3.js (opens new window).
2. Use the HttpProvider object to connect to your node HTTPS endpoint.

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.HttpProvider('ENDPOINT'));

where

• ENDPOINT — your node HTTPS endpoint.

Example to get the latest block number:

• Key-protected
• Password-protected

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.HttpProvider('https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d'));

web3.eth.getBlockNumber().then(console.log);

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.HttpProvider('https://user-name:[email protected]'));

web3.eth.getBlockNumber().then(console.log);

WebSocket

1. Use the WebsocketProvider object to connect to your node WSS endpoint.

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.WebsocketProvider('ENDPOINT'));

where

• ENDPOINT — your node WSS endpoint.

Example to get the latest block number:

• Key-protected
• Password-protected

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.WebsocketProvider('wss://ws-nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d'));

web3.eth.getBlockNumber().then(console.log);

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.WebsocketProvider('wss://user-name:[email protected]'));

web3.eth.getBlockNumber().then(console.log);

web3.py

Build DApps using web3.py (opens new window) and Fuse nodes deployed with Chainstack.

1. Install web3.py (opens new window).
2. Connect over HTTP or WebSocket. See also EVM node connection: HTTP vs WebSocket.

HTTP

Use the HTTPProvider to connect to your node HTTPS endpoint.

• Key-protected
• Password-protected

from web3 import Web3

web3 = Web3(Web3.HTTPProvider('ENDPOINT'))

from web3 import Web3

web3 = Web3(Web3.HTTPProvider('https://%s:%[email protected]%s'% ("USERNAME", "PASSWORD", "HOSTNAME")))

where

• ENDPOINT — your node HTTPS endpoint.
• HOSTNAME — your node HTTPS endpoint hostname.
• USERNAME — your node access username.
• PASSWORD — your node access password.

Example to get the latest block number:

• Key-protected
• Password-protected

from web3 import Web3

web3 = Web3(Web3.HTTPProvider('https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d'))
print(web3.eth.blockNumber)

from web3 import Web3

web3 = Web3(Web3.HTTPProvider('https://%s:%[email protected]%s'% ("user-name", "pass-word-pass-word-pass-word", "nd-123-456-789.p2pify.com")))
print(web3.eth.blockNumber)

WebSocket

Use the WebsocketProvider object to connect to your node WSS endpoint.

• Key-protected
• Password-protected

from web3 import Web3

web3 = Web3(Web3.WebsocketProvider('ENDPOINT'))

from web3 import Web3

web3 = Web3(Web3.WebsocketProvider('wss://%s:%[email protected]%s'% ("USERNAME", "PASSWORD", "HOSTNAME")))

where

• ENDPOINT — your node WSS endpoint.
• HOSTNAME — your node WSS endpoint hostname.
• USERNAME — your node access username.
• PASSWORD — your node access password.

Example to get the latest block number:

• Key-protected
• Password-protected

from web3 import Web3

web3 = Web3(Web3.WebsocketProvider('wss://ws-nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d'))
print(web3.eth.blockNumber)

from web3 import Web3

web3 = Web3(Web3.WebsocketProvider('wss://%s:%[email protected]%s'% ("user-name", "pass-word-pass-word-pass-word", "ws-nd-123-456-789.p2pify.com")))
print(web3.eth.blockNumber)

TIP

See also WebSocket connection to an EVM node.

web3.php

Build DApps using web3.php (opens new window) and Fuse nodes deployed with Chainstack.

1. Install web3.php (opens new window).
2. Connect over HTTP:

<?php

require_once "vendor/autoload.php";

use Web3\Web3;
use Web3\Providers\HttpProvider;
use Web3\RequestManagers\HttpRequestManager;

$web3 = new Web3(new HttpProvider(new HttpRequestManager("ENDPOINT", 5)));
?>

where ENDPOINT is your node HTTPS endpoint.

3. Use JSON-RPC methods (opens new window) to interact with the node.

Example to get the latest block number:

• Key-protected
• Password-protected

<?php

require_once "vendor/autoload.php";

use Web3\Web3;
use Web3\Providers\HttpProvider;
use Web3\RequestManagers\HttpRequestManager;

$web3 = new Web3(new HttpProvider(new HttpRequestManager("https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d", 5)));

$eth = $web3->eth;

$eth->blockNumber(function ($err, $data) {
        print "$data \n";
});
?>

<?php

require_once "vendor/autoload.php";

use Web3\Web3;
use Web3\Providers\HttpProvider;
use Web3\RequestManagers\HttpRequestManager;

$web3 = new Web3(new HttpProvider(new HttpRequestManager("https://user-name:[email protected]", 5)));

$eth = $web3->eth;

$eth->blockNumber(function ($err, $data) {
        print "$data \n";
});
?>

ethers.js

Build DApps using ethers.js (opens new window) and Fuse nodes deployed with Chainstack.

1. Install ethers.js (opens new window).
2. Connect over HTTP or WebSocket.

HTTP

Use the JsonRpcProvider object to connect to your node HTTPS endpoint.

• Key-protected
• Password-protected

const { ethers } = require("ethers");

var urlInfo = {
    url: 'ENDPOINT'
};
var provider = new ethers.providers.JsonRpcProvider(urlInfo, NETWORK_ID);

const { ethers } = require("ethers");

var urlInfo = {
    url: 'ENDPOINT',
    user: 'USERNAME',
    password: 'PASSWORD'
};
var provider = new ethers.providers.JsonRpcProvider(urlInfo, NETWORK_ID);

where

• ENDPOINT — your node HTTPS endpoint.
• USERNAME — your node access username.
• PASSWORD — your node access password.
• NETWORK_ID — Fuse network ID:
  • Mainnet: 122
  • Spark testnet: 123

Example to get the latest block number on mainnet:

• Key-protected
• Password-protected

const { ethers } = require("ethers");

var urlInfo = {
    url: 'https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d'
};
var provider = new ethers.providers.JsonRpcProvider(urlInfo, 100);

provider.getBlockNumber().then(console.log);

const { ethers } = require("ethers");

var urlInfo = {
    url: 'https://nd-123-456-789.p2pify.com',
    user: 'user-name',
    password: 'pass-word-pass-word-pass-word'
};
var provider = new ethers.providers.JsonRpcProvider(urlInfo, 100);

provider.getBlockNumber().then(console.log);

WebSocket

Use the WebSocketProvider object to connect to your node WSS endpoint.

const { ethers } = require("ethers");

const provider = new ethers.providers.WebSocketProvider('ENDPOINT', NETWORK_ID);

where

• ENDPOINT — your node WSS endpoint.
• NETWORK_ID — Fuse network ID:
  • Mainnet: 122
  • Spark testnet: 123

Example to get the latest block number on mainnet:

• Key-protected
• Password-protected

const { ethers } = require("ethers");

const provider = new ethers.providers.WebSocketProvider('wss://ws-nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d', 100);

provider.getBlockNumber().then(console.log);

const { ethers } = require("ethers");

const provider = new ethers.providers.WebSocketProvider('wss://user-name:[email protected]', 100);

provider.getBlockNumber().then(console.log);

Brownie

1. Install Brownie (opens new window).
2. Use the brownie networks add command with the node endpoint:

brownie networks add Fuse ID name="NETWORK_NAME" host=KEY_ENDPOINT chainid=NETWORK_ID

where

• ID — any name that you will use as the network tag to run a deployment. For example, chainstack-mainnet.
• NETWORK_NAME — any name that you want to identify the network by in the list of networks. For example, Mainnet (Chainstack).
• ENDPOINT — your node HTTPS or WSS endpoint.
• NETWORK_ID — Fuse network ID:
  • Mainnet: 122
  • Spark testnet: 123

Example to add a Fuse mainnet node to the list of Brownie networks:

• Key-protected
• Password-protected

brownie networks add Fuse fuse-mainnet name="Mainnet (Chainstack)" host=https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d chainid=100

brownie networks add Fuse fuse-mainnet name="Mainnet (Chainstack)" host=https://user-name:[email protected] chainid=100

Example to run the deployment script:

brownie run deploy.py --network fuse-mainnet

Foundry

1. Install Foundry (opens new window).
2. Use --rpc-url to run the operation through your Chainstack node.

Forge

Use forge (opens new window) to develop, test, and deploy your smart contracts.

To deploy a contract:

forge create CONTRACT_NAME --contracts CONTRACT_PATH --private-key PRIVATE_KEY --rpc-url ENDPOINT

where

• CONTRACT_NAME — name of the contract in the Solidity source code.
• CONTRACT_PATH — path to your smart contract.
• PRIVATE_KEY — the private key to your funded account that you will use to deploy the contract.
• ENDPOINT — your node HTTPS endpoint.

Example to deploy the simple storage (opens new window) contract:

• Key-protected
• Password-protected

forge create SimpleStorage --contracts /root/foundry/contracts/simplestorage.sol --private-key 9c4b7f4ad48f977dbcdb2323249fd738cc9ff283a7514f3350d344e22c5b923d --rpc-url https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d

forge create --contracts /root/foundry/contracts/simplestorage.sol --rpc-url https://user-name:[email protected]

Cast

Use cast (opens new window) to interact with the network and the deployed contracts.

To get the latest block number:

cast block-number --rpc-url ENDPOINT

where ENDPOINT is your node HTTPS endpoint.

Example:

• Key-protected
• Password-protected

cast block-number --rpc-url https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d

cast block-number --rpc-url https://user-name:[email protected]

See also

• Simple multisig contract with Hardhat