Plasma is fully EVM compatible, allowing you to use standard Ethereum tooling while benefiting from features optimized for stablecoin-native applications. To learn more about Plasma’s architecture details, see the Architecture Overview section.

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Verify RPC Connectivity

A public RPC endpoint is available at testnet-rpc.plasma.to: 
curl --location  --header 'Content-Type: application/json' --data '{"method":"eth_blockNumber","params":[],"id":1,"jsonrpc":"2.0"}'
This should output something like: 
{"jsonrpc":"2.0","id":1,"result":"0x9f61b"}
This endpoint is rate-limited. For production use or high-frequency requests, consider using a partner RPC provider.

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Configuring Development Tools

Below are examples for Hardhat and Truffle:

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Hardhat

Create or modify your hardhat.config.js file to include Plasma testnet settings: 
module.exports = {
  networks: {
    // Plasma testnet
    plasmaTestnet: {
      url: "https://testnet-rpc.plasma.to",
      chainId: 9746,
      accounts: [<YOUR_PRIVATE_KEYS>]
    }
  },
  solidity: {
    version: "0.8.20",
    settings: {
      optimizer: {
        enabled: true,
        runs: 200
      }
    }
  }
};

​
Truffle Configuration

If you’re using Truffle, update your truffle-config.js: 
const HDWalletProvider = require('@truffle/hdwallet-provider');

module.exports = {
  networks: {
    plasmaTestnet: {
      provider: () => new HDWalletProvider(
        "<YOUR_MNEMONIC_HERE>",
        "https://testnet-rpc.plasma.to",
      ),
      network_id: 9746,
      gas: 5500000,
    }
  },
  compilers: {
    solc: {
      version: "0.8.20",
      settings: {
        optimizer: {
          enabled: true,
          runs: 200
        }
      }
    }
  }
};

​
Wallet Integration

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Web3.js Integration

const Web3 = require('web3');
const web3 = new Web3('https://testnet-rpc.plasma.to');

// Check connection
web3.eth.getBlockNumber()
  .then(blockNumber => console.log('Connected to Plasma node. Current block:', blockNumber))
  .catch(error => console.error('Connection error:', error));

​
Ethers.js Integration

const { ethers } = require('ethers');
const provider = new ethers.providers.JsonRpcProvider('https://testnet-rpc.plasma.to');

// Check connection
provider.getBlockNumber()
  .then(blockNumber => console.log('Connected to Plasma node. Current block:', blockNumber))
  .catch(error => console.error('Connection error:', error));

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Validate Setup

Create a simple script to verify your development environment is correctly set up: 
const { ethers } = require('ethers');

async function testSetup() {
  // Connect to the Plasma node.
  const provider = new ethers.providers.JsonRpcProvider('https://testnet-rpc.plasma.to');
  
  // Get network information.
  const network = await provider.getNetwork();
  console.log('Connected to network:', network);
  
  // Get current block number.
  const blockNumber = await provider.getBlockNumber();
  console.log('Current block number:', blockNumber);
  
  // Get account balances.
  const signer = provider.getSigner();
  const address = await signer.getAddress();
  const balance = await provider.getBalance(address);
  console.log('Account address:', address);
  console.log('Balance:', ethers.utils.formatEther(balance), 'ETH');
}

testSetup()
  .then(() => console.log('Setup test completed successfully'))
  .catch(error => console.error('Setup test failed:', error));

​
Troubleshooting

IssueAction
Connection refusedConfirm RPC endpoint is correct and accessible
Gas estimation failedEnsure wallet has sufficient XPL
Solidity version errorUpdate config to match compiler version supported by Plasma
Transaction failsVerify RPC URL and correct chain ID: 9746 for testnet, 9747 for local devnet