Multi-Chain Test Deployer

WHAT IT DOES

Multi-Chain Test Deployer lets you deploy your smart contract to multiple EVM testnet networks in a single workflow. Enter your contract bytecode, optionally provide the ABI and constructor arguments, select which testnets to deploy to (Goerli, Sepolia, Polygon, Arbitrum, Optimism), and the tool handles the rest. It encodes the constructor call, estimates gas, and sends the deployment transaction sequentially to each selected network. The tool provides real-time status updates for each chain, showing transaction hashes, confirmation status, and the deployed contract address. This is essential for developers who need to test their contracts across multiple chains quickly and consistently, without manually switching networks and repeating the deployment process.

HOW TO USE

Connect your EVM wallet (required—deployment requires signing). Paste your contract bytecode (starting with 0x). Optionally provide the contract ABI and constructor arguments as a comma-separated list to encode the constructor call. Select the testnet networks you want to deploy to (checkboxes). Optionally set a gas limit (if left empty, the tool estimates it). Click "2. review" to see a summary of the deployment: deployer address, networks selected, bytecode size, gas estimate, and constructor arguments. Click "deploy to N chain(s)" to start the sequential deployment. The tool switches networks automatically, sends the transaction, waits for confirmation, and displays the result for each chain. No manual network switching required.

TECHNICAL MECHANISM

The tool uses ethers.js v5.7.2 via the BGWallet provider and signer. It parses the ABI (if provided) to encode constructor arguments using ethers.utils.Interface.encodeDeploy(). The deployment transaction is created with the encoded data and gas limit. For each selected network, the tool uses BGWallet.switchNetwork() to switch the wallet to the target chain, fetches the current gas price with provider.getGasPrice(), sends the transaction using signer.sendTransaction(), and waits for confirmation using tx.wait(). The receipt is checked for success (status === 1) and the contract address is extracted from receipt.contractAddress. Results are displayed in real-time with status badges and summarized at the end.

WHAT IT CANNOT SEE

This tool cannot deploy to mainnet—only testnets are supported. It cannot deploy contracts with complex constructors or dependencies without manual gas adjustment—you may need to increase the gas limit for complex deployments. It cannot verify contract deployment success on all chains if some fail—it reports each chain individually and continues to the next. It cannot handle non-EVM chains. It cannot automatically fund your wallet on each network—you must have sufficient testnet ETH on each chain. It cannot detect if a network is out of sync or if the RPC provider is rate-limiting. The tool is limited by the connected wallet's balance on each network and RPC provider availability.

PLEASE NOTE

Works exclusively on EVM-compatible testnets: Goerli (5), Sepolia (11155111), Polygon (137), Arbitrum (42161), and Optimism (10). Ethereum Mainnet and other non-testnet chains are not supported. Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported. A wallet connection is required to sign the deployment transactions. This is a free developer tool—use it for multi-chain testing and deployment, but always verify your contract bytecode and constructor arguments thoroughly before deploying. Gas costs are paid by the connected wallet and are not refundable.