Skip to main content

Scaffold-ETH x Buildbear

Scaffold-Eth x Buildbear lets you create your own private testnet, (optional) forked from the mainnet, with your own native token and ERC20 Token faucet and blockchain explorer

🐻 Features of Scaffold-ETH x Buildbear​

Creating your private testnet​


Using your personal native token faucet​


Using your personal ERC20 faucet​


Swap your tokens on Forked Uniswap​


πŸ„β€β™‚οΈ Quick Start​

Prerequisites: Node (v18 LTS) plus Yarn (v1.x) and Git

🚨 If you are using a version < v18 you will need to remove openssl-legacy-provider from the start script in package.json

1️⃣ clone/fork πŸ— scaffold-eth x buildbear:​

git clone

2️⃣ install and create your private testnet (forked from the mainnet):​

cd scaffold-eth
yarn install
yarn fork-bb

3️⃣ πŸ›° deploy your SwapOnUniswap Contract:​

cd scaffold-eth
yarn deploy

4️⃣ start your πŸ“± frontend:​

🚨 if you have not created your private testnet please follow the the steps in point 2 above:

cd scaffold-eth
yarn start

5️⃣ you can use your 🚰 faucet directly from the terminal after creating your private tesnet:​

# for native tokens
yarn faucet-bb native <Insert Amount (optional)> <Insert Your Wallet Address>

# for erc20 tokens
yarn faucet-bb USDC <Insert Amount (optional)> <Insert Your Wallet Address>

# Please note the supported ERC20 tokens below

# by default faucet mints 100 native / erc20 tokens

Supported ERC20 tokens that can be used :​

  1. USDC
  2. USDT
  3. DAI
  4. BNB
  5. BUSD
  6. MATIC
  7. WBTC
  8. UNI
  9. AAVE

Please note the address for each ERC20 Tokens is automatically updated / changed based on the network that you have forked from

πŸ” Edit your smart contracts in packages/hardhat/contracts

πŸ“ Edit your frontend App.jsx in packages/react-app/src

πŸ’Ό Edit your deployment scripts in packages/hardhat/deploy

πŸ“± Open http://localhost:3000 to see the app

πŸ’¬ Support Chat

Join the telegram support chat πŸ’¬ or buidlguidl discord to ask questions and find others building with πŸ— scaffold-eth!