The faucet is a web application with the goal of distributing small amounts of Ether in private and test networks.

• Configure the funding account using a private key or keystore
• Implement CAPTCHA verification to prevent abuse
• Rate-limit requests by ETH address and IP address to prevent spam
• Prevent X-Forwarded-For spoofing by specifying the number of reverse proxies

• Go (version 1.17 or later)
• Node.js

1. Clone the repository and navigate to the app’s directory

git clone https://github.com/chainflag/eth-faucet.git
cd eth-faucet

2. Bundle frontend with Vite

go generate

3. Build Go project

go build -o eth-faucet

Use a private key

./eth-faucet -httpport 8080 -wallet.provider http://localhost:8545 -wallet.privkey privkey

Use a keystore

./eth-faucet -httpport 8080 -wallet.provider http://localhost:8545 -wallet.keyjson keystore -wallet.keypass password.txt

You can configure the funding account by using environment variables instead of command-line flags:

export WEB3_PROVIDER=rpc_endpoint
export PRIVATE_KEY=hex_private_key

or

export WEB3_PROVIDER=rpc_endpoint
export KEYSTORE=keystore_path
echo "your_keystore_password" > `pwd`/password.txt

Then run the faucet application without the wallet command-line flags:

./eth-faucet -httpport 8080

Optional Flags

The following are the available command-line flags(excluding above wallet flags):

docker run -d -p 8080:8080 -e WEB3_PROVIDER=rpc_endpoint -e PRIVATE_KEY=hex_private_key chainflag/eth-faucet:1.2.0

or

docker run -d -p 8080:8080 -e WEB3_PROVIDER=rpc_endpoint -e KEYSTORE=keystore_path -v `pwd`/keystore:/app/keystore -v `pwd`/password.txt:/app/password.txt chainflag/eth-faucet:1.2.0

Distributed under the MIT License. See LICENSE for more information.