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Sepolia Testnet Faucet

The Sepolia token seller is a fixed-price contract that accepts Sepolia ETH and transfers VibeFi testnet tokens (VFI) to buyers.

This replaces a faucet-style flow with a simple onchain buy flow.

Browser Buy (wallet)

Use this if you want to connect a wallet and buy without running Foundry commands.

This interactive buyer requires a browser wallet (for example MetaMask).

Addresses​

Set these first:

export SEPOLIA_RPC_URL="<your-rpc-url>"
export VFI_TOKEN_ADDRESS="0xD11496882E083Ce67653eC655d14487030E548aC"
export TOKEN_SELLER_ADDRESS="0x93bb81a54d9Dd29b8e8037260aF93770c4F2A64E"

Buyer Flow (cast)​

Set your wallet key:

export BUYER_PK="<private-key>"
export BUYER_ADDRESS=$(cast wallet address --private-key "$BUYER_PK")

Check pricing:

cast call $TOKEN_SELLER_ADDRESS "tokensPerEth()(uint256)" --rpc-url $SEPOLIA_RPC_URL

Quote how many tokens you get for 0.01 ETH:

ETH_IN_WEI=$(cast to-wei 0.01 ether)
MIN_TOKENS_OUT=$(cast call $TOKEN_SELLER_ADDRESS "quoteTokenAmount(uint256)(uint256)" $ETH_IN_WEI --rpc-url $SEPOLIA_RPC_URL)
echo $MIN_TOKENS_OUT

Buy tokens:

cast send $TOKEN_SELLER_ADDRESS \
  "buy(address,uint256)" \
  $BUYER_ADDRESS \
  $MIN_TOKENS_OUT \
  --value 0.01ether \
  --private-key $BUYER_PK \
  --rpc-url $SEPOLIA_RPC_URL

Check your VFI balance:

cast call $VFI_TOKEN_ADDRESS "balanceOf(address)(uint256)" $BUYER_ADDRESS --rpc-url $SEPOLIA_RPC_URL

Owner Flow (fund + admin)​

Set your owner/deployer key:

export OWNER_ADDRESS=$(cast wallet address --mnemonic "$SEPOLIA_MNEMONIC")
export OWNER_PK=$(cast wallet private-key --mnemonic "$SEPOLIA_MNEMONIC")

Deploy a token seller:

cd contracts
export VFI_TOKEN_ADDRESS="<vfi-token-address>"
export SELLER_OWNER=$OWNER_ADDRESS

FOUNDRY_PROFILE=ci forge script script/DeployTokenSeller.s.sol:DeployTokenSeller \
  --rpc-url $SEPOLIA_RPC_URL \
  --broadcast -vvv

This script deploys with 10 VFI per 1 ETH and transfers 10,000 VFI from the deployer into seller inventory.

Capture the newly deployed seller address from the deploy output and re-export it before running admin commands:

# replace with the address printed by DeployTokenSeller
export TOKEN_SELLER_ADDRESS="<new-token-seller-address>"
echo $TOKEN_SELLER_ADDRESS

Do not keep using the shared address from the earlier Addresses section for owner/admin actions.

Fund seller inventory:

cast send $VFI_TOKEN_ADDRESS \
  "transfer(address,uint256)" \
  $TOKEN_SELLER_ADDRESS \
  $(cast to-wei 100000 ether) \
  --private-key $OWNER_PK \
  --rpc-url $SEPOLIA_RPC_URL

Update pricing:

cast send $TOKEN_SELLER_ADDRESS \
  "setTokensPerEth(uint256)" \
  $(cast to-wei 750 ether) \
  --private-key $OWNER_PK \
  --rpc-url $SEPOLIA_RPC_URL

Check unsold inventory and ETH collected:

cast call $TOKEN_SELLER_ADDRESS "tokensAvailable()(uint256)" --rpc-url $SEPOLIA_RPC_URL
cast balance $TOKEN_SELLER_ADDRESS --rpc-url $SEPOLIA_RPC_URL

Withdraw collected ETH:

cast send $TOKEN_SELLER_ADDRESS \
  "withdrawEth(address,uint256)" \
  $OWNER_ADDRESS \
  $(cast to-wei 0.1 ether) \
  --private-key $OWNER_PK \
  --rpc-url $SEPOLIA_RPC_URL

Withdraw unsold tokens:

cast send $TOKEN_SELLER_ADDRESS \
  "withdrawUnsoldTokens(address,uint256)" \
  $OWNER_ADDRESS \
  $(cast to-wei 5000 ether) \
  --private-key $OWNER_PK \
  --rpc-url $SEPOLIA_RPC_URL

Getting Sepolia ETH​

If you do not have enough Sepolia ETH to buy VFI testnet tokens, use testnetbridge to get ETH first.

If you do not want to do that, ask in the Telegram group and we can help directly.