Prerequisites (wallet, Base testnet ETH, tools)

Before you start integrating IFÁ Labs price feeds, ensure you have the basic tools and setup ready. This guide covers everything needed to interact with our onchain oracle contracts on Base.

1. Wallet

You need a compatible Ethereum wallet to sign transactions and interact with Base.

• Recommended: MetaMask (browser extension or mobile app).

• Alternatives: Coinbase Wallet, WalletConnect-compatible wallets.

Setup Steps:

1. Install MetaMask from metamask.io.

2. Create or import a wallet.

3. Add the Base network (see Network Information below).

2. Testnet ETH

For testing on Base Sepolia, you'll need testnet ETH (no real value).

Official Base Sepolia Faucet:

• Visit: https://www.base.org/faucet (or search for "Base Sepolia faucet").

• Connect your wallet and request tokens (daily limits apply).

Alternative faucets:

• Alchemy Base Faucet (requires account).

• Third-party options like QuickNode or Infura faucets.

Note: Mainnet interactions require real ETH on Base.

3. Development Tools

Choose one or more based on your workflow:

Tool	Best For	Installation/Command
Remix IDE	Quick prototyping (browser-based)	Visit remix.ethereum.org
Foundry	Fast, Rust-based testing/deploy	`curl -L https://foundry.paradigm.xyz
Hardhat	JavaScript/TypeScript projects	npm init -y && npm install --save-dev hardhat
Ethers.js / viem	Frontend or script interactions	npm install ethers or npm install viem

Recommended Interface Package: Install the official IFÁ Labs interface for type-safe development:

npm install ifapricefeed-interface

Network Information

Add Base networks to your wallet:

Network	RPC URL	Chain ID	Currency	Block Explorer
Base Mainnet	https://mainnet.base.org	8453	ETH	https://basescan.org
Base Sepolia	https://sepolia.base.org	84532	ETH	https://sepolia.basescan.org

MetaMask can auto-add these via ChainList.org.

Once set up, you're ready to fetch your first price!

Next: Learn to Get Your First Price (On-chain)