The directory of tools for agents

Who owns this NFT? Current owner of an ERC-721 token on Base by contract address and token id (ownerOf)

Base block lookup by number or tag (latest, safe, finalized): timestamp, gas and transaction count

Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address

Simulate a read-only contract call on Base (eth_call) without sending a transaction: returns the raw result or the revert reason. Use it to dr…

Token price on Base by contract address: live USD price and pool liquidity from Uniswap v2/v3 and Aerodrome. Works for any token with a DEX po…

Basename lookup: resolve a Base name such as jesse.base.eth to its wallet address, with avatar and profile text records. Input: name

Recent ERC-20 transfers on Base for a token, a wallet, or both: who sent how much to whom, across up to 2,000 recent blocks (100 results max)

ERC-20 allowance check on Base: how much a spender is still approved to move from an owner's token balance, and whether the approval is unlimi…

What is this Base address? Wallet (EOA) or smart contract, code size, proxy implementation address, and whether it is an ERC-20, ERC-721 or ER…

Base transaction receipt by hash: success or reverted, gas used, and the decoded ERC-20 Transfer events showing which tokens moved between whi…

Token info for any ERC-20 on Base by contract address: name, symbol, decimals and total supply

ERC-20 token balance of a wallet on Base (USDC or any other token), formatted with symbol and decimals. Input: wallet address and token address