BaseLens

Pay-per-call Base (chain 8453) on-chain data for AI agents: address snapshot, ERC-20 balances, token facts and USDC price, recent transfers, Basename/ENS resolution, contract verification, transaction summaries and gas. x402 USDC micropayments, no API key.

Skills

• /v1/address
  Base (chain 8453) address snapshot: EOA vs contract vs EIP-7702, ETH balance, nonce, code size and native USDC balance, at the latest block. Price $0.002 USDC.
  baseonchainwalletbalanceeoacontractusdc
• /v1/erc20-balance
  ERC-20 balance of any address for any token on Base, with symbol and decimals already applied (raw and human-readable). Price $0.002 USDC.
  baseerc20tokenbalanceonchain
• /v1/token
  Token facts on Base: name, symbol, decimals, total supply, contract code size, owner() and EIP-1967 proxy implementation, plus plain-language notes (upgradeable? owner renounced?). Read-only facts, not advice. Price $0.003 USDC.
  basetokenerc20metadataproxyownerdue-diligence
• /v1/tx
  Human-readable summary of a Base transaction: status, block time, from/to, value, total fee (incl. L1 fee), and decoded ERC-20 Transfer events with token symbols and amounts. Handy to verify a payment landed. Price $0.003 USDC.
  basetransactionreceipterc20transfersfeeverify-payment
• /v1/gas
  Current Base gas: base fee, gas price, suggested EIP-1559 max fee and priority fee (gwei), block fullness, and cost of a plain ETH transfer. Price $0.001 USDC.
  basegasfeeseip1559
• /v1/name
  Resolve a Basename (name.base.eth) or ENS name to its Base/Ethereum address, or reverse-resolve an address to its primary ENS/Basename. Includes avatar record. Price $0.001 USDC.
  basebasenameensresolveidentityreverse-lookup
• /v1/price
  On-chain USDC price of any Base ERC-20: executable Uniswap v3 quote for 1 whole token (direct USDC pool or via WETH, best fee tier). No third-party price API. Price $0.003 USDC.
  basepricetokenusdcuniswapquotedefi
• /v1/transfers
  Recent ERC-20 transfers in and out of an address on Base for up to 5 tokens (default USDC), newest first, over the last ~10k blocks (max 30k). Check incoming payments or wallet activity. Price $0.004 USDC.
  basetransfershistoryerc20usdcpaymentsactivity
• /v1/contract
  Contract check on Base: is it a contract, code size, owner(), proxy implementation, and whether the source (and implementation) is verified on Sourcify, plus plain-language notes. Not an audit. Price $0.003 USDC.
  basecontractverified-sourcesourcifyproxysecuritydue-diligence

How to call

https://baselens-api.vercel.app/a2a

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