What is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call with no parameters — the fastest way to test an x402 payment loop end to end.

Did this Base contract change since I last checked? Detect a silent proxy upgrade, admin takeover, bytecode swap or a newly paused contract — the classic rug-pull-after-audit pattern — by comparing its current state with Tereno's previous observation.

Is this Base contract safe to interact with? Detect whether an address has no code, is an upgradeable proxy, or is currently paused, and get a bounded allow, review or block trust verdict with evidence and block freshness before you call it.

What standard does this Base contract implement? Detect ERC-20, ERC-721, ERC-1155 and ERC-165 support plus EIP-1967 proxy control slots in one cheap bounded check, cached and shared across agents.

What token is this? Read a Base token's name, symbol, decimals and total supply in one cheap typed call — cached and shared across agents, with block-level freshness and explicit limitations.

Is this transaction safe to sign? Before signing on Base, know what it actually does: classify swap, approval, transfer or contract-call intent, simulate it, estimate gas, see which balances and allowances change, and flag a scam or unlimited approval that could drain your wallet, or a manipulated target, before you sign.