Try a check

Ask the chain a question and get a block-pinned answer. Free samples below, or run any contract for $0.01, paid with your own wallet. You're only charged if the check finishes.

Free samples

Real checks on fixed examples. No wallet needed.

Check any contract · $0.01

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Chain Look back

Address

USDC on Base · one signature, no gas · for agents

We check your input first; bad input is refused before any payment.
Your wallet asks you to sign a 0.01 USDC payment authorisation on Base (valid 5 minutes). It's a signature, not a transaction.
The check runs; only if it finishes is the 0.01 USDC collected, and you get the answer with the payment tx.

Full answer (JSON)

Need it every week, written up for your holders? Weekly checks from $10 a week · @holdembuilds. Blockpin describes what contracts do; it is not a safety rating or financial advice.