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Latest block number

The latest block number on Ethereum, Base, Polygon, Arbitrum or Optimism from keyless public nodes with fallback. Use it as the cheapest possible on-chain read: a liveness check for a chain, a timestamp anchor for a query, or the first paid call to prove an x402 client works end to end.

Resource URL

https://agent402.tools/api/block-number

Payment options

exactSolana

$0.001 USDC

Max amount

Pay to
J7aN3PLJnTCF5qpEnvJHJsnCjcGuqC2rYtEM8Gv3xwg
Timeout
300s

Tags

webtoolsagentsx402cryptoblocknumberlatestheight

For agents

Prompt snippet for AI agents

Find and pay for this x402 resource:
URL: https://agent402.tools/api/block-number
Type: http
Sources: cdp, thirdweb, payai

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