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
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 203 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 7 (directory's own records)
- Paid calls, last 30 days
- 9
- Category
- Blockchain reads
- Address
- https://agent402.tools/api/block-number
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/dcca8b6cd4ef.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).