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Saylor Innovations Data Desk: Block at Time
x402
Saylor Innovations Data Desk: Block at Time is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Returns the EVM block mined at or before a given timestamp on 16 supported chains, along with the gap in seconds, the next block number, and the chain's block interval.
Price / call$0.01
Success—
StatusUnknown
How this service works
Find the block mined at or before any date or unix time on 16 EVM chains, with the gap in seconds, the next block and the chain's block interval.
Output
A JSON object containing the chain name and chain ID, the requested time in UTC, the resolved block number (last block at or before the requested time), the exact block timestamp in UTC, the gap in seconds between the block and the requested time, the next block number, the current chain tip, a plain-language note summarizing the result, the data source used, and the number of node requests made.
Example use cases
Historical snapshot for DeFi audit
“What block was Base chain at on 2024-06-01T00:00:00Z? I need the block number, when exactly that block was mined, and the next block number so I can query on-chain state at that point.”
Cross-chain event correlation
“I need to find the closest block on both Arbitrum and Optimism to unix timestamp 1704067200 — can you look up the block number, the exact block time, and how many seconds off it was from my timestamp for each chain?”
Smart contract deployment window check
“On Polygon, what was the block number just before 2023-11-15T09:30:00Z? I want to know the block time, the gap in seconds, and the next block number to bracket the deployment window.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/chain/block-at-time?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve a human-readable date or unix timestamp to an exact EVM block number on any of the 16 supported chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche, Gnosis, Linea, Scroll, Mantle, Blast, Sonic, Celo, Berachain, Unichain). It is ideal for historical data queries, on-chain state lookups at a specific point in time, or correlating off-chain events with on-chain activity. Prefer it over manual binary search or RPC calls when you want a single API call that handles the bisection logic and returns contextual metadata like gap seconds and next block.
Side effects
- Unsupported chain name or chain ID returns an error
- Timestamp in an unrecognized format may be rejected
- Timestamp far in the future beyond the chain tip cannot be resolved
- Network or node errors may cause lookup failures
- Malformed query parameters return a 4xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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