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Block Header Info — Base, Ethereum, Arbitrum, Optimism, Polygon
x402
Block Header Info — Base, Ethereum, Arbitrum, Optimism, Polygon is a paid API for AI agents from biosfera.46-62-215-147.sslip.io, paid per call via x402, $0.001/call, status down (last checked 2026-10-02).
Returns block header details (hash, parent hash, timestamp, transaction count, gas used/limit, base fee, miner, size) for a given block number or 'latest' on five EVM chains.
Price / call$0.001
Success—
StatusDown
How this service works
Use when you need a block header on Base, Ethereum, Arbitrum, Optimism or Polygon: pass a block number or 'latest'. Returns hash, parent, timestamp, transaction count, gas used and limit, base fee, miner and size. Read-only public data.
Output
Returns a JSON object with the block's hash, parent hash, timestamp (Unix), transaction count, gas used, gas limit, base fee per gas, miner address, and block size for the specified chain and block number or 'latest'.
Example use cases
Monitor current gas conditions on Base
“What's the base fee and gas limit for the latest block on Base right now?”
Audit historical block on Arbitrum
“Pull the block header for block 150000000 on Arbitrum — I need the miner, timestamp, and transaction count.”
Track Polygon block progression
“Give me the hash and parent hash of the latest block on Polygon so I can verify chain continuity.”
Technical details
Endpoint
GEThttps://biosfera.46-62-215-147.sslip.io/o/block-info?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need raw EVM block header metadata (hash, miner, gas, base fee, timestamp, size) for any of the five supported chains (Base, Ethereum, Arbitrum, Optimism, Polygon) by block number or 'latest', and do not need full transaction data or receipts. Ideal for monitoring chain activity, verifying block progression, auditing gas conditions, or enriching on-chain analytics pipelines.
Side effects
- Invalid or out-of-range block number returns an error or empty result
- Unsupported chain value (not one of: base, ethereum, arbitrum, optimism, polygon) returns a validation error
- Block number in the future returns not-found or error
- Network or RPC connectivity issues for a specific chain may cause timeouts
- Malformed 'block' parameter (not matching pattern ^(latest|[0-9]{1,12})$) returns a schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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