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Agent402 Block Info
x402
Agent402 Block Info is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Fetches on-chain block metadata (hash, number, gas, timestamp, tx count) for a given block on Ethereum-compatible networks
Price / call$0.001
Success—
StatusUnknown
How this service works
Header-level detail for one block on Ethereum, Base, Polygon, Arbitrum, or Optimism: hash, timestamp (unix + ISO), transaction count, gas used/limit, base fee. Pass a block number, 0x hex, or "latest". Keyless multi-endpoint failover. ?block=latest&network=base
Output
Returns a JSON object with the block hash, block number, gas used, gas limit, transaction count, base fee per gas (in wei), Unix timestamp, ISO 8601 timestamp, and the network name for the requested block.
Example use cases
Monitor real-time Base chain activity
“What does the latest block on Base look like right now — block number, how many transactions, gas used, and the timestamp?”
Audit historical Ethereum block gas fees
“Can you look up block 20000000 on Ethereum and tell me the base fee per gas, gas used, gas limit, and when it was mined?”
Cross-chain block comparison for DeFi research
“Fetch the current latest block details from both Polygon and Arbitrum — I want to compare their gas limits and base fees side by side.”
Technical details
Endpoint
GEThttps://agent402.tools/api/block-infoWhen to prefer
Use this endpoint when you need lightweight, pay-per-call block metadata from EVM-compatible chains without setting up RPC infrastructure, managing API keys, or signing up for a service. Ideal for agents that need occasional block lookups across multiple chains (Base, Ethereum, Polygon, Arbitrum, Optimism) with micro-payments via USDC on Base or other supported chains. Prefer this over self-managed RPC nodes when simplicity, multi-chain coverage, and zero-signup access matter more than bulk throughput.
Side effects
- Invalid block number format returns an error (must be decimal, 0x hex, or 'latest')
- Unsupported network name returns an error (only ethereum, base, polygon, arbitrum, optimism accepted)
- Network RPC unavailable may return a timeout or upstream error
- Block number higher than current chain head returns not-found or error
- Payment failure (insufficient USDC balance or unsupported chain) results in HTTP 402 with payment details
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"hash": "0x…",
"number": 27000000,
"gasUsed": "8123456",
"network": "base",
"txCount": 142,
"gasLimit": "180000000",
"timestamp": 1753747200,
"timestampIso": "2026-07-29T00:00:00.000Z",
"baseFeePerGas": "4100000"
}
}Tags
x402
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