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EVM Block Number Lookup — Base, Ethereum, Arbitrum
x402
EVM Block Number Lookup — Base, Ethereum, Arbitrum is a paid API for AI agents from ai-data-marketplace-1042299154756.us-central1.run.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Returns the current latest block number for a specified EVM chain (Base, Ethereum, or Arbitrum), including decimal and hex representations.
Price / call$0.001
Success—
StatusUnknown
How this service works
Read the current block height directly from a supported Base, Ethereum, or Arbitrum public JSON-RPC provider.
Output
A JSON object containing: success (boolean), network (chain name string), chain_id (integer), block_number (latest block as a decimal string), and block_number_hex (latest block in hexadecimal). Example: {"network":"base","success":true,"chain_id":8453,"block_number":"33752215","block_number_hex":"0x2030877"}.
Example use cases
Real-time block height monitoring
“Keep checking the current block number on Base and let me know when it passes block 34000000.”
Cross-chain block sync comparison
“Fetch the latest block numbers for Base, Ethereum, and Arbitrum so I can compare how far along each chain is right now.”
On-chain timestamp anchoring
“I need the current Ethereum block number to use as a reference point for a smart contract deployment — what block are we at?”
Technical details
Endpoint
GEThttps://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_block_numberWhen to prefer
Choose this endpoint when you need a quick, real-time block number lookup for Base, Ethereum, or Arbitrum without setting up your own RPC node. It's ideal for agents that need to anchor events to block heights, verify chain progress, or synchronize on-chain logic. At $0.001 USDC per call via x402, it's cost-effective for sporadic or automated polling use cases.
Side effects
- Unsupported chain name returns an error or defaults to Base
- Network timeout if the RPC provider is temporarily unavailable
- Missing or malformed query param may cause a 400 or default behavior
- Rate limiting or payment failure (x402) returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "base",
"success": true,
"chain_id": 8453,
"block_number": "33752215",
"block_number_hex": "0x2030877"
}
}Tags
x402
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