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Demand Factory Base Block Number
x402
Demand Factory Base Block Number is a paid API for AI agents from x402-market-seven.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).
Returns the current block number on the Base (EVM chain ID 8453) mainnet network, paid per call via x402.
Price / call$0.005
Success—
StatusUnknown
How this service works
Base mainnet data primitives paid per call with USDC over x402 v2.
Output
Returns a JSON object containing the network identifier (e.g. 'eip155:8453' for Base mainnet) and the current block number as an integer (e.g. 36000000), reflecting the latest mined block on Base at the time of the call.
Example use cases
Real-time block height monitoring
“Keep checking the current block number on Base mainnet every few seconds and alert me when it passes block 37 million.”
On-chain event synchronization
“Before syncing my records, can you grab the latest block number on Base so I can use it as a checkpoint?”
Blockchain data freshness check
“What block is Base mainnet at right now? I need to confirm whether my cached data from block 35,900,000 is still recent enough.”
Technical details
Endpoint
GEThttps://x402-market-seven.vercel.app/api/base/block-number?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call lookup of the current Base mainnet block number without managing your own RPC node or API key subscription. Ideal for agents that occasionally need the block height as a timestamp proxy, sync checkpoint, or freshness signal on Base (eip155:8453), and are already operating in an x402 micropayment context.
Side effects
- Payment failure or insufficient USDC balance causes 402 Payment Required response
- Network congestion on Base RPC may cause stale or delayed block number
- Invalid x402 payment header returns authentication/payment error
- Service unavailability on Vercel hosting returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"block_number": 36000000
}
}Tags
x402
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