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ETH Mainnet ETH Blocknumber
x402
ETH Mainnet ETH Blocknumber is a paid API for AI agents from ari001.tailb4ac3a.ts.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).
Returns the latest Ethereum mainnet block number via the eth_blockNumber RPC method.
Price / call$0.003
Success—
StatusUnknown
How this service works
Returns the latest Ethereum mainnet block number via eth_blockNumber. Takes no parameters. Base RPC read of an address, block or transaction.
Output
Returns the current Ethereum mainnet block number, typically as a hex string (e.g. '0x12A05F2'), representing the height of the latest confirmed block on the Ethereum mainnet chain.
Example use cases
Blockchain sync status check
“Can you tell me what block Ethereum mainnet is currently on so I can check if my node is synced?”
Polling ETH block height in automation
“Every 30 seconds, fetch the latest Ethereum block number and alert me when it advances by more than 5 blocks.”
Timestamping events by block
“What is the current Ethereum mainnet block number? I need it to record the block height at which I'm executing this transaction.”
Technical details
Endpoint
GEThttps://ari001.tailb4ac3a.ts.net/v1/ventures/x402_eth_reads_v1/eth_mainnet_eth_blocknumber?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, cheap, single-purpose lookup of the current Ethereum mainnet block number without constructing a full RPC call yourself. Ideal for agents that need to timestamp events by block height, check chain tip progression, or verify node sync status. Prefer this over a full Ethereum node RPC client when you want a pay-per-use, no-infrastructure approach.
Side effects
- Upstream Ethereum RPC node unavailable — returns 5xx error
- Payment not processed correctly — returns 402 Payment Required
- Block number temporarily stale if upstream node is lagging
- Network timeout if the backing RPC is slow to respond
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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