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ARYSPHERE eth_getBlockByNumber – Ethereum Block Lookup
x402
ARYSPHERE eth_getBlockByNumber – Ethereum Block Lookup is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-17).
Fetches a full Ethereum mainnet block by number (or 'latest'), returning all block header fields and metadata, paid per call via x402 USDC on Base.
Price / call$0.003
Success—
StatusUnknown
How this service works
ARYSPHERE sells AI-written verdicts on Base token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base over x402 v2. No account and no API key.
Output
Returns a JSON object with ok:true, the chain name ('ethereum'), the RPC method name, and a full block object including hash, number, miner, nonce, gasUsed, gasLimit, timestamp, baseFeePerGas, stateRoot, parentHash, transactionsRoot, receiptsRoot, logsBloom, blobGasUsed, excessBlobGas, withdrawalsRoot, and more. No transactions list is returned by default (consistent with eth_getBlockByNumber false behavior).
Example use cases
Verify block timestamp for audit
“I need to confirm exactly when Ethereum block 0x18f1ab8 was mined — can you pull the block and give me the timestamp and miner address?”
Monitor latest Ethereum block activity
“Grab the latest Ethereum block for me and tell me the gas used, gas limit, and how full the block was.”
Investigate specific block's base fee
“What was the base fee per gas for Ethereum block 26,130,000? I'm trying to track gas price history around that point.”
Technical details
Endpoint
GEThttps://api.arysphere.com/v1/ventures/x402_chain_reads_v1/eth_getblockbynumber?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need full Ethereum mainnet block header metadata (miner, gas, timestamp, hashes) for a specific block number or the latest block, and you want a pay-per-call model with no API key or account setup. Prefer this over signing up for Alchemy/Infura when you need occasional lookups billed in USDC on Base via x402.
Side effects
- Invalid or out-of-range block number returns an error or null result
- Malformed block parameter (not hex or 'latest') may return a parse error
- Payment failure via x402 will prevent the call from completing
- Upstream RPC node unavailability may result in timeout or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"chain": "ethereum",
"method": "eth_getBlockByNumber",
"result": {
"hash": "0x7538fe3a3bb34856c428edf3a6987a3f65c62e420473a509e0ef6e6446aac74b",
"size": "0x1d1af",
"miner": "0x4838b106fce9647bdf1e7877bf73ce8b0bad5f97",
"nonce": "0x0000000000000000",
"number": "0x18f1ab8",
"uncles": [],
"gasUsed": "0x169e64a",
"mixHash": "0xae6149f7ce26ec6622dcee60ac3581ec58f376c6e617344d5d26fa6c79fcd84f",
"gasLimit": "0x3938700",
"extraData": "0x546974616e2028746974616e6275696c6465722e78797a29",
"logsBloom": "0x51ef0f6b5db85bb77c3f1b4de1e5dfafd5fedf65f45c753c161735b56e9beff5dc2cc73aa3bc2fafb97e7b917abf7dddc76b513d9f67ef73dfff2ff2bfefe4db7379d7e11ef186fae93b772fb47b47ffeee47771edfe1bba7176649acf657edef630646aa6ce2a61faf7faf32e606cc7dbffc2be70d6b6",
"stateRoot": "0xafc5c4791f953764c1240c4605600bffa650467910ff793a6ad44a44ec5bcdad",
"timestamp": "0x6ac905e3",
"difficulty": "0x0",
"parentHash": "0x49c6e74104654981bc3d21e12e9df6dcb4fad59c775948d9c43ecc662dbbeebe",
"sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"blobGasUsed": "0x140000",
"receiptsRoot": "0xd4d60719e4ba28f68eb398a5d861d44bfdb8a171742a756e0dbcc50250136183",
"requestsHash": "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"baseFeePerGas": "0x206e2cc9",
"excessBlobGas": "0xc0db577",
"withdrawalsRoot": "0x58b153ac66ecab07f3a899101e5e839985a01f22419ae16886f5321840808584",
"transactionsRoot": "0xc00956eb9e6da8da2db4d3a68333bf790f6fb92471b67121666f3a739a0b9e6c",
"parentBeaconBlockRoot": "0x0a477cb0499fc7f2a7d288b176f58f017ce1fc816648df3df102066289a3a962"
},
"service": "x402_chain_reads_v1.eth_getblockbynumber"
}
}Tags
x402
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