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Ethereum Mainnet eth_getLogs (Event Logs Reader)
x402
Ethereum Mainnet eth_getLogs (Event Logs Reader) 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 raw event logs from an Ethereum mainnet smart contract, filtered by event topic and block range.
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
A JSON object containing an array of raw event log entries, each with fields including address, topics, data, blockNumber, blockHash, transactionHash, transactionIndex, logIndex, blockTimestamp, and removed flag. Also includes metadata: total count, from_block, to_block, truncated flag, chain, and method name.
Example use cases
Monitor ERC-20 token transfer activity
“Fetch me the last 50 blocks of Transfer event logs from the USDC contract on Ethereum mainnet at 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48, using topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.”
Debug a smart contract deployment
“I just deployed a contract on Ethereum mainnet at 0x1234567890abcdef1234567890abcdef12345678 — can you grab all event logs from the last 10 blocks so I can verify it's emitting events correctly?”
Track DeFi protocol swap events
“Get me the last 30 blocks of Swap event logs from the Uniswap V3 pool at 0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640 on Ethereum mainnet, filtering by the Swap topic0 hash 0xc42079f94a6350d7e6235f29174924f928cc2ac818eb64fed8004e115fbcca67.”
Technical details
Endpoint
GEThttps://api.arysphere.com/v1/ventures/x402_eth_reads_v1/eth_mainnet_eth_getlogs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to read raw smart contract event logs from Ethereum mainnet using eth_getLogs, particularly when you want to filter by a specific event signature (topic0) and limit the range to the most recent N blocks. Prefer it over Base or Gnosis siblings when your contract is deployed on Ethereum mainnet. It is well-suited for monitoring ERC-20 transfers, DEX swaps, or any EVM event without needing to decode or index the data yourself.
Side effects
- Invalid contract address format (not 0x + 40 hex) returns a validation error
- Invalid topic0 hash format (not 0x + 64 hex) returns a validation error
- Block range out of bounds (N < 1 or N > 100) returns a validation error
- No logs found for the given filters returns an empty logs array
- RPC node timeout or Ethereum mainnet connectivity issue returns a 5xx error
- Payment failure or insufficient USDC balance returns a 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"chain": "ethereum",
"method": "eth_getLogs",
"result": {
"logs": [
{
"data": "0x0000000000000000000000000000000000000000000000000000000011000a58",
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000bdb3ba9ffe392549e1f8658dd2630c141fdf47b6"
],
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"removed": false,
"logIndex": "0x17",
"blockHash": "0xf88c7d6da7b73bdf869dac8661602de3f98f208d7eb052a1073edd6e5041a363",
"blockNumber": "0x18ff029",
"blockTimestamp": "0x6ad30f1b",
"transactionHash": "0x4c1a6d22ae7677c3c500e5ad82827193dbc4aaf488a6af3c3e7c8ce5e04334a0",
"transactionIndex": "0x2"
},
{
"data": "0x0000000000000000000000000000000000000000000000000000000002faf080",
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000924e1b33b1fc3041351b2082ddd11d5c8bcca370"
],
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"removed": false,
"logIndex": "0x39",
"blockHash": "0xf88c7d6da7b73bdf869dac8661602de3f98f208d7eb052a1073edd6e5041a363",
"blockNumber": "0x18ff029",
"blockTimestamp": "0x6ad30f1b",
"transactionHash": "0x6cb83f77e12d2b4be5980a47bcfd0f3a24a3743cbc49775a323172f539610a5f",
"transactionIndex": "0x8"
}
],
"count": 1394,
"to_block": 26210354,
"truncated": true,
"from_block": 26210345
},
"service": "x402_eth_reads_v1.eth_mainnet_eth_getlogs"
}
}Tags
x402
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