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AgentUtility ETH Logs — Multi-Chain EVM Event Log Reader
x402
AgentUtility ETH Logs — Multi-Chain EVM Event Log Reader is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Fetches on-chain event logs (eth_getLogs) across multiple EVM chains including Base, Ethereum, Arbitrum, Optimism, Polygon, and BSC, supporting address filtering, topic filters with OR arrays, and block range queries.
Price / call$0.01
Success—
StatusUnknown
How this service works
eth_getLogs / on-chain event logs / EVM event reader / Transfer event scan / ERC20 Transfer logs / NFT mint logs / DEX swap events / multi-chain log scanner / log indexer / smart contract event reader. Generic eth_getLogs across Base / Ethereum / Arbitrum / Optimism / Polygon / BSC via public no-auth RPC. Supports address + up to 4 topics (with OR arrays), from/to block range, and a 'last_n_blocks' convenience param. Hard-capped at 5,000 logs and 10,000-block range per call.
Output
Returns an array of up to 5,000 raw EVM event log objects, each containing the contract address, transaction hash, block number, log index, topics array (up to 4 topics), and hex-encoded data field. Results are scoped to the specified chain and capped at a 10,000-block range per call.
Example use cases
Track NFT mints on Base
“Give me all the mint (Transfer from 0x0) logs for the NFT contract 0x1234abcd... on Base for the last 5000 blocks so I can see who minted recently.”
Monitor DEX swap events on Arbitrum
“Fetch the last 1000 Swap event logs from the Uniswap V3 pool at 0xC31E54c7a869B9FcBEcc14363CF510d1c41fa443 on Arbitrum — I want to see recent trading activity.”
Audit ERC20 transfers to a wallet on Polygon
“Scan the last 3000 blocks on Polygon for any ERC20 Transfer events going to my wallet 0xAbCd1234... — I need to verify all incoming token transfers.”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/eth-logsWhen to prefer
Choose this endpoint when you need raw on-chain event logs from EVM-compatible chains without setting up your own RPC infrastructure or API keys. It's ideal for agents that need quick, pay-per-call access to Transfer events, DEX swaps, NFT mints, or any smart contract event across Base, Ethereum, Arbitrum, Optimism, Polygon, or BSC. Prefer this over a dedicated indexer (e.g. The Graph) when you need real-time or recent logs without a pre-built subgraph, and over a full node when you want zero-setup multi-chain coverage at $0.01/call.
Side effects
- Block range exceeds 10,000-block hard cap — returns error requiring smaller range
- Result set exceeds 5,000 logs — returns error or truncated results requiring narrower filter
- Invalid contract address format — returns RPC-level error
- Unsupported chain identifier — returns validation error
- RPC node unavailability for a specific chain — returns upstream timeout or error
- Invalid topic hash format — returns filter error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"logs": [
{
"data": "0x...",
"topics": [
"0xddf252ad...",
"0x000000000000000000000000abc...",
"0x000000000000000000000000def..."
],
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"log_index": 42,
"block_number": 19088225,
"transaction_hash": "0xfeed..."
}
],
"chain": "base",
"count": 100,
"chain_id": 8453,
"to_block": "0x1234564",
"truncated": false,
"from_block": "0x1234500",
"total_count": 100
}
}Tags
x402
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