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Xerxes Ethereum eth_getLogs — Contract Event Log Fetcher
x402
Xerxes Ethereum eth_getLogs — Contract Event Log Fetcher is a paid API for AI agents from ari001.tailb4ac3a.ts.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).
Fetches recent event logs emitted by an Ethereum contract address, optionally filtered by event signature hash and block range (last 1–100 blocks).
Price / call$0.005
Success—
StatusUnknown
How this service works
Returns logs emitted by a contract address, optionally filtered by topic0 (event signature hash) and limited to the last N blocks (1-100, default 10). Query parameters: address (contract, 0x + 40 hex), topic0 (optional event signature hash, 0x + 64 hex), blocks (optional, last N blocks, 1-100, default 10). Query: address (contract, 0x + 40 hex), topic0 (optional event signature hash, 0x + 64 hex), blocks (optional, last N blocks, 1-100 (default 10)).
Output
Returns a JSON object with ok (boolean), an array of up to 200 raw Ethereum event log entries (logs), the total count, the block range queried (from_block, to_block), and a truncated flag indicating if results were capped at 200.
Example use cases
Monitor ERC-20 Transfer activity
“Fetch the Transfer event logs for the USDT contract at 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum over the last 20 blocks — use the Transfer event signature hash 0xddf252ad1be2c89b69c2b068fc378daa952ba7f89c06af87647bcf8d3949be45.”
Audit DeFi protocol events
“Get all the logs emitted by the Uniswap V2 pair contract 0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc on Ethereum in the last 100 blocks so I can see recent Swap and Sync activity.”
Debug smart contract for unexpected events
“Check what events the contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum has emitted in the last 10 blocks — I want to see if there are any unexpected calls going through.”
Technical details
Endpoint
GEThttps://ari001.tailb4ac3a.ts.net/v1/ventures/ethereum_rpc_api/eth_getlogs?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to retrieve recent on-chain event logs from a specific Ethereum smart contract, especially when you want to filter by event type (topic0) and limit the query to a recent block window. It is ideal for monitoring contract activity, auditing DeFi protocol events, or reacting to on-chain state changes in near real-time. Prefer it over full archive node queries when recency (last 1–100 blocks) is sufficient.
Side effects
- Invalid contract address format returns an error (address must be 0x + 40 hex characters)
- Invalid topic0 format returns an error (must be 0x + 64 hex characters)
- Blocks parameter out of range (must be 1–100) may be rejected or defaulted
- Contract has emitted no events in the queried block range — returns empty logs array
- RPC node unavailable or timeout — ok: false with error message
- Logs exceed 200 entries — result is truncated, truncated flag set to true
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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