{"slug":"agent402-tools-api-event-logs-3970f5","title":"Fetch contract event logs (eth_getLogs) on Ethereum, Base, Polygon, Arbitrum, or","host":"agent402.tools","method":"POST","resource":"https://agent402.tools/api/event-logs","category":"market","description":"Fetch contract event logs (eth_getLogs) on Ethereum, Base, Polygon, Arbitrum, or Optimism - bounded so it always answers: block range capped at 2000 blocks (default: the last 100, auto-narrowed for busy contracts), at most 200 logs returned (truncated flag set if more matched). Filter by contract ad","price_listed":0.003,"price_asked":0.003,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":944,"reported_calls_30d":5,"reported_payers_30d":1,"networks":["algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=","eip155:10","eip155:1329","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:43114","eip155:4663","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","network":"base","topic0":"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"address":{"description":"Contract address to read logs from (0x…).","type":"string"},"fromBlock":{"description":"Start block (decimal or 0x hex). Default: toBlock - 100.","type":"string"},"network":{"description":"ethereum / base / polygon / arbitrum / optimism (default base).","type":"string"},"toBlock":{"description":"End block (decimal, 0x hex, or \"latest\"). Default latest.","type":"string"},"topic0":{"description":"Optional event signature hash (32-byte 0x hex), e.g. the ERC-20 Transfer topic.","type":"string"}},"required":["address"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"address":{"type":"string"},"count":{"type":"integer"},"fromBlock":{"type":"integer"},"logs":{"items":{"properties":{"blockNumber":{"type":"integer"},"data":{"type":"string"},"topics":{"items":{"type":"string"},"type":"array"},"txHash":{"type":"string"}},"type":"object"},"type":"array"},"network":{"type":"string"},"toBlock":{"type":"integer"},"truncated":{"type":"boolean"}},"required":["network","address","fromBlock","toBlock","count","truncated","logs"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.003,"price_match":true,"latency_ms":944,"error":null}],"description_full":"Fetch contract event logs (eth_getLogs) on Ethereum, Base, Polygon, Arbitrum, or Optimism - bounded so it always answers: block range capped at 2000 blocks (default: the last 100, auto-narrowed for busy contracts), at most 200 logs returned (truncated flag set if more matched). Filter by contract address and optional topic0 (event signature hash). Keyless multi-endpoint failover.","last_updated":"2026-09-22T11:47:19.565Z","schemes":["exact","upto"]}