{"slug":"api-checkpoint402-com-v1-tx-explain-eabf16","title":"Explains any Base or Ethereum transaction in plain English","host":"api.checkpoint402.com","method":"GET","resource":"https://api.checkpoint402.com/v1/tx-explain","category":"market","description":"Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee — plus the structured decoded data.","price_listed":0.03,"price_asked":0.03,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":1515,"reported_calls_30d":3,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"chain":"base","hash":"0xcbb626797fd53a67c9342c1541bc5e56a447b77a3efe490b5d7b2876be3b7205"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"chain":{"description":"Chain (default base)","enum":["base","ethereum"],"type":"string"},"hash":{"description":"Transaction hash (0x + 64 hex chars)","type":"string"}},"required":["hash"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-18","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.03,"price_match":true,"latency_ms":1515,"error":null}],"description_full":"Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee — plus the structured decoded data.","last_updated":"2026-10-18T06:19:38.005Z","schemes":["exact"]}