{"slug":"x402-ottoai-services-tx-explainer-5dadfe","title":"Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethere","host":"x402.ottoai.services","method":"POST","resource":"https://x402.ottoai.services/tx-explainer","category":"market","description":"Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.","price_listed":0.01,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":5,"reported_payers_30d":3,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"chain":"base","outputLevel":"summary","txHash":"0x91985d4134da826cd05ee7e629b68f0d3ebbbe14198c7d98a4f9e50c1ff46041"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"chain":{"description":"Blockchain network (default: base). 11 EVM chains supported.","enum":["base","ethereum","arbitrum","optimism","avalanche","polygon","mantle","monad","plasma","bsc","hyperliquid"],"type":"string"},"outputLevel":{"description":"'summary' = one-liner, 'detailed' = full breakdown","enum":["summary","detailed"],"type":"string"},"txHash":{"description":"Transaction hash (0x-prefixed, 64 hex characters)","pattern":"^0x[a-fA-F0-9]{64}$","type":"string"}},"required":["txHash"],"type":"object"},"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":{"chain":{"description":"Blockchain name","type":"string"},"details":{"description":"Structured decode — from, to, value, method, selector, signature, pattern, events (always included; interpretation prose only when outputLevel=detailed)","type":"object"},"error":{"description":"Error message if failed","type":"string"},"explorerUrl":{"description":"Link to block explorer","type":"string"},"status":{"enum":["success","failed"],"type":"string"},"summary":{"description":"Human-readable transaction summary","type":"string"},"txHash":{"description":"Transaction hash","type":"string"}},"required":["status"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.","last_updated":"2026-09-03T13:42:04.276Z","schemes":["exact"]}