{"slug":"api-x402node-dev-contract-source-ada55c","title":"Verified contract metadata by address and chain","host":"api.x402node.dev","method":"GET","resource":"https://api.x402node.dev/contract/source","category":"market","description":"Verified contract metadata by address and chain: contract name, compiler version, optimization, license, and proxy with implementation address, from a block explorer behind an API key. Does not return full source. contract source, verified contract, compiler version, proxy implementation, contract m","price_listed":0.015,"price_asked":0.015,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":504,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"string","chain":"string"},"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":{"address":{"description":"contract 0x...","type":"string"},"chain":{"description":"default ethereum","type":"string"}},"required":["address"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-10","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.015,"price_match":true,"latency_ms":504,"error":null}],"description_full":"Verified contract metadata by address and chain: contract name, compiler version, optimization, license, and proxy with implementation address, from a block explorer behind an API key. Does not return full source. contract source, verified contract, compiler version, proxy implementation, contract metadata Accepts payment on Base or Solana — either network works.","last_updated":"2026-10-04T15:22:36.341Z","schemes":["exact"]}