{"slug":"nbx4-dev-v1-report-8582ec","title":"Analyze a Base Mainnet token contract","host":"nbx4.dev","method":"GET","resource":"https://nbx4.dev/v1/report","category":"code","description":"Analyze a Base Mainnet token contract: block-pinned owner(), ERC-1967 proxy slots, ERC-20 metadata, code hash, best-effort source match and prior-snapshot comparison when available. Free POST /v1/prepare returns report_id; paid GET /v1/report reads it for 0.02 USDC via x402. Not a security audit.","price_listed":0.02,"price_asked":0.02,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":740,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"report_id":"nbx4_ad470a5aab2b590648729ab90f295ba76e0390ab2eddad01e360776a64000312"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"additionalProperties":false,"properties":{"report_id":{"description":"ID of a stored report returned by the free POST /v1/prepare endpoint; this example identifies an existing public sample.","pattern":"^nbx4_[0-9a-f]{64}$","type":"string"}},"required":["report_id"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"description":"Selected envelope fields only; the paid response includes further observations and evidence.","properties":{"address":{"pattern":"^0x[0-9a-fA-F]{40}$","type":"string"},"chain_id":{"const":8453,"type":"integer"},"code_hash":{"type":"object"},"control":{"type":"object"},"policy_version":{"type":"string"},"report_digest":{"type":"string"},"report_id":{"pattern":"^nbx4_[0-9a-f]{64}$","type":"string"},"snapshot_comparison":{"type":"object"},"source_verification":{"type":"object"},"token_metadata":{"type":"object"}},"required":["report_id","chain_id","address"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-19","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.02,"price_match":true,"latency_ms":740,"error":null}],"description_full":"Analyze a Base Mainnet token contract: block-pinned owner(), ERC-1967 proxy slots, ERC-20 metadata, code hash, best-effort source match and prior-snapshot comparison when available. Free POST /v1/prepare returns report_id; paid GET /v1/report reads it for 0.02 USDC via x402. Not a security audit.","last_updated":"2026-10-19T16:19:57.257Z","schemes":["exact"]}