{"uid":"cap_9CLfja0p9QQUHtUR_Ne-u","slug":"nbx4-contract-observations-report-fetch-ebe4e26f","name":"nbx4 Contract Observations Report Fetch","description":"Review risk-relevant preliminary, limited mechanism evidence before integrating an EVM token: block-pinned source-syntax hints and observed state for mint, pause, blacklist, transfer limits, fee/tax and proxy mechanisms, with optional V2 pool observations. Free POST /v3/prepare returns report_id; paid GET /v3/report reads stored JSON for 0.01 USDC on Base. Unknowns remain unknown; not a security audit or sellability verdict.","url":"https://nbx4.dev/v3/report?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["report_id"],"properties":{"report_id":{"type":"string","pattern":"^nbx4_v3_[0-9a-f]{64}$","description":"ID of an existing immutable v3 report returned by POST /v3/prepare; this is a public sample."}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["reportId","reportDigest"],"properties":{"address":{"type":"string","pattern":"^0x[0-9a-f]{40}$"},"chainId":{"type":"integer"},"finding":{"type":"object","properties":{"threat_analysis":{"type":"object","properties":{"severity":{"enum":["REVIEW","INDETERMINATE"],"type":"string"},"mechanisms":{"type":"object","properties":{"mint":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"pause":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"fees_tax":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"upgrades":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"lp_removal":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"transfer_limits":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"liquidity_change":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"sell_restrictions":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."},"blacklist_whitelist":{"type":"object","properties":{"status":{"enum":["observed_signal","unknown"],"type":"string"},"evidence":{"type":"array","items":{"type":"object"}}},"description":"Pinned evidence or an explicit unknown, not a safety verdict."}}}},"description":"Nine mechanism dimensions with explicit unknowns. Source syntax and endpoint changes are not a honeypot or sellability verdict."}},"description":"Paid-only observations. Older immutable reports may lack threat_analysis; a present source hint is not executable authority."},"reportId":{"type":"string","pattern":"^nbx4_v3_[0-9a-f]{64}$"},"blockHash":{"type":"string","pattern":"^0x[0-9a-f]{64}$"},"blockNumber":{"type":"integer"},"reportDigest":{"type":"string","pattern":"^[0-9a-f]{64}$"},"policyVersion":{"type":"string"}},"description":"Selected envelope fields only; the paid report also contains preliminary findings and explicit unknowns."}}}}},"responseSchema":{"type":"json","example":{"reportId":"nbx4_v3_9846634448486c5bf601313396b111fdbae6fd3586d4ba088fd598f04bca7a09","reportDigest":"9846634448486c5bf601313396b111fdbae6fd3586d4ba088fd598f04bca7a09"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7RKDs7cQ279Cp92Aae4S2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves a block-pinned, immutable smart contract observation report for a given report ID across 16 EVM mainnets","exampleAgentPrompt":"Pull the nbx4 v3 contract observation report with ID nbx4_v3_0d0d93c231b6e7e2eb022eda3edc3abdf7fda8b3eb84bae630fd8320a042dbc0 and show me the findings and block it was pinned to.","exampleUseCases":[{"title":"Audit token contract at pinned block","prompt":"Fetch the contract observation report nbx4_v3_0d0d93c231b6e7e2eb022eda3edc3abdf7fda8b3eb84bae630fd8320a042dbc0 and tell me what the findings say about the contract's proxy slots and owner at that block."},{"title":"Verify report digest for integrity check","prompt":"I need to confirm the report digest for nbx4_v3_0d0d93c231b6e7e2eb022eda3edc3abdf7fda8b3eb84bae630fd8320a042dbc0 — can you retrieve the full report and give me the reportDigest so I can verify it hasn't been tampered with?"},{"title":"Cross-chain contract state review","prompt":"Retrieve the previously prepared nbx4 block-pinned report nbx4_v3_0d0d93c231b6e7e2eb022eda3edc3abdf7fda8b3eb84bae630fd8320a042dbc0 and summarize the chain ID, block number, and any unknowns listed in the findings."}],"resultDescription":"Returns a JSON object containing the report ID, report digest (SHA-256 hex), block hash, block number, chain ID, contract address, policy version, and a findings object with block-pinned contract observations and explicit unknowns. The full paid report includes preliminary findings and unknowns not visible in the free envelope.","failureModes":["Invalid or malformed report_id (does not match ^nbx4_v3_[0-9a-f]{64}$) returns a 400 error","Report ID not found or not yet prepared returns a 404 error","Payment not received or x402 payment flow incomplete returns a 402 Payment Required","Network or upstream RPC failure on the relevant EVM chain returns a 503 or timeout","Rate limiting may apply for rapid successive reads"],"whenToPreferThis":"Use this endpoint when you have already obtained a report ID from POST /v3/prepare and need to retrieve the immutable, block-pinned findings for a specific EVM smart contract. Prefer this over re-running a full analysis when you need a reproducible, auditable snapshot tied to a specific block hash across any of the 16 supported EVM mainnets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-01T18:30:47.851Z","isFirstParty":false,"canonicalSlug":"nbx4-contract-observations-report-fetch-ebe4e26f"}