{"uid":"cap_FCemRAfIxy1U5qOHuVwkU","slug":"xx402-base-contract-control-event-feed-da0ac617","name":"xx402 Base Contract Control Event Feed","description":"Paid Base token, wallet, DeFi, chain-read, x402 buyer/seller discovery, and specialized Bitcoin 15-minute Up/Down prediction-market data packets for autonomous agents and risk tools.","url":"https://x402.xx402.icu/api/base-contract-control-event-feed?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"keys":["summary","contract_control_decision","priority_queue","risk_breakdown","control_event_queue","review_queue","avoid_queue","watchlist","bucket_counts","source_status","sources"],"type":"json"},"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_H1QvZBsn7a8lEM1NVlzCO","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":"Scans recent Base blockchain blocks for smart contract control events (ownership transfers, admin changes, upgrades, pauses, role grants/revocations) and returns risk-classified queues for autonomous agents.","exampleAgentPrompt":"Scan the last 2000 Base blocks for ownership, upgrade, and pause events on contract 0xAbC123... and give me a risk-classified breakdown showing which queue it lands in — priority, review, watchlist, or avoid.","exampleUseCases":[{"title":"Pre-investment contract governance audit","prompt":"Before I put money into this Base DeFi protocol at 0xDeFi456..., can you check the last 3000 blocks for any ownership transfers, role changes, or upgrade events and tell me if it shows up in the avoid or priority risk queue?"},{"title":"Chain-wide control event surveillance","prompt":"Do a broad scan of the last 1000 Base blocks for any recent admin, pause, or beacon upgrade events across all contracts — I want to see the full priority queue and bucket counts to spot anything suspicious."},{"title":"Smart contract security monitoring for risk tool","prompt":"Monitor contract 0xVault789... on Base for the last 5000 blocks, filtering specifically for role_granted and role_revoked events, and return up to 50 results so I can feed the risk breakdown into my alert system."}],"resultDescription":"Returns a JSON object with a summary, a contract_control_decision verdict, a priority_queue of high-urgency events, a risk_breakdown by event type, a control_event_queue of all matched events, a review_queue, avoid_queue, watchlist, bucket_counts for each risk tier, and source_status/sources metadata about data freshness.","failureModes":["Invalid or malformed contract address returns empty event queues","window_blocks value outside 100–5000 range returns validation error","Payment not included or insufficient triggers x402 payment-required response","No events found in the specified window returns empty queues with zero bucket counts","Unsupported event_type string may cause filtering to return no results"],"whenToPreferThis":"Choose this endpoint when you need real-time, risk-classified smart contract governance intelligence on Base L2 — specifically ownership, admin, upgrade, pause/unpause, and role events — bucketed into actionable queues (avoid, review, watchlist, priority). Prefer it over generic blockchain explorers when you need pre-computed risk decisions rather than raw logs, and when you want autonomous agent-ready JSON with decision fields rather than having to parse event logs yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T00:31:52.385Z","isFirstParty":false,"canonicalSlug":"xx402-base-contract-control-event-feed-da0ac617"}