{"uid":"cap_2m0eb9Geu_JCbMuL4vKQ5","slug":"xx402-base-erc20-approval-risk-feed-6e4e1e3e","name":"xx402 Base ERC20 Approval Risk 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-approval-risk-feed?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"keys":["summary","purchase_acceptance","buyer_next_action","next_paid_call","decision_evidence","repeat_purchase_guard","approval_risk_decision","priority_queue","best_next_products","risk_breakdown","review_queue","avoid_queue","approval_risk_queue","revocation_priority_queue","spender_watchlist","token_summaries","bucket_counts","source_status","not_financial_advice","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_IaIodCLuIbhUrC3P5EG7q","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 approval logs for ERC20 tokens and returns risk-scored approval data, spender watchlists, and agent decision guidance for autonomous DeFi risk management.","exampleAgentPrompt":"Scan the last 500 blocks on Base for approval risks across USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) and WETH (0x4200000000000000000000000000000000000006), return up to 12 rows, and tell me which spenders I should revoke or watch out for.","exampleUseCases":[{"title":"DeFi wallet pre-trade risk check","prompt":"Before I swap on Base, scan approval risks for USDC and WETH over the last 500 blocks and tell me if any spenders in my approval history look dangerous or need immediate revocation."},{"title":"Autonomous agent approval guardian","prompt":"Every hour, check the last 1000 blocks on Base for risky ERC20 approvals across USDC and WETH, flag anything in the avoid queue, and give me a prioritized list of what to revoke first."},{"title":"DeFi risk dashboard data feed","prompt":"Pull the latest approval risk data for Base tokens 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and 0x4200000000000000000000000000000000000006 over a 2000-block window with up to 25 rows so I can populate my risk dashboard."}],"resultDescription":"Returns a JSON object with approval risk decisions, a priority queue of high-risk approvals, a review queue, an avoid queue, a revocation priority queue, a spender watchlist, per-token summaries, bucket counts, risk breakdowns, buyer next action guidance, and source status metadata — all structured for autonomous agent consumption.","failureModes":["Invalid or non-existent token address returns empty results or error","window_blocks out of range (below 100 or above 3000) returns 400 validation error","limit out of range (below 3 or above 30) returns validation error","token_limit exceeding 5 returns validation error","Payment not completed via x402 protocol returns 402 Payment Required","Base RPC node unavailable causes scan failure with source_status error flag"],"whenToPreferThis":"Choose this endpoint when an autonomous agent or risk tool needs on-chain approval risk data specifically for Base network ERC20 tokens, particularly when building revocation priority lists, spender watchlists, or DeFi risk dashboards that require structured, agent-ready decision outputs rather than raw blockchain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T00:46:48.413Z","isFirstParty":false,"canonicalSlug":"xx402-base-erc20-approval-risk-feed-6e4e1e3e"}