{"uid":"cap_V5rffjkOGCumto6_2qkeF","slug":"usdc-eurc-blacklist-events-4232f8ab","name":"USDC & EURC Blacklist Events","description":"Circle USDC and EURC control events on Ethereum, Base and Arbitrum, newest first: blacklistings and reversals, pauses, minter allowances, role changes and proxy upgrades, each with block, time, transaction and address. Since a date (up to 90 days back), filter by chain, token and type, 500 a page. Use to monitor freezes and issuer control actions. From the contracts' own logs, refreshed daily. JSON, no API key. $0.01 per call. Blockchain IQ.","url":"https://www.blockchainiq.co/api/x402/v1/stablecoins/events?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{"type":{"enum":["blacklist","pause","minter","role","upgrade"],"type":"string","description":"blacklist (Blacklisted, UnBlacklisted), pause, minter (MinterConfigured, MinterRemoved), role (role holder changes), upgrade (Upgraded, AdminChanged)"},"chain":{"enum":["ethereum","base","arbitrum"],"type":"string"},"since":{"type":"string","format":"date","description":"First UTC day, at most 90 days ago; default 30 days ago"},"token":{"enum":["USDC","EURC"],"type":"string"},"cursor":{"type":"string","description":"nextCursor from the previous page"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_8mbQlg5XKpOk7OCi3Oa8i","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":"Returns Circle USDC and EURC stablecoin control events (blacklistings, pauses, minter changes, role changes, proxy upgrades) on Ethereum, Base, and Arbitrum, newest first.","exampleAgentPrompt":"Pull the latest USDC blacklist and unblacklist events from the past 30 days on Ethereum — I want to see which addresses were frozen or unfrozen by Circle.","exampleUseCases":[{"title":"Compliance monitoring for blacklisted wallets","prompt":"Show me all USDC blacklist and unblacklist events on Ethereum and Base over the last 7 days — I need to check if any wallet addresses we interact with have been frozen by Circle."},{"title":"Minter allowance audit across chains","prompt":"Get me the most recent minter configuration changes for USDC on Arbitrum over the past 30 days — I want to audit which minters have had their allowances changed or removed."},{"title":"Stablecoin contract upgrade tracking","prompt":"Pull all proxy upgrade and admin change events for EURC on Ethereum since 60 days ago — I'm tracking when Circle has upgraded the EURC contract."}],"resultDescription":"A paginated JSON list of stablecoin control events, each including event type (e.g. Blacklisted, UnBlacklisted, MinterConfigured, Upgraded), block number, block timestamp, transaction hash, and relevant addresses. A nextCursor field is included when more pages are available. Events are sourced directly from on-chain contract logs and refreshed daily.","failureModes":["Invalid 'since' date beyond 90 days ago returns an error","Unsupported chain, token, or type enum values return a validation error","Invalid or expired cursor returns a pagination error","No events found for the specified filters returns an empty result set","Service unavailable or rate limiting returns a non-200 HTTP status"],"whenToPreferThis":"Choose this endpoint when you need to monitor or audit Circle's issuer control actions — specifically blacklistings, pauses, minter changes, role updates, or contract upgrades — on USDC or EURC contracts across Ethereum, Base, or Arbitrum. It is the right choice for compliance workflows, wallet screening, DeFi risk monitoring, or on-chain governance tracking. Prefer it over generic blockchain explorers when you need pre-parsed, filtered, and categorized stablecoin control events without writing your own log parsing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T12:42:42.676Z","isFirstParty":false,"canonicalSlug":"usdc-eurc-blacklist-events-4232f8ab"}