{"uid":"cap_tb2z52n5p9FYxeFCC3kMo","slug":"b20-policy-members-enumerator-b8b8baef","name":"B20 Policy Members Enumerator","description":"🆕 b20-freeze-check answers one wallet; this enumerates the WHOLE list. Replays the Policy Registry's BlocklistUpdated/AllowlistUpdated events into the full membership of a B20's blocklist/allowlist: every address ever blocked or whitelisted, when, by whom, and the current member set per scope. Compliance-grade visibility no other tool provides. Pass address= (token) or policy= (registry policy ID).","url":"https://402.com.tr/api/x402/b20-policy-members","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"},"pathParams":{"type":"object"},"queryParams":{"type":"object","required":[],"properties":{"policy":{"type":"string","description":"Registry policy ID (optional)"},"address":{"type":"string","description":"B20 token address"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_p0MAAf1xi8Ws8_ppQMkBk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Enumerates the complete membership of a B20 token's blocklist and allowlist by replaying on-chain policy registry events, returning every address ever blocked or whitelisted, when, by whom, and the current member set per scope.","exampleAgentPrompt":"Can you give me the full blocklist and allowlist membership history for this B20 token — every address ever blocked or whitelisted, who did it, and when — using the token address 0xAbC123...?","exampleUseCases":null,"resultDescription":"Returns the complete enumerated membership of all blocklist and allowlist scopes for the specified B20 token or policy registry: every address that was ever added or removed, the timestamp and actor for each event, and the current live member set per scope — derived by replaying all BlocklistUpdated and AllowlistUpdated on-chain events.","failureModes":["Missing both address and policy parameters — returns 400 bad request requiring at least one","Invalid or non-B20 token address — no policy registry found, returns empty result or 404","Non-existent policy ID — returns empty member set","RPC node timeout when replaying large event histories — returns 503 or partial result","Malformed address string — returns 400 validation error","Token with no blocklist/allowlist events — returns empty arrays"],"whenToPreferThis":"Use this endpoint when you need compliance-grade, full-history enumeration of all addresses ever added to or removed from a B20 token's blocklist or allowlist — not just the current state of a single wallet. Prefer this over the b20-freeze-check endpoint (which answers for one wallet) when you need the entire member set, audit trail, or historical actor/timestamp data for regulatory review, risk analysis, or monitoring. Also use when you have a policy registry ID rather than a token address.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:01:20.246Z","isFirstParty":false}