{"uid":"cap_nUzGAKiBCC2qM64y-bpZp","slug":"b20-token-policy-watch-seizable-state-detector-e7c1bde1","name":"B20 Token Policy Watch — Seizable State Detector","description":"The B20-only rug vector: a token can launch clean and later attach a sender blocklist (PolicyUpdated) — silently becoming seizable via burnBlocked. This reads the token's full policy/pause event timeline (CDP-indexed onchain events) plus the live policy state, and tells you if — and exactly WHEN — it turned seizable.","url":"https://402.com.tr/api/x402/b20-policy-watch","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":["address"],"properties":{"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":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XoefdqYkJI5PmhRW6oXNW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches the full policy/pause event timeline and live policy state for a B20 token to determine if and exactly when it became seizable via sender blocklist attachment.","exampleAgentPrompt":"Can you check the full policy event history for this B20 token at 0x1234...abcd and tell me if it's ever become seizable — and exactly when the sender blocklist was attached if so?","exampleUseCases":null,"resultDescription":"Returns the complete CDP-indexed onchain policy and pause event timeline for the given B20 token address, the current live policy state, a seizability verdict, and the precise timestamps of any PolicyUpdated events that enabled burnBlocked/sender blocklisting.","failureModes":["Invalid or non-B20 token address returns an error or empty result","Address is valid but has no policy events indexed yet","CDP indexing lag causes missing recent events","Network timeout if Base RPC is slow","Non-Base chain addresses may not be supported"],"whenToPreferThis":"Use this endpoint specifically when auditing B20 tokens on Base for the rug vector where a token launches clean and later silently attaches a sender blocklist to enable seizure via burnBlocked. It provides both historical event timelines and live state, unlike generic token security scanners that only check current state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:56:15.792Z","isFirstParty":false}