{"uid":"cap_2iYp5AIYadzX6IBXl_kmN","slug":"b20-token-announcement-feed-reader-66defa94","name":"B20 Token Announcement Feed Reader","description":"🆕 B20 Asset tokens can post on-chain announcements (Announcement: id, description, uri) — issuer notices, corporate actions, redemptions — a channel ERC-20 has no equivalent for. Reads a token's announcement feed (active vs ended) from CDP-indexed events. The issuer-communications primitive for agents holding tokenized/RWA B20 assets.","url":"https://402.com.tr/api/x402/b20-announcements","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 Asset 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_wilMWwa0We6WBXkxKlUiO","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 on-chain announcement feed (active and ended) for a B20 Asset token, returning issuer notices, corporate actions, and redemption communications indexed from CDP events.","exampleAgentPrompt":"Pull the announcement feed for B20 token at address 0xAbC123... on Base — show me any active issuer notices, corporate actions, or redemption announcements.","exampleUseCases":null,"resultDescription":"A list of on-chain announcements for the specified B20 token, each containing an announcement id, description, and URI, categorized by status (active vs ended), sourced from CDP-indexed contract events.","failureModes":["Invalid or non-B20 token address returns empty feed or error","Address not found on Base chain returns no results","CDP indexing lag may mean very recent announcements are not yet reflected","Malformed address string causes request validation failure","Token with no announcements returns empty list"],"whenToPreferThis":"Use this endpoint when an AI agent holds or monitors B20 tokenized/RWA assets and needs to read issuer communications, corporate action notices, or redemption announcements that have no equivalent in standard ERC-20. Prefer this over generic blockchain event scrapers when the token is a B20 asset on Base and you need structured, CDP-indexed announcement data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:04:53.116Z","isFirstParty":false}