{"uid":"cap_1J7zBf0HQactavxFlKAk2","slug":"etf-brief-spot-bitcoin-ethereum-etf-flow-summary-b67f012a","name":"ETF Brief – Spot Bitcoin/Ethereum ETF Flow Summary","description":"Fusion flow brief for spot Bitcoin or Ethereum ETFs in ONE call: latest total net flow, the inflow/outflow streak, the window cumulative, flow momentum, issuer concentration, total AUM and a deterministic accumulation, distribution or neutral verdict. Saves several issuer queries plus the differencing.","url":"https://payai.agentstools.dev/etf/brief","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["asset","region"],"properties":{"asset":{"enum":["btc","eth"],"type":"string","description":"Crypto asset whose spot ETFs to report: btc or eth."},"region":{"enum":["us","hk"],"type":"string","description":"ETF listing region: us (live) or hk (scaffold)."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_za34KHaeg4Odkr3xBXEUq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a single fused snapshot of spot BTC or ETH ETF flows including total net flow, streak, cumulative window, momentum, issuer concentration, AUM, and an accumulation/distribution/neutral verdict.","exampleAgentPrompt":"Can you pull the full ETF flow brief for spot Bitcoin ETFs in the US — I want to see net flows, the streak, AUM, and whether we're in an accumulation or distribution phase?","exampleUseCases":null,"resultDescription":"A fused JSON object containing: total net flow (latest), inflow/outflow streak count, window cumulative flow, flow momentum indicator, issuer concentration metrics, total AUM across issuers, and a deterministic verdict of accumulation, distribution, or neutral — all in a single call without needing to query individual issuers separately.","failureModes":["Invalid 'asset' value (not 'btc' or 'eth') returns validation error","Invalid 'region' value (not 'us' or 'hk') returns validation error","HK region is a scaffold and may return incomplete or placeholder data","Upstream data source unavailable may cause stale or missing flow data","Payment failure (x402) if USDC balance is insufficient"],"whenToPreferThis":"Use this endpoint when you need a single-call comprehensive snapshot of spot crypto ETF flows, AUM, and a directional verdict without having to query multiple issuer endpoints and manually compute streaks, momentum, or concentration. Ideal for dashboards, trading signals, or research workflows that need a quick authoritative summary of BTC or ETH ETF market dynamics in the US or HK.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:00:50.980Z","isFirstParty":false}