{"uid":"cap_pI8T6JJdC3eBmrpDOajwt","slug":"api-cryptoetfsentinel-com-00a535e9","name":"Crypto ETF Sentinel Pipeline Deltas","description":"Crypto ETF Sentinel — Week-over-week pipeline delta for US spot crypto ETFs: change in stage counts, filings-7d and under-review count vs a prior daily snapshot (days_back, default 7, max 90). Use when you want the net movement of the crypto ETF pipeline since your last check rather than a full snapshot. Returns 404 (no charge) when no snapshot exists.","url":"https://api.cryptoetfsentinel.com/v1/pipeline/deltas","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":{"request":{"type":"http","method":"GET","queryParams":{"days_back":"7"}},"response":{"data":{"likely_delta":-1,"stage_deltas":{"withdrawn":1,"registration_filed":-1},"at_risk_delta":-1,"unclear_delta":2,"comparison_date":"2026-06-11","filings_7d_delta":-2,"now_trading_delta":0,"under_review_delta":0,"pipeline_active_delta":-1},"meta":{"note":null,"page":null,"limit":null,"total":1,"offset":null,"full_count":null},"error":null}},"exampleRequest":{"type":"http","method":"GET","queryParams":{"days_back":"7"}},"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CQUITEdc3M_i-QQZaxkd-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns week-over-week delta metrics for the US spot crypto ETF approval pipeline: changes in stage counts, filings in last 7 days, and under-review count vs. a prior daily snapshot.","exampleAgentPrompt":"Pull the Crypto ETF Sentinel pipeline deltas for 7 days back and tell me how the US spot crypto ETF approval stages have shifted — specifically how many more or fewer filings and under-review ETFs there are compared to that snapshot.","exampleUseCases":null,"resultDescription":"A JSON object containing week-over-week pipeline delta metrics: changes in count per regulatory stage (e.g. registration_filed, under_review, launch_imminent, trading), number of new filings in the last 7 days, and delta in under-review count relative to the prior daily snapshot. Returns 404 (no charge) if no snapshot exists for the requested days_back value.","failureModes":["404 returned when no snapshot exists for the requested days_back value (no charge applied)","Invalid days_back parameter may result in a 400 or empty response","Service unavailable if underlying SEC data pipeline has not refreshed"],"whenToPreferThis":"Use this endpoint when you need to understand directional changes in the US spot crypto ETF regulatory pipeline over time — specifically how stage counts and filing activity have shifted relative to a prior snapshot. Prefer this over static directory endpoints when the goal is trend detection or monitoring rather than point-in-time lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:40:29.162Z","isFirstParty":false}