{"uid":"cap_aB3XeaG2W1VuISq0b_yaz","slug":"darkly-energized-list-x402-series-catalog-35c85973","name":"Darkly Energized: List x402 Series Catalog","description":"Catalog of the macro liquidity series x402 serves (Fed net liquidity, global central bank balance sheets), with unit, source and update frequency ($0.01). Daily readings, not weekly: the Fed's weekly H.4.1 balance sheet is merged with the daily Treasury General Account and overnight reverse repo data, so the aggregate liquidity series update each business day instead of once a week.","url":"https://darklyenergized.com/api/v1/x402/series?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"},"queryParams":{"type":"object","properties":{"search":{"type":"string","description":"Only series whose name or id contains this"},"source":{"type":"string","description":"Only series from this source"},"category":{"type":"string","description":"Only series in this category"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"array","items":{"type":"object","required":["id","name","category","frequency","source"],"properties":{"id":{"type":"string","example":"WALCL"},"name":{"type":"string","example":"Federal Reserve Total Assets"},"unit":{"type":"string","example":"USD"},"source":{"type":"string","example":"FRED"},"category":{"type":"string","example":"Central Bank"},"frequency":{"enum":["daily","weekly","monthly","continuous"],"type":"string","example":"weekly"}}}},"meta":{"type":"object","required":["timestamp"],"properties":{"count":{"type":"integer"},"dataRange":{"type":"object","properties":{"to":{"type":"string","format":"date"},"from":{"type":"string","format":"date"}}},"freshness":{"type":"object","properties":{"isStale":{"type":"boolean"},"frequency":{"type":"string"},"lastObservation":{"type":"string","format":"date"}}},"timestamp":{"type":"string","format":"date-time"},"pagination":{"type":"object","properties":{"total":{"type":"integer"},"cursor":{"type":"string"},"hasMore":{"type":"boolean"}}}}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LQxd6-mt2XnrQenmiDVx3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the catalog of macroeconomic and central bank data series available via the Darkly Energized x402 API, with metadata like category, frequency, source, and data range.","exampleAgentPrompt":"Show me all the macroeconomic series available on Darkly Energized — I want to see which central bank and FRED data series I can pull, maybe filter by the Central Bank category.","exampleUseCases":[{"title":"Discovering available central bank series","prompt":"What central bank data series does Darkly Energized have available? I want to see all of them so I can decide which ones to pull for my global liquidity dashboard."},{"title":"Searching for Federal Reserve data","prompt":"Search the Darkly Energized series catalog for anything related to Federal Reserve assets — I want to find the right series IDs before I start querying them."},{"title":"Filtering series by data source","prompt":"Can you list all the data series Darkly Energized serves that come from FRED? I want to know which ones are available and how frequently they update."}],"resultDescription":"An array of series objects, each containing the series ID, name, category, frequency (daily/weekly/monthly/continuous), source (e.g. FRED), and unit. Also includes metadata: total count, data date range (from/to), freshness info (last observation date, staleness flag, frequency), pagination cursor, and a response timestamp.","failureModes":["No series match the provided search/source/category filters — returns empty data array","Invalid query parameter type — returns validation error","Payment not included or insufficient — returns 402 Payment Required","Service temporarily unavailable — returns 5xx error"],"whenToPreferThis":"Use this endpoint first when building an integration with Darkly Energized to discover which series IDs and categories are available before querying specific data. Prefer this over direct series queries when you don't yet know the exact series ID, when you want to explore available data coverage by source or category, or when building a dynamic UI that lets users pick from available series.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:06:16.792Z","isFirstParty":false,"canonicalSlug":"darkly-energized-list-x402-series-catalog-35c85973"}