{"uid":"cap_-QGAoG0pMpix8rw4S2C9q","slug":"fathom-macroeconomic-data-api-tag-series-search-773c8730","name":"Fathom Macroeconomic Data API — Tag Series Search","description":"Free macroeconomic data API powered by FRED. 816,000+ economic time series. GDP, inflation, unemployment, interest rates, and more.","url":"https://fredfathom.vercel.app/api/tag-series?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["tag"],"properties":{"tag":{"type":"string","description":"Tag name (e.g. gdp, monthly, inflation, nsa)"},"limit":{"type":"string","description":"Max results (default: 20)"}}},"responseSchema":{"type":"object","required":["source"],"properties":{"tag":{"type":"string"},"series":{"type":"array","items":{"type":"object"}},"source":{"type":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.06","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.06/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.06","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.06","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_F6E1mgNe3HSgmuND_rjCo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.06","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of FRED economic time series associated with a given tag (e.g. 'gdp', 'monthly', 'inflation', 'nsa')","exampleAgentPrompt":"Show me up to 30 FRED economic time series tagged with 'inflation' so I can pick the right dataset to analyze.","exampleUseCases":[{"title":"Discover inflation data series","prompt":"I want to explore all the inflation-related time series available in FRED — can you pull up to 20 series tagged 'inflation' so I can see what datasets exist?"},{"title":"Find monthly unemployment indicators","prompt":"Give me a list of FRED economic series tagged 'monthly' and 'unemployment' — I'm looking for the most relevant monthly unemployment datasets, show me up to 25."},{"title":"Explore GDP data series catalog","prompt":"What FRED time series are tagged with 'gdp'? Pull the top 20 so I can decide which GDP series to use for my economic model."}],"resultDescription":"Returns a JSON object containing the tag name queried, an array of matching economic time series objects (each with series identifiers and metadata from FRED), and the data source attribution string.","failureModes":["Unknown or misspelled tag returns empty series array","Missing required 'tag' field returns a validation error","Limit parameter must be numeric string; invalid format may cause errors","FRED backend downtime may cause upstream failures","Very broad tags (e.g. 'annual') may return truncated results at default limit of 20"],"whenToPreferThis":"Use this endpoint when you need to discover which FRED economic time series exist for a given thematic tag (e.g. 'gdp', 'inflation', 'nsa') rather than fetching a known series directly. It is ideal for exploration and catalog search before retrieving actual data values from a specific series.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:30:59.357Z","isFirstParty":false,"canonicalSlug":"fathom-macroeconomic-data-api-tag-series-search-773c8730"}