{"uid":"cap_Hblx0B7lMLJZMaJ8ahAE2","slug":"fathom-macroeconomic-data-api-search-tags-68ffd25f","name":"Fathom Macroeconomic Data API — Search Tags","description":"Free macroeconomic data API powered by FRED. 816,000+ economic time series. GDP, inflation, unemployment, interest rates, and more.","url":"https://fredthom.vercel.app/api/search-tags","method":"POST","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"limit":{"type":"string","description":"Max results (default: 20)"},"query":{"type":"string","description":"Search keyword"}}},"responseSchema":{"type":"object","required":["source"],"properties":{"tags":{"type":"array","items":{"type":"object"}},"query":{"type":"string"},"source":{"type":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.35","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":"$0.35/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.35","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.35","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TvfwBn3QgIhhqjX93CuD7","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.35","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search and discover tags/categories within FRED's 816,000+ macroeconomic economic time series database","exampleAgentPrompt":"Search the Fathom FRED macroeconomic database for tags related to 'inflation' and return up to 10 results so I can find the right economic series to explore.","exampleUseCases":null,"resultDescription":"Returns an array of tag objects matching the search keyword, along with the original query string and the data source identifier. Tags help navigate and filter the 816,000+ FRED economic time series.","failureModes":["Missing required 'query' field returns validation error","No matching tags found returns empty tags array","Invalid limit format may fall back to default of 20","Service unavailable returns error from Vercel hosting"],"whenToPreferThis":"Use this endpoint when you need to discover or browse the taxonomy of tags available in FRED's macroeconomic database before fetching actual time series data. This is the right choice when you know a keyword (e.g. 'GDP', 'unemployment') but need to find the correct tag identifiers to use in subsequent data queries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:35:21.356Z","isFirstParty":false}