{"uid":"cap_mbIXh3QHnODyikWjk9iNZ","slug":"fathom-macroeconomic-data-api-search-tags-93ab8aac","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://fathoms.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":"0.04","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":"$0.04/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fXViN3RE8op5is8vxBOsK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.04","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search and retrieve tag metadata from 816,000+ FRED-powered economic time series, enabling discovery of relevant macroeconomic data categories.","exampleAgentPrompt":"Search the Fathom macroeconomic data API for tags related to 'inflation' and return up to 10 results so I can see what economic series categories are available.","exampleUseCases":[{"title":"Discover GDP data categories","prompt":"Search for tags related to 'GDP' in the Fathom macro data API — I want to see what categories of gross domestic product series are available, give me up to 20 results."},{"title":"Find unemployment indicator tags","prompt":"Can you search Fathom's FRED-powered API for tags matching 'unemployment' so I can figure out which series categories cover jobless rates and labor market data?"},{"title":"Browse interest rate series tags","prompt":"Look up tags for 'interest rates' in the Fathom macroeconomic API and return 15 results — I'm trying to identify which tag categories cover federal funds rate and Treasury yield data."}],"resultDescription":"Returns a JSON object containing an array of tag objects matching the search keyword, the original query string, and the data source identifier. Each tag object represents a metadata category used to classify FRED economic time series.","failureModes":["Missing required 'query' field returns an error","Empty query string may return zero tags","Invalid limit value (non-numeric string) may cause unexpected behavior","Network timeout if FRED upstream is slow","Zero results for very niche or misspelled keywords"],"whenToPreferThis":"Use this endpoint when you need to discover or browse the taxonomy of economic data tags available in the FRED database before fetching actual time series data. It is ideal for exploratory research to identify which categories and labels exist for a given macroeconomic topic, acting as a first step before querying specific series.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:44:03.229Z","isFirstParty":false}