{"uid":"cap_-IkrjyxnmWzsvDEmEAFmF","slug":"fathom-macroeconomic-data-api-popular-series-cd0b1fcc","name":"Fathom — Macroeconomic Data API (Popular Series)","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/popular","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"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_NLqwbNcLCACb4ChS4QT_7","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":"Returns a list of popular macroeconomic time series from the FRED database, including GDP, inflation, unemployment, and interest rate data","exampleAgentPrompt":"Pull up the most popular macroeconomic time series from FRED — I want to see what economic indicators like GDP, inflation, and unemployment are trending and available to explore.","exampleUseCases":[{"title":"Dashboard of key economic indicators","prompt":"Show me the most popular economic indicators from FRED right now — things like GDP, CPI, and unemployment rate — so I can build a dashboard with the most-watched series."},{"title":"Research starting point for economists","prompt":"I'm starting a macroeconomic research project. What are the most commonly used FRED economic time series I should be looking at?"},{"title":"Briefing on top economic data series","prompt":"Give me a rundown of the top FRED macroeconomic data series — I want to know what economic indicators are most popular so I can pick the right ones for my analysis."}],"resultDescription":"A list of popular FRED economic time series, each likely including the series ID, name, description, frequency, units, and other metadata needed to identify and subsequently fetch the actual time series data.","failureModes":["Payment failure (x402 payment of 0.04 USDC not accepted or wallet issue)","Rate limiting or server unavailability on the Vercel deployment","Empty or malformed response if FRED upstream is unavailable","Network timeout if the FRED data source is slow to respond"],"whenToPreferThis":"Use this endpoint when you need to discover which macroeconomic time series are most popular or relevant before fetching specific data, or when you want a curated starting set of economic indicators (GDP, inflation, unemployment, interest rates) without knowing exact FRED series IDs. Prefer this for economic research bootstrapping, dashboard population, or macroeconomic monitoring setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:37:06.928Z","isFirstParty":false}