{"uid":"cap_LKubjl8YZ2GPr0V2A1w4_","slug":"fathom-macroeconomic-data-api-popular-series-6fc02e06","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://fredthom.vercel.app/api/popular","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"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_i1-NTO__7_3I4jg37Zc1m","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":"Returns a curated list of popular macroeconomic time series (GDP, inflation, unemployment, interest rates, etc.) sourced from the FRED database","exampleAgentPrompt":"Can you pull up the most popular macroeconomic data series available — things like GDP, inflation, unemployment, and interest rates — so I can see what economic indicators are most widely tracked?","exampleUseCases":null,"resultDescription":"A list of popular FRED economic time series including series IDs, names, descriptions, units, frequency (e.g. monthly, quarterly), and possibly observation counts or popularity scores — covering indicators like GDP growth, CPI inflation, unemployment rate, and federal funds rate","failureModes":["402 Payment Required if USDC payment not attached","POST body malformed or missing required fields returns 400","FRED upstream unavailable causes 502 or timeout","Rate limit exceeded returns 429","Empty result set if no popular series match applied filters"],"whenToPreferThis":"Use this endpoint when you need a curated starting point of widely-used macroeconomic indicators rather than searching across 816,000+ series. Ideal for bootstrapping an economic dashboard, discovering which FRED series to track, or presenting users with a meaningful default set of economic KPIs. Prefer this over a search endpoint when you do not have a specific series ID in mind.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:30:27.353Z","isFirstParty":false}