{"uid":"cap_AlIGkvC8xyqziU4T3rML6","slug":"fathom-macroeconomic-data-api-fred-series-comparison-5e2934cd","name":"Fathom Macroeconomic Data API — FRED Series Comparison","description":"Free macroeconomic data API powered by FRED. 816,000+ economic time series. GDP, inflation, unemployment, interest rates, and more.","url":"https://frederalfathom.vercel.app/api/compare?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["seriesIds"],"properties":{"limit":{"type":"string","description":"Observations per series (default: 10)"},"seriesIds":{"type":"array","description":"Array of 2-5 FRED series IDs to compare"}}},"responseSchema":{"type":"object","required":["source"],"properties":{"source":{"type":"string"},"comparison":{"type":"object"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.35","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":"$0.35/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_dj81yrmptAv-kQbep34OB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.35","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares 2–5 FRED economic time series side-by-side, returning aligned observations for indicators like GDP, inflation, unemployment, and interest rates.","exampleAgentPrompt":"Can you compare the US unemployment rate (UNRATE) and the federal funds rate (FEDFUNDS) using Fathom's FRED data API, pulling the last 20 observations for each?","exampleUseCases":[{"title":"Inflation vs interest rate analysis","prompt":"Pull the last 24 observations for CPI inflation (CPIAUCSL) and the federal funds rate (FEDFUNDS) side by side so I can see how rate hikes tracked inflation over the past two years."},{"title":"Recession indicator dashboard","prompt":"Compare GDP growth (GDP), unemployment (UNRATE), and industrial production (INDPRO) using FRED data — give me the last 12 observations each so I can spot recessionary patterns."},{"title":"Yield curve spread research","prompt":"Fetch FRED data for the 10-year Treasury yield (GS10) and the 2-year Treasury yield (GS2) and compare them — I want the last 30 observations to study the yield curve inversion."}],"resultDescription":"Returns a structured comparison object with aligned time series observations for each requested FRED series ID, plus a source attribution string identifying FRED as the data provider. Each series entry includes historical data points up to the requested limit.","failureModes":["Invalid or non-existent FRED series ID returns an error or empty series","Requesting fewer than 2 or more than 5 series IDs may be rejected","Very high observation limits may time out or return truncated data","FRED service downtime causes upstream data unavailability","Payment of 0.35 USDC required per call — insufficient funds causes 402 error"],"whenToPreferThis":"Choose this endpoint when you need to compare multiple macroeconomic time series from FRED in a single call, especially for research, dashboards, or economic analysis that benefits from aligned multi-indicator data. It is ideal when you already know the FRED series IDs and need side-by-side historical observations without building your own FRED integration.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-01T00:31:07.157Z","isFirstParty":false,"canonicalSlug":"fathom-macroeconomic-data-api-fred-series-comparison-5e2934cd"}