{"uid":"cap_DGB9JcbNHHYNryXCcsAIx","slug":"fathom-macroeconomic-data-api-sources-endpoint-44f84953","name":"Fathom Macroeconomic Data API — Sources Endpoint","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/sources","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_CdX0-e9eZcCSIKHnzzJeK","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":"Lists available macroeconomic data sources accessible through the Fathom API, which is powered by the FRED database with 816,000+ economic time series.","exampleAgentPrompt":"What data sources are available in the Fathom macroeconomic API — I want to see all the FRED-backed sources I can pull GDP, inflation, and unemployment data from.","exampleUseCases":null,"resultDescription":"A list of available macroeconomic data sources within the Fathom/FRED-powered system, including source identifiers and metadata that can be used to query specific economic time series.","failureModes":["402 Payment Required if USDC payment of $0.35 not provided via x402 protocol","500 server error if the underlying FRED connection is unavailable","Empty or partial source list if upstream FRED API is rate-limited","Timeout if the Vercel serverless function exceeds execution limits"],"whenToPreferThis":"Use this endpoint when you need to discover what macroeconomic data sources are available before querying specific time series. Ideal as a first step in a workflow where you need to identify the right source for GDP, CPI, unemployment, interest rate, or other macro data. Prefer over direct FRED API when you want a managed, pay-per-call interface without managing your own FRED API key.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:46:28.135Z","isFirstParty":false}