{"uid":"cap_kJDpx0vFRzY8NCTQA563h","slug":"fred-series-metadata-lookup-d99761c2","name":"FRED Series Metadata Lookup","description":"Metadata for a FRED series: title, frequency, units, seasonal adjustment, observation date range, and popularity. Use before /api/fred-series to confirm the series fits your needs. ?seriesId=UNRATE This product uses the FRED(R) API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.","url":"https://agent402.tools/api/fred-series-info","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["seriesId"],"properties":{"seriesId":{"type":"string","description":"FRED series ID, e.g. UNRATE"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["id","title","frequency","units","observationStart","observationEnd","popularity"],"properties":{"id":{"type":"string"},"title":{"type":"string"},"units":{"type":"string"},"frequency":{"type":"string"},"popularity":{"type":"integer"},"observationEnd":{"type":"string"},"observationStart":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"id":"UNRATE","title":"Unemployment Rate","units":"Percent","frequency":"Monthly","popularity":94,"observationEnd":"2026-05-01","observationStart":"1948-01-01"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fQBnFvKaf3S12QMv5FX8N","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns descriptive metadata for a FRED economic data series — title, frequency, units, seasonal adjustment, date range, and popularity score.","exampleAgentPrompt":"Before I pull the actual data, can you check the metadata for FRED series UNRATE — specifically its frequency, units, seasonal adjustment, and the date range it covers?","exampleUseCases":null,"resultDescription":"Returns a JSON object containing the series title, observation frequency (e.g. monthly, quarterly), units of measurement, seasonal adjustment status, earliest and latest observation dates, and a popularity score — everything needed to confirm the series is appropriate before fetching its data.","failureModes":["Invalid or unknown seriesId returns an error — FRED series IDs are case-sensitive (e.g. 'unrate' may fail where 'UNRATE' succeeds)","Network timeout or upstream FRED API unavailability causes a 5xx response","Missing required seriesId query parameter returns a 400-level validation error","Discontinued or renamed series may return limited metadata with no recent observation dates"],"whenToPreferThis":"Use this endpoint before calling /api/fred-series to confirm a series exists, understand its frequency and units, and verify it covers the time range you need. Prefer this over directly fetching series data when you are unsure whether a given series ID is valid or appropriate for your analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T13:08:49.156Z","isFirstParty":false}