{"uid":"cap_DOoD0LM82TMACDFyO_oYr","slug":"us-cpi-year-over-year-inflation-rate-fred-7ae46401","name":"US CPI Year-Over-Year Inflation Rate (FRED)","description":"Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.","url":"https://agent402.tools/api/cpi-yoy","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"date":"2026-05-01","source":"FRED CPIAUCSL (BLS)","trailing12mo":[{"date":"2025-06-01","value":3}],"inflationYoYPct":3.4}},"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_rdL8cBYefj1jbCqV6Oyyq","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 the latest US Consumer Price Index (CPI-U) year-over-year inflation rate plus trailing 12 months of YoY readings, sourced from FRED CPIAUCSL.","exampleAgentPrompt":"What's the current US headline inflation rate and how has it trended over the past 12 months? Pull the latest CPI year-over-year data from FRED.","exampleUseCases":null,"resultDescription":"Returns the current US CPI-U year-over-year inflation rate (headline inflation) and a list of the trailing 12 monthly YoY readings, sourced from the FRED CPIAUCSL series with pc1 transformation. No parameters required.","failureModes":["FRED data source temporarily unavailable — upstream service outage","Stale data if FRED has not yet published the latest monthly release","Payment failure (x402) — insufficient USDC balance or payment not accepted","HTTP 402 if payment is not provided","Rate limiting or access restriction on the agent402.tools proxy"],"whenToPreferThis":"Use this endpoint when you need the current US headline CPI-U year-over-year inflation rate and/or its recent 12-month trend, without needing to set up FRED API credentials yourself. Ideal for macroeconomic dashboards, financial analysis agents, or any workflow that needs a quick, reliable, no-parameter inflation lookup sourced directly from official government data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:00:16.119Z","isFirstParty":false}