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US Core CPI Year-Over-Year Inflation Rate (FRED CPILFESL)
x402
US Core CPI Year-Over-Year Inflation Rate (FRED CPILFESL) is a paid API for AI agents from finance-api.kdlcfa.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns the latest US Core CPI (excluding food & energy) year-over-year inflation rate sourced from FRED's CPILFESL series
Price / call$0.01
Success—
StatusUnknown
How this service works
US Core CPI (excluding food & energy) year-over-year inflation rate, via FRED (CPILFESL)
Output
Returns the latest US Core CPI year-over-year percentage change (CPILFESL series from FRED), representing inflation in consumer prices excluding volatile food and energy components, along with the associated reporting date or period.
Example use cases
Macro dashboard inflation tracker
“Pull the current US core CPI year-over-year rate from FRED so I can update my macro dashboard — I need the number excluding food and energy.”
Fed policy analysis report
“I'm writing a note on Fed policy — can you get me the latest core CPI inflation reading, the one that strips out food and energy, so I can discuss underlying price pressures?”
Inflation alert monitoring bot
“Check what the current US core inflation rate is right now — year-over-year CPI ex food and energy — and let me know if it's moved above 3.5%.”
Technical details
Endpoint
GEThttps://finance-api.kdlcfa.workers.dev/core-cpi-usWhen to prefer
Choose this endpoint when you need the US Core CPI (ex food & energy) specifically — the inflation measure most closely watched by the Federal Reserve for policy decisions. Prefer it over headline CPI endpoints when you want to exclude volatile food and energy price swings to assess underlying inflation trends. Ideal for macro research, Fed policy analysis, and economic dashboards requiring a single clean figure from the authoritative FRED data source.
Side effects
- FRED API unavailable or rate-limited — worker may return 500 or stale data
- Data not yet updated for the current month — most recent value may lag by 2-4 weeks after CPI release
- Payment not completed (x402) — returns 402 Payment Required if USDC payment is not attached
- Network timeout from Cloudflare Worker to FRED upstream
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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