---
title: "National CPI inflation (annual rate) for OECD countries: USA, GBR, JPN and more"
method: GET
path: "/v1/oecd/cpi"
---

# National CPI inflation (annual rate) for OECD countries: USA, GBR, JPN and more

`GET /v1/oecd/cpi`

## Request

- Base URL: `https://data.greeneris.io` (the document declares no server; this is the origin it was published from)
- URL: `https://data.greeneris.io/v1/oecd/cpi`
- Auth: none declared

Headline national CPI, year-on-year growth rate (%), monthly, from the official OECD SDMX API (dataset DSD_PRICES@DF_PRICES_ALL). Complements Eurostat HICP with USA, GBR, JPN, CAN and other OECD economies under one methodology. Query: ?country=USA (REF_AREA code) &last_n=12 (1-24 months, default 1). Returns date-sorted observations plus the latest print; 24h cache. Recency varies by country; series older than 18 months are refused (502, not charged). Data: OECD, CC BY 4.0.

## Query parameters

- `country` string
- `last_n` integer

## Response `200`

Successful response

- unknown

---

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