---
title: "GetUsCpiMonthly"
method: GET
path: "/api/economic/v1/get-us-cpi-monthly"
tags: ["EconomicService"]
---

# GetUsCpiMonthly

`GET /api/economic/v1/get-us-cpi-monthly`

## Request

- Base URL: `https://api.worldmonitor.app`
- URL: `https://api.worldmonitor.app/api/economic/v1/get-us-cpi-monthly`
- Auth: one of:
  - API key in header `X-WorldMonitor-Key`
  - API key in header `X-Api-Key`

GetUsCpiMonthly returns seasonally adjusted US CPI-U for headline, core, food, energy, shelter, and services. Month-over-month and year-over-year changes are computed from that index. history=false is the latest month. history=true is every month from 1947.

## Query parameters

- `history` boolean
- `limit` integer
- `jmespath` string

## Response `200`

OK

- WorldmonitorEconomicV1GetUsCpiMonthlyResponse: GetUsCpiMonthlyResponse is the CPI basket for the requested window.
  - `months` WorldmonitorEconomicV1UsCpiMonth[]
    - `month` integer: Warning: Values > 2^53 may lose precision in JavaScript
    - `headline` WM42: UsCpiReading is one seasonally adjusted CPI-U index for one month.
      - `index` number, double: Index level, 1982-84=100.
      - `monthOverMonth` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
      - `yearOverYear` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
    - `core` WM42: UsCpiReading is one seasonally adjusted CPI-U index for one month.
      - `index` number, double: Index level, 1982-84=100.
      - `monthOverMonth` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
      - `yearOverYear` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
    - `food` WM42: UsCpiReading is one seasonally adjusted CPI-U index for one month.
      - `index` number, double: Index level, 1982-84=100.
      - `monthOverMonth` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
      - `yearOverYear` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
    - `energy` WM42: UsCpiReading is one seasonally adjusted CPI-U index for one month.
      - `index` number, double: Index level, 1982-84=100.
      - `monthOverMonth` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
      - `yearOverYear` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
    - `shelter` WM42: UsCpiReading is one seasonally adjusted CPI-U index for one month.
      - `index` number, double: Index level, 1982-84=100.
      - `monthOverMonth` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
      - `yearOverYear` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
    - `services` WM42: UsCpiReading is one seasonally adjusted CPI-U index for one month.
      - `index` number, double: Index level, 1982-84=100.
      - `monthOverMonth` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
      - `yearOverYear` WorldmonitorEconomicV1UsCpiPercentChange: UsCpiPercentChange is a simple percent change computed from the index.
        - `percent` number, double: Percent change. 2.5 means 2.5 percent, not an annualized rate.
  - `unavailable` boolean: True when the seeded series is unavailable. An empty month list is not a zero print.

## Other responses

- `400`: Validation error
- `401`: Missing or invalid API key.
- `403`: API access requires an active subscription (the API key's subscription is inactive or expired).
- `429`: Rate limit exceeded.
- `503`: Service unavailable. Billing-verification responses include code and X-Billing-Verification; other gateway infrastructure failures use the generic GatewayError shape.
- `default`: Gateway or handler error response.

---

[API](https://skmtc.dev/worldmonitor/apis/worldmonitor-api.md) · [All operations](https://skmtc.dev/worldmonitor/apis/worldmonitor-api/llms.txt) · [OpenAPI document](https://skmtc.dev/worldmonitor/apis/worldmonitor-api/revisions/e3dc8463a5c9?raw)