Tool detail

US CPI Data & Inflation Report

Returns official US BLS CPI inflation data (overall and core) for the newest, a specific, or a range of months.

Categories: Company financials

Use when

get the latest US inflation (CPI) reading
get CPI for a specific past month
get a range of months of CPI data for charting

Not for

not state, regional, or category-level CPI breakdowns

Inputs

POST JSON body, all optional: period (YYYY-MM, single month) or start/end (YYYY-MM range, not combined with period); omit all for the newest

Admitted input schema

{
  "type": "object",
  "properties": {
    "end": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "The last month of a historical range, written as year-month, like 2024-12. Leave out to end at the newest available month."
    },
    "period": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "A single month to look up, written as year-month, like 2024-03. Leave this out if you want the newest data or a range instead."
    },
    "start": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "The first month of a historical range, written as year-month, like 2023-01. Leave out to start from the earliest available month."
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://cpi-report-us.underscoredone.com/cpi

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://cpi-report-us.underscoredone.com/cpi
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z