# US CPI Data & Inflation Report

> US CPI Data & Inflation Report is a paid API for AI agents from cpi-report-us.underscoredone.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns official US Consumer Price Index (CPI) inflation figures for the latest month, a specific month, or a historical date range.

## Facts

- Endpoint: POST https://cpi-report-us.underscoredone.com/cpi
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-cpi-data-inflation-report-87031487
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k3O9I6-q0EW5gdJ5k6q0c

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability us-cpi-data-inflation-report-87031487 -d '<json body>'
```

Example prompt: Can you pull up the official US CPI inflation figures for every month from January 2022 through December 2024?

## When to prefer this

Use this endpoint when you need authoritative, official US government CPI/inflation data for a specific month or historical range. Prefer over scraping news sites or using LLM knowledge when you need precise, up-to-date official figures. Best for economic analysis, financial modeling, cost-of-living calculations, or any workflow requiring verified US inflation statistics.

## Known failure modes

- Invalid period format (not year-month like 2024-03) returns an error
- Requested period outside available data range returns empty or error
- start date after end date may return empty range or error
- Network or payment failure (x402 payment not processed) blocks access

## How this service works

Gives you official United States inflation numbers from the government's BLS Consumer Price Index. Ask for the newest reading, a specific month in the past, or a whole range of months, and get back clear percentages for overall inflation and 'core' inflation (which ignores food and energy prices), plus a plain-English summary sentence.

## Output

A JSON response containing official US CPI inflation data — either the most recent month's figure, a specific month's figure, or a series of monthly figures across a requested date range, along with API version metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "end": {
   "type": "string",
   "description": "The last month of a historical range, written as year-month, like 2024-12. Leave out to end at the newest available month."
  },
  "start": {
   "type": "string",
   "description": "The first month of a historical range, written as year-month, like 2023-01. Leave out to start from the earliest available month."
  },
  "period": {
   "type": "string",
   "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."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "api_version": "1.0.0"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-cpi-data-inflation-report-87031487/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cpi-report-us.underscoredone.com](https://www.zero.xyz/host/cpi-report-us.underscoredone.com/llms.txt)