# Vextorium US CPI Data

> Vextorium US CPI Data is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).

Returns US Consumer Price Index (CPI) data including headline, core, food, and energy CPI with index values and year-over-year percentage changes for up to 24 months.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/us-cpi?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-us-cpi-data-c298087a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FXokB6TQ4_TGQ1uZc664_

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 vextorium-us-cpi-data-c298087a -d '<json body>'
```

Example prompt: What's the latest US inflation data? Give me the headline, core, food, and energy CPI readings with year-over-year changes for the past 12 months.

## When to prefer this

Use this endpoint when you need official US CPI inflation data broken down by headline, core, food, and energy components with year-over-year percentage changes. Prefer this over scraping BLS directly or using general economic APIs when you need structured, pay-per-call access with no subscription, especially in agent workflows that pay via x402/USDC.

## Known failure modes

- Invalid months value (outside 1-24 range) may return an error or default behavior
- Data may lag by one month due to BLS release schedule
- Network or provider timeout returning 5xx error
- Malformed request body returning 400 bad request

## How this service works

232 pay-per-call data APIs for AI agents: official statistics and economy (ECB, Fed, Eurostat, World Bank, SEC, BOE, INE), crypto prices and sentiment, Spanish public data, compliance (sanctions, VAT, IBAN, LEI), science, weather, web and developer tools and local AI text tools. Pay in USDC via x402.

## Output

Returns a JSON object with two top-level keys: 'last' (the most recent month's CPI readings) and 'series' (an array of monthly readings). Both contain headline_cpi, core_cpi, foods_cpi, and energy_cpi sub-objects, each with an index value, month label (YYYY-MM), and year_over_year_pct. Data is sourced from the U.S. Bureau of Labor Statistics (CPI-U, not seasonally adjusted).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "months": {
   "type": "integer",
   "description": "1-24 (default 12)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "last": {
   "core_cpi": {
    "index": 338.041,
    "month": "2026-08",
    "year_over_year_pct": 2.45
   },
   "foods_cpi": {
    "index": 350.418,
    "month": "2026-08",
    "year_over_year_pct": 2.67
   },
   "energy_cpi": {
    "index": 329.351,
    "month": "2026-08",
    "year_over_year_pct": 16.28
   },
   "headline_cpi": {
    "index": 334.98,
    "month": "2026-08",
    "year_over_year_pct": 3.4
   }
  },
  "series": {
   "core_cpi": [
    {
     "index": 334.391,
     "month": "2026-03",
     "year_over_year_pct": 2.6
    },
    {
     "index": 335.803,
     "month": "2026-04",
     "year_over_year_pct": 2.75
    }
   ],
   "foods_cpi": [
    {
     "index": 346.796,
     "month": "2026-03",
     "year_over_year_pct": 2.68
    },
    {
     "index": 348.499,
     "month": "2026-04",
     "year_over_year_pct": 3.18
    }
   ],
   "energy_cpi": [
    {
     "index": 310.28,
     "month": "2026-03",
     "year_over_year_pct": 12.53
    },
    {
     "index": 329.907,
     "month": "2026-04",
     "year_over_year_pct": 17.87
    }
   ],
   "headline_cpi": [
    {
     "index": 330.213,
     "month": "2026-03",
     "year_over_year_pct": 3.26
    },
    {
     "index": 333.02,
     "month": "2026-04",
     "year_over_year_pct": 3.81
    }
   ]
  },
  "source": "U.S. Bureau of Labor Statistics (CPI-U, not seasonally adjusted)"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-us-cpi-data-c298087a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)