# Harmonised Consumer Price Inflation Divergence

> Harmonised Consumer Price Inflation Divergence is a paid API for AI agents from stat.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).

Returns comparable harmonised consumer price inflation (HICP) data for multiple countries over a specified period, sourced exclusively from the European harmonised index to enable genuine cross-country comparison.

## Facts

- Endpoint: POST https://stat.halowerk.com/v1/inflation-divergence
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/harmonised-consumer-price-inflation-divergence-03669c76
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xEaK0i6K8w6EbEyC-Kw9S

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 harmonised-consumer-price-inflation-divergence-03669c76 -d '<json body>'
```

Example prompt: Can you pull the harmonised consumer price inflation figures for Germany, France, Italy, and Spain for 2022 and 2023, using the HICP so the numbers are actually comparable across all four countries?

## When to prefer this

Choose this endpoint when you need to compare inflation across multiple countries and methodological consistency matters — i.e. when you cannot accept the distortions introduced by placing national CPIs side by side. It is specifically valuable for EU/EEA country comparisons where HICP data exists, and when the analysis requires the numbers to be genuinely comparable rather than superficially so.

## Known failure modes

- Unsupported country code returns an error or empty result for that country
- Date range outside available HICP data returns partial or empty results
- Malformed request body causes a 400-level error
- Payment not attached or insufficient balance returns a 402 error
- Service temporarily unavailable returns a 5xx error

## How this service works

Returns harmonised consumer price inflation for several countries over a period, taken entirely from the European harmonised index so the numbers are actually comparable. That constraint is the product: national consumer price indices use different baskets, treat owner-occupied housing differently and rest on different base years, so placing them side by side produces a comparison that looks valid because everything is expressed in percent and is not.

## Output

A structured response containing harmonised consumer price inflation rates (HICP) for each requested country over the specified period, with values expressed on a consistent basis that allows genuine cross-country comparison — eliminating distortions from different national basket compositions, owner-occupied housing treatments, and base years.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "months": {
   "type": "integer",
   "default": 24,
   "maximum": 60,
   "minimum": 3
  },
  "countries": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 2,
    "minLength": 2
   },
   "maxItems": 12,
   "minItems": 1,
   "description": "Two-letter codes within the harmonised area, e.g. DE, FR, IT, ES."
  },
  "include_core": {
   "type": "boolean",
   "default": true,
   "description": "Also fetch core inflation, excluding energy and unprocessed food."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/harmonised-consumer-price-inflation-divergence-03669c76/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
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