# Price Index Inflation Rate Distribution Summary

> Price Index Inflation Rate Distribution Summary is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Summarizes up to 200 price-index inflation rate observations with quantiles and population standard deviation

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-inflation-change-summary?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/price-index-inflation-rate-distribution-summary-04f7684f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wgkEFJRR-e-bNFpo8YJsB

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 price-index-inflation-rate-distribution-summary-04f7684f -d '<json body>'
```

Example prompt: I have 8 pairs of price index readings — current and previous values — and I want a distribution summary showing quantiles and standard deviation of the implied inflation rates across all of them. Can you run the batch through the inflation distribution calculator?

## When to prefer this

Use this endpoint when you have a batch of 2–200 price index pairs and need a statistical distribution summary (quantiles, standard deviation) of the implied inflation rates rather than a single point calculation. It is ideal for comparing inflation across time periods, geographies, or asset classes in one call. Prefer this over a single-observation calculator when you need spread, variability, or percentile information across the dataset.

## Known failure modes

- Fewer than 2 rows provided — endpoint requires a minimum of 2 observation pairs
- current_index or previous_index is zero or negative — both must be strictly greater than 0
- More than 200 rows submitted — the maximum batch size is 200 observations
- Non-numeric values in index fields cause validation errors
- Mismatched currencies or reporting periods in rows produce misleading results (logical error, not API error)

## How this service works

Price index inflation rate - Distribution summary: Summarise up to 200 calculated observations with quantiles and population standard deviation. Metric: Price index inflation rate. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded distribution summary report.

## Output

Returns a JSON object containing a distribution summary of the calculated inflation rates across all submitted observation pairs, including quantiles (e.g. p25, p50, p75), population standard deviation, the formula used, units, and any relevant limitations of the analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "current_index",
     "previous_index"
    ],
    "properties": {
     "current_index": {
      "type": "number",
      "default": 110,
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Amount in a consistent supplied currency and reporting period",
      "exclusiveMinimum": 0
     },
     "previous_index": {
      "type": "number",
      "default": 100,
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Amount in a consistent supplied currency and reporting period",
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "current_index": 110,
     "previous_index": 100
    },
    {
     "current_index": 121.00000000000001,
     "previous_index": 110.00000000000001
    },
    {
     "current_index": 110,
     "previous_index": 100
    },
    {
     "current_index": 121.00000000000001,
     "previous_index": 110.00000000000001
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/price-index-inflation-rate-distribution-summary-04f7684f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)