# Price Index Inflation Rate Record Ranking

> Price Index Inflation Rate Record Ranking 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).

Ranks up to 200 records by calculated price-index inflation rate, returning each row's rank alongside the formula, units, and limitations in JSON.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-inflation-change-rank?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-record-ranking-7a19f0c3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QwROikA-8icwd1sAbYPUk

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-record-ranking-7a19f0c3 -d '<json body>'
```

Example prompt: I have 6 sets of price index readings — can you rank them by their inflation rate? Here are the pairs: (110, 100), (121, 110), (133, 121), (105, 100), (115, 110), (108, 100). Rank them from highest to lowest inflation and show me the formula used.

## When to prefer this

Choose this endpoint when you have multiple records each containing a current and previous price index value and need them ranked by their computed inflation rate in a single call, rather than calculating and sorting inflation rates manually. It is specifically designed for batch ranking of up to 200 rows with consistent output metadata including formula and units — useful for reporting pipelines, economic dashboards, or supplier cost analysis where auditability of the ranking methodology matters.

## Known failure modes

- Fewer than 2 rows supplied — minimum row count not met
- current_index or previous_index is zero or negative — excluded minimum violated
- More than 200 rows supplied — maximum item count exceeded
- Non-numeric values provided for index fields — schema validation failure
- Missing required fields current_index or previous_index in one or more rows

## How this service works

Price index inflation rate - Record ranking: Rank up to 200 supplied records by calculated value, preserving row indices; higher is not necessarily better. 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 record ranking report.

## Output

A JSON object containing each input row ranked by its calculated price-index inflation rate, preserving the original row indices, along with the formula used, units, and stated limitations of the metric.

## 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-record-ranking-7a19f0c3/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)