# Token Observed Price Change — Rolling Mean Report

> Token Observed Price Change — Rolling Mean Report is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Computes a rolling mean of token price change ratios across a supplied window of current/previous price observation pairs

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-token-price-change-rolling?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/token-observed-price-change-rolling-mean-report-801ebe93
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DDshQ07yNujVOtkPzhIoK

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 token-observed-price-change-rolling-mean-report-801ebe93 -d '<json body>'
```

Example prompt: Calculate the rolling mean of price changes for these 4 token observations — current prices 1.2, 1.32, 1.2, 1.32 and previous prices 1.0, 1.1, 1.0, 1.1 — using a rolling window of 2.

## When to prefer this

Choose this endpoint when you have a pre-collected batch of token current/previous price pairs and need a deterministic, reproducible rolling mean calculation without any live market data access. It is purpose-built for smoothing token price change observations statistically, not for real-time feeds or trade signals. Prefer it over general statistics APIs when you need a cost-effective ($0.01 per call), single-purpose, bounded computation on up to 200 observations.

## Known failure modes

- Fewer than 2 rows supplied — minimum row count not met
- Window size exceeds number of rows supplied — invalid window configuration
- current_price or previous_price is zero or negative — values must be strictly positive
- More than 200 rows supplied — exceeds maxItems limit
- Window integer outside 2–200 range — out-of-bounds parameter
- Malformed row objects with missing required fields — schema validation failure

## How this service works

Token observed price change — Rolling mean report: Rolling mean report for Token observed price change. Supplied token observations only. Deterministic calculation or caller-threshold verdict, not a live scan, safety proof or trade recommendation. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one bounded rolling mean report report.

## Output

A rolling mean report summarizing the average observed price change across the supplied token price observation pairs, calculated deterministically using the specified window size. Returns a bounded statistical result (not a live scan or trade signal) based solely on the caller-supplied data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "current_price",
     "previous_price"
    ],
    "properties": {
     "current_price": {
      "type": "number",
      "default": 1.2,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     },
     "previous_price": {
      "type": "number",
      "default": 1,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "current_price": 1.2,
     "previous_price": 1
    },
    {
     "current_price": 1.32,
     "previous_price": 1.1
    },
    {
     "current_price": 1.2,
     "previous_price": 1
    },
    {
     "current_price": 1.32,
     "previous_price": 1.1
    }
   ],
   "maxItems": 200,
   "minItems": 2
  },
  "window": {
   "type": "integer",
   "default": 2,
   "maximum": 200,
   "minimum": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-observed-price-change-rolling-mean-report-801ebe93/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)