# Observed Unit Sales Velocity – Distribution Summary

> Observed Unit Sales Velocity – 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 2026-10-16).

Computes a statistical distribution summary for observed unit sales velocity across up to 200 retail data rows, each defined by units sold and observation days.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-unit-sales-velocity-summary?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/observed-unit-sales-velocity-distribution-summary-0b47f3e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__HFIEANaNXnrg1Xn_FKGY

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 observed-unit-sales-velocity-distribution-summary-0b47f3e4 -d '<json body>'
```

Example prompt: Can you summarize the distribution of our unit sales velocity? I have 4 retail records — the first store sold 84 units over 7 days, the second sold 92 units over 7.7 days, the third sold 110 units over 10 days, and the fourth sold 60 units over 5 days.

## When to prefer this

Choose this endpoint when you need a statistical distribution summary specifically for unit sales velocity (units sold per observation period) across multiple retail records. It is ideal for offline batch analysis of supplied retail figures — not for live inventory feeds, real-time POS data, or order execution. Best suited when you have 2–200 rows of sold_units and observed_days and want descriptive statistics on the velocity distribution.

## Known failure modes

- Fewer than 2 rows provided — minimum of 2 required
- More than 200 rows submitted — exceeds maxItems limit
- sold_units or observed_days missing from any row — both are required fields
- observed_days set to 0 or negative — exclusiveMinimum constraint violation
- Non-numeric values in sold_units or observed_days — schema type mismatch
- Payment not included or insufficient — x402 payment required at $0.01 USDC

## How this service works

Observed unit sales velocity - Distribution summary: Distribution summary for Observed unit sales velocity. Supplied retail figures only, up to 200 records. No platform access, live rates or order execution. One of 25 new profiles across 20 shared operations in this industry. 0.01 USDC includes one bounded distribution summary report.

## Output

A bounded distribution summary report containing statistical descriptors (such as mean, median, percentiles, spread metrics) for the computed unit sales velocity (units per day) across the submitted retail rows. Returns a single report covering up to 200 input records.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "sold_units",
     "observed_days"
    ],
    "properties": {
     "sold_units": {
      "type": "number",
      "default": 84,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "observed_days": {
      "type": "number",
      "default": 7,
      "maximum": 1000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "sold_units": 84,
     "observed_days": 7
    },
    {
     "sold_units": 92.4,
     "observed_days": 7.700000000000001
    },
    {
     "sold_units": 84,
     "observed_days": 7
    },
    {
     "sold_units": 92.4,
     "observed_days": 7.700000000000001
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/observed-unit-sales-velocity-distribution-summary-0b47f3e4/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)