# Unit Return Rate Ordered Trend Analysis

> Unit Return Rate Ordered Trend Analysis is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Analyzes ordered time-series data of unit return rates for retail figures, computing trend direction and scenario insights from user-supplied sold and returned unit counts.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-retail-unit-return-trend?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/unit-return-rate-ordered-trend-analysis-ffa93210
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-Ei-tWYcRoDw_z5yO2kXo

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 unit-return-rate-ordered-trend-analysis-ffa93210 -d '<json body>'
```

Example prompt: Can you run an ordered trend analysis on my unit return rate? Here are my data points: Period 1 sold 200 units with 10 returned, Period 2 sold 220 units with 14 returned, Period 3 sold 210 units with 16 returned, Period 4 sold 230 units with 20 returned — I want to see if returns are trending upward.

## When to prefer this

Choose this endpoint when you have sequential retail period data (rows of sold and returned unit counts) and need a local, offline-style ordered trend computation on return rates without requiring live inventory access, account credentials, or platform integration. Ideal for quick scenario analysis and trend direction checks on user-supplied figures at minimal cost ($0.01 USDC per call).

## Known failure modes

- Fewer than 2 rows supplied — minimum of 2 data points required
- sold_units value of zero or missing — exclusiveMinimum constraint will reject zero
- returned_units exceeds sold_units — may produce implausible rate values but is not schema-rejected
- More than 200 rows supplied — maxItems constraint violation
- Non-numeric values in rows — schema type validation failure
- Payment not processed — x402 payment required before response is delivered

## How this service works

Unit return rate - Ordered trend analysis: Ordered trend analysis for Unit return rate. Supplied retail figures only. Local calculation and scenario analysis; no live inventory, account access, platform fee lookup or order execution. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded ordered trend analysis deliverable.

## Output

Returns a bounded ordered trend analysis deliverable summarizing the direction and pattern of unit return rates across the supplied time-series rows, including trend indicators and scenario analysis based on the ratio of returned_units to sold_units across periods.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "returned_units",
     "sold_units"
    ],
    "properties": {
     "sold_units": {
      "type": "number",
      "default": 100,
      "maximum": 1000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     },
     "returned_units": {
      "type": "number",
      "default": 5,
      "maximum": 1000000000000,
      "minimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "sold_units": 100,
     "returned_units": 5
    },
    {
     "sold_units": 110.00000000000001,
     "returned_units": 5.5
    },
    {
     "sold_units": 100,
     "returned_units": 5
    },
    {
     "sold_units": 110.00000000000001,
     "returned_units": 5.5
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/unit-return-rate-ordered-trend-analysis-ffa93210/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)