# Unit Return Rate Record Ranking

> Unit Return 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 2026-10-27).

Ranks a list of retail records by their unit return rate (returned units / sold units), returning a computed ranking without live inventory or platform access.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-retail-unit-return-rank?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-record-ranking-07847e3d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WcLuX6hXC0c9BNqNi8pkp

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-record-ranking-07847e3d -d '<json body>'
```

Example prompt: I have four product lines with the following sold and returned unit counts — Product A: 500 sold, 25 returned; Product B: 200 sold, 30 returned; Product C: 800 sold, 16 returned; Product D: 300 sold, 45 returned — can you rank them by unit return rate from worst to best?

## When to prefer this

Choose this endpoint when you have a batch of retail records with sold and returned unit counts and need them ranked by return rate for comparison or reporting — ideal for local scenario analysis and benchmarking without needing live inventory access, platform connectivity, or order execution capabilities.

## Known failure modes

- Fewer than 2 rows supplied — minimum input requirement not met
- sold_units value of 0 — division by zero for return rate calculation
- Rows exceed 200 item limit — request rejected
- Missing required fields returned_units or sold_units in one or more rows
- Non-numeric values passed for unit counts

## How this service works

Unit return rate - Record ranking: Record ranking 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 record ranking deliverable.

## Output

A ranked list of the submitted retail records ordered by computed unit return rate (returned_units / sold_units), allowing the caller to identify which rows have the highest and lowest return rates relative to each other.

## 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-record-ranking-07847e3d/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)