# Return Processing Cost Per Case – Adjacent Period Changes

> Return Processing Cost Per Case – Adjacent Period Changes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Computes adjacent period changes in return processing cost per case from supplied retail labour, postage, and other cost data across up to 200 records.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-return-processing-cost-period-changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/return-processing-cost-per-case-adjacent-period-changes-08be7077
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NLrhXgQaoqrsvwEwtH8nB

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 return-processing-cost-per-case-adjacent-period-changes-08be7077 -d '<json body>'
```

Example prompt: Can you calculate the adjacent period changes in our return processing cost per case? Here's our data for 4 periods: period 1 had labour cost 100, postage cost 50, other cost 20, and 10 processed returns; period 2 had labour 110, postage 55, other 22, and 11 returns; period 3 had labour 100, postage 50, other 20, and 10 returns; period 4 had labour 110, postage 55, other 22, and 11 returns.

## When to prefer this

Choose this endpoint when you need period-over-period change analysis specifically for retail return processing cost per case, broken down by labour, postage, and other cost components. It is ideal for retail operations teams tracking efficiency changes in returns handling over consecutive time periods, with a simple per-call pricing model and no platform subscription required.

## Known failure modes

- Fewer than 2 rows supplied (minItems:2 violated) — request rejected
- processed_returns value of zero supplied (exclusiveMinimum:0 violated) — causes division error
- Cost field values exceeding 1,000,000,000,000 — schema validation failure
- Malformed JSON body or missing required fields — request rejected
- Payment not attached or insufficient USDC — 402 payment required error

## How this service works

Return processing cost per case - Adjacent period changes: Adjacent period changes for Return processing cost per case. 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 adjacent period changes report.

## Output

A bounded report showing adjacent period changes in return processing cost per case, derived from the supplied rows of labour cost, postage cost, other cost, and processed return counts — covering up to 200 records with period-to-period deltas calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "labour_cost",
     "postage_cost",
     "other_cost",
     "processed_returns"
    ],
    "properties": {
     "other_cost": {
      "type": "number",
      "default": 20,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "labour_cost": {
      "type": "number",
      "default": 100,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "postage_cost": {
      "type": "number",
      "default": 50,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "processed_returns": {
      "type": "number",
      "default": 10,
      "maximum": 1000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "other_cost": 20,
     "labour_cost": 100,
     "postage_cost": 50,
     "processed_returns": 10
    },
    {
     "other_cost": 22,
     "labour_cost": 110.00000000000001,
     "postage_cost": 55.00000000000001,
     "processed_returns": 11
    },
    {
     "other_cost": 20,
     "labour_cost": 100,
     "postage_cost": 50,
     "processed_returns": 10
    },
    {
     "other_cost": 22,
     "labour_cost": 110.00000000000001,
     "postage_cost": 55.00000000000001,
     "processed_returns": 11
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/return-processing-cost-per-case-adjacent-period-changes-08be7077/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)