# Return Processing Cost Per Case - Sequential Input-Change Attribution (Waterfall)

> Return Processing Cost Per Case - Sequential Input-Change Attribution (Waterfall) 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).

Performs sequential input-change (waterfall) attribution analysis on retail return processing cost per case, showing how changes in labour, postage, other costs, and volume drive the overall cost difference between two periods.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-return-processing-cost-waterfall?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-sequential-input-change-attribution-f0a93c7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_962SHWQ3JL4ZeJ2tnXv9m

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-sequential-input-change-attribution-f0a93c7b -d '<json body>'
```

Example prompt: My before-period had 10 processed returns with £100 labour, £50 postage, and £20 other costs — after-period I have 11 returns with £110 labour, £55 postage, and £22 other costs. Can you run a sequential waterfall attribution to show me what drove the change in cost per return case?

## When to prefer this

Choose this endpoint when you need to decompose and explain the drivers of a change in return processing cost per case between two discrete time periods using a sequential (waterfall) attribution methodology, and your inputs are supplied retail figures (labour, postage, other costs, and return volume). It is purpose-built for retail returns cost analytics and does not require platform credentials or live data feeds.

## Known failure modes

- processed_returns value of zero rejected (exclusiveMinimum: 0)
- missing required fields (labour_cost, postage_cost, other_cost, processed_returns in either before or after object) returns validation error
- values exceeding 1,000,000,000,000 rejected by schema maximum constraint
- payment of 0.01 USDC not provided — 402 Payment Required response
- non-numeric values for cost or volume fields cause schema validation failure

## How this service works

Return processing cost per case - Sequential input-change attribution: Sequential input-change attribution 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 sequential input-change attribution report.

## Output

A bounded sequential input-change attribution (waterfall) report showing the return processing cost per case in the before and after states, and the step-by-step contribution of each input change (labour cost, postage cost, other cost, processed returns volume) to the overall delta in cost per case. No live rates, platform access, or order execution is included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "after": {
   "type": "object",
   "default": {
    "other_cost": 22,
    "labour_cost": 110.00000000000001,
    "postage_cost": 55.00000000000001,
    "processed_returns": 11
   },
   "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
  },
  "before": {
   "type": "object",
   "default": {
    "other_cost": 20,
    "labour_cost": 100,
    "postage_cost": 50,
    "processed_returns": 10
   },
   "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
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/return-processing-cost-per-case-sequential-input-change-attribution-f0a93c7b/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)