# Inventory Sell-Through Adjacent Period Changes

> Inventory Sell-Through 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 2026-10-24).

Calculates period-over-period changes in inventory sell-through rate across adjacent time periods from supplied retail figures.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-retail-sell-through-period-changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/inventory-sell-through-adjacent-period-changes-1989420b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HcXuxNAm92oJNCCkhhvAc

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 inventory-sell-through-adjacent-period-changes-1989420b -d '<json body>'
```

Example prompt: Calculate the adjacent period changes in inventory sell-through for these four periods: period 1 had 80 units sold and 20 ending units, period 2 had 88 sold and 22 ending, period 3 had 80 sold and 20 ending, period 4 had 88 sold and 22 ending.

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.01 USDC) local computation of period-over-period sell-through rate changes from raw retail unit figures. It is ideal for scenario analysis and planning workflows where you supply your own data and need adjacent period deltas without requiring live inventory system access, platform integrations, or order execution capabilities.

## Known failure modes

- Fewer than 2 rows provided — minItems:2 is required for adjacent comparison
- sold_units or ending_units missing from any row — both are required fields
- Values exceed maximum of 1,000,000,000,000 causing schema validation failure
- Non-numeric values passed for sold_units or ending_units
- More than 200 rows supplied exceeding maxItems limit
- Payment of 0.01 USDC not successfully processed before result is returned

## How this service works

Inventory sell-through - Adjacent period changes: Adjacent period changes for Inventory sell-through. 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 adjacent period changes deliverable.

## Output

Returns a bounded deliverable containing the calculated adjacent period changes in sell-through rate for each consecutive pair of input periods, derived from the supplied sold_units and ending_units values. No live inventory data, platform fees, or account access is included — results are based purely on the local calculation of provided figures.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "sold_units",
     "ending_units"
    ],
    "properties": {
     "sold_units": {
      "type": "number",
      "default": 80,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "ending_units": {
      "type": "number",
      "default": 20,
      "maximum": 1000000000000,
      "minimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "sold_units": 80,
     "ending_units": 20
    },
    {
     "sold_units": 88,
     "ending_units": 22
    },
    {
     "sold_units": 80,
     "ending_units": 20
    },
    {
     "sold_units": 88,
     "ending_units": 22
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/inventory-sell-through-adjacent-period-changes-1989420b/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)