# Landed Unit Cost – Adjacent Period Changes

> Landed Unit Cost – 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 2026-10-18).

Calculates adjacent period-over-period changes in landed unit cost (goods cost + freight + duty + other costs) across multiple retail periods, returning cost breakdown deltas and percentage changes.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-retail-landed-unit-cost-period-changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/landed-unit-cost-adjacent-period-changes-152d9703
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4GdsvRH_T7b6_QCR2v0Tb

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 landed-unit-cost-adjacent-period-changes-152d9703 -d '<json body>'
```

Example prompt: Show me the adjacent period changes in my landed unit cost for these two periods: Period 1 had goods cost $1000, freight $100, duty $50, other costs $20, and 100 units; Period 2 had goods cost $1100, freight $110, duty $55, other costs $22, and 110 units.

## When to prefer this

Choose this endpoint when you need a fast, local calculation of how landed unit cost components changed between consecutive retail periods, without needing live inventory data, platform fee lookups, or order execution. Ideal for scenario planning, finance reporting, or supply chain cost drift analysis where you already have the raw cost figures and unit counts.

## Known failure modes

- Fewer than 2 rows supplied — minimum 2 periods required for adjacency calculation
- units field is zero or missing — must be a positive non-zero number to compute per-unit cost
- Cost fields contain negative values — all cost inputs must be >= 0
- More than 200 rows submitted — exceeds maxItems limit
- Malformed JSON or missing required fields (goods_cost, freight, duty, other_costs, units) returns validation error
- Payment not attached or insufficient USDC — x402 payment required per call

## How this service works

Landed unit cost - Adjacent period changes: Adjacent period changes for Landed unit cost. 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 structured breakdown of adjacent period-over-period changes in landed unit cost, including absolute and percentage deltas for each cost component (goods cost, freight, duty, other costs) and the overall landed unit cost across consecutive period pairs supplied in the input rows.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "goods_cost",
     "freight",
     "duty",
     "other_costs",
     "units"
    ],
    "properties": {
     "duty": {
      "type": "number",
      "default": 50,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "units": {
      "type": "number",
      "default": 100,
      "maximum": 1000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     },
     "freight": {
      "type": "number",
      "default": 100,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "goods_cost": {
      "type": "number",
      "default": 1000,
      "maximum": 1000000000000,
      "minimum": 0
     },
     "other_costs": {
      "type": "number",
      "default": 20,
      "maximum": 1000000000000,
      "minimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "duty": 50,
     "units": 100,
     "freight": 100,
     "goods_cost": 1000,
     "other_costs": 20
    },
    {
     "duty": 55.00000000000001,
     "units": 110.00000000000001,
     "freight": 110.00000000000001,
     "goods_cost": 1100,
     "other_costs": 22
    },
    {
     "duty": 50,
     "units": 100,
     "freight": 100,
     "goods_cost": 1000,
     "other_costs": 20
    },
    {
     "duty": 55.00000000000001,
     "units": 110.00000000000001,
     "freight": 110.00000000000001,
     "goods_cost": 1100,
     "other_costs": 22
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/landed-unit-cost-adjacent-period-changes-152d9703/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)