# Observed Unit Sales Velocity – Two-Input Scenario Grid

> Observed Unit Sales Velocity – Two-Input Scenario Grid is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Generates a two-input scenario grid report for observed unit sales velocity, varying sold_units and observed_days axes across supplied retail figures.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-retail-unit-sales-velocity-stress-grid?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/observed-unit-sales-velocity-two-input-scenario-grid-dc9dd45d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VGsT97hgNu-RmPejUDkLj

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 observed-unit-sales-velocity-two-input-scenario-grid-dc9dd45d -d '<json body>'
```

Example prompt: Run a two-input scenario grid for my observed unit sales velocity with a baseline of 84 sold units over 7 days — vary sold_units across 84 and 92 on the X axis and observed_days across 7 and 8 on the Y axis.

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.01 USDC) two-dimensional what-if table for unit sales velocity using your own supplied retail figures — particularly when you want to see how velocity responds to simultaneous changes in both sold units and observation window length, without needing live platform data or order execution.

## Known failure modes

- Invalid enum for field_x or field_y (must be 'sold_units' or 'observed_days')
- field_x and field_y set to the same value, producing a degenerate grid
- observed_days baseline or values_y containing zero (exclusiveMinimum constraint violated)
- values_x or values_y arrays exceeding 10 items each
- Numeric values outside allowed range causing schema validation failure
- Missing required baseline fields (sold_units or observed_days)

## How this service works

Observed unit sales velocity - Two-input scenario grid: Two-input scenario grid for Observed unit sales velocity. 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 two-input scenario grid report.

## Output

A bounded two-input scenario grid report showing computed unit sales velocity (units per day) for every combination of the supplied x-axis and y-axis values, anchored to the provided baseline of sold_units and observed_days. Up to 200 records returned, no live market data or order execution included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "field_x": {
   "enum": [
    "sold_units",
    "observed_days"
   ],
   "type": "string",
   "default": "sold_units"
  },
  "field_y": {
   "enum": [
    "sold_units",
    "observed_days"
   ],
   "type": "string",
   "default": "observed_days"
  },
  "baseline": {
   "type": "object",
   "default": {
    "sold_units": 84,
    "observed_days": 7
   },
   "required": [
    "sold_units",
    "observed_days"
   ],
   "properties": {
    "sold_units": {
     "type": "number",
     "default": 84,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "observed_days": {
     "type": "number",
     "default": 7,
     "maximum": 1000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    }
   },
   "additionalProperties": false
  },
  "values_x": {
   "type": "array",
   "items": {
    "type": "number",
    "default": 1,
    "maximum": 1000000000000,
    "minimum": -1000000000000
   },
   "default": [
    84,
    92.4
   ],
   "maxItems": 10,
   "minItems": 1
  },
  "values_y": {
   "type": "array",
   "items": {
    "type": "number",
    "default": 1,
    "maximum": 1000000000000,
    "minimum": -1000000000000
   },
   "default": [
    7,
    7.700000000000001
   ],
   "maxItems": 10,
   "minItems": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/observed-unit-sales-velocity-two-input-scenario-grid-dc9dd45d/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)