# Gross Margin Return on Inventory (GMROI) - Single Calculation

> Gross Margin Return on Inventory (GMROI) - Single Calculation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Calculates Gross Margin Return on Inventory (GMROI) from gross profit and average inventory cost inputs, returning the ratio as a local computation with no live data access.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-retail-inventory-margin-return-calculate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gross-margin-return-on-inventory-gmroi-single-calculation-55b20ba8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sK1_pkcO5QOFMibzZL443

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 gross-margin-return-on-inventory-gmroi-single-calculation-55b20ba8 -d '<json body>'
```

Example prompt: Can you calculate the gross margin return on inventory for my store? My gross profit is $5,000 and my average inventory cost is $2,500.

## When to prefer this

Use this endpoint when you need a fast, cheap, single GMROI computation from known retail figures — ideal for scenario analysis, financial modelling, or benchmarking inventory efficiency without needing live inventory system access or platform integrations. At $0.01 per call it is cost-effective for one-off or batch scripted calculations.

## Known failure modes

- Missing gross_profit or average_inventory_cost fields returns a validation error
- average_inventory_cost of zero or negative will be rejected due to exclusiveMinimum constraint
- Values outside the allowed range (±1 trillion for gross profit, >0 to 1 trillion for inventory cost) will fail validation
- Payment failure or insufficient USDC balance will prevent the calculation from executing

## How this service works

Gross margin return on inventory - Single calculation: Single calculation for Gross margin return on inventory. 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 single calculation deliverable.

## Output

Returns the computed GMROI value — a ratio representing how many dollars of gross profit are earned for each dollar invested in average inventory cost. Output is a single bounded numerical result based solely on the supplied gross profit and average inventory cost inputs, with no live data or platform integrations involved.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "object",
   "default": {
    "gross_profit": 5000,
    "average_inventory_cost": 2500
   },
   "required": [
    "gross_profit",
    "average_inventory_cost"
   ],
   "properties": {
    "gross_profit": {
     "type": "number",
     "default": 5000,
     "maximum": 1000000000000,
     "minimum": -1000000000000
    },
    "average_inventory_cost": {
     "type": "number",
     "default": 2500,
     "maximum": 1000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gross-margin-return-on-inventory-gmroi-single-calculation-55b20ba8/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)