# Break-even Sales Units – Before and After Comparison

> Break-even Sales Units – Before and After Comparison 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).

Compares two sets of cost/price inputs (before and after) and reports the absolute and relative change in break-even sales units.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-break-even-units-compare?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/break-even-sales-units-before-and-after-comparison-5a8dd215
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n_PFsiV3t4NSEY2-uIDBE

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 break-even-sales-units-before-and-after-comparison-5a8dd215 -d '<json body>'
```

Example prompt: Compare my break-even units before and after a pricing change: before I had fixed costs of $5,000, a unit price of $20, and variable cost per unit of $12; after, fixed costs are $5,500, unit price is $22, and variable cost per unit is $13.20 — show me the absolute and relative change.

## When to prefer this

Choose this endpoint when you need a structured, formula-backed comparison of break-even unit quantities across exactly two scenarios (before and after a business change), and want absolute and relative delta metrics in a single call. It is ideal for scenario analysis, cost-change evaluations, and management reporting where the inputs are known figures rather than live financial data. Prefer it over single-point break-even calculators when the delta between two states is the key question.

## Known failure modes

- Unit price of zero or negative causes a division error (exclusiveMinimum:0 enforced by schema)
- Variable cost per unit equal to or exceeding unit price results in infinite or undefined break-even (contribution margin ≤ 0)
- Missing required fields (fixed_costs, unit_price, variable_cost_per_unit) in either before or after object causes validation error
- Values exceeding the maximum of 1,000,000,000,000 are rejected by schema
- Inconsistent currencies or time periods across inputs produce mathematically valid but economically meaningless results

## How this service works

Break-even sales units - Before and after comparison: Compare two supplied records, reporting absolute and eligible relative changes. Metric: Break-even sales units. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded before and after comparison report.

## Output

A JSON response containing the break-even units calculated for both the 'before' and 'after' input sets, the absolute difference between them, the relative (percentage) change where eligible, the formula used, the reporting units, and any limitations on the result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "after": {
   "type": "object",
   "default": {
    "unit_price": 22,
    "fixed_costs": 5500,
    "variable_cost_per_unit": 13.200000000000001
   },
   "required": [
    "fixed_costs",
    "unit_price",
    "variable_cost_per_unit"
   ],
   "properties": {
    "unit_price": {
     "type": "number",
     "default": 20,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period",
     "exclusiveMinimum": 0
    },
    "fixed_costs": {
     "type": "number",
     "default": 5000,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period"
    },
    "variable_cost_per_unit": {
     "type": "number",
     "default": 12,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period"
    }
   },
   "additionalProperties": false
  },
  "before": {
   "type": "object",
   "default": {
    "unit_price": 20,
    "fixed_costs": 5000,
    "variable_cost_per_unit": 12
   },
   "required": [
    "fixed_costs",
    "unit_price",
    "variable_cost_per_unit"
   ],
   "properties": {
    "unit_price": {
     "type": "number",
     "default": 20,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period",
     "exclusiveMinimum": 0
    },
    "fixed_costs": {
     "type": "number",
     "default": 5000,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period"
    },
    "variable_cost_per_unit": {
     "type": "number",
     "default": 12,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/break-even-sales-units-before-and-after-comparison-5a8dd215/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)