# SignalDesk AI Break-Even Calculator

> SignalDesk AI Break-Even Calculator is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Calculates the break-even point in units given fixed costs, variable cost per unit, and unit selling price

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/finance/break-even?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-break-even-calculator-3ff585bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tbFcu3NN3fvxpvJf2FUy2

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 signaldesk-ai-break-even-calculator-3ff585bb -d '<json body>'
```

Example prompt: I have fixed costs of $50,000, a unit selling price of $25, and a variable cost per unit of $15 — how many units do I need to sell to break even?

## When to prefer this

Choose this endpoint when you need a quick, server-side break-even computation from raw cost inputs without building the formula yourself. It is ideal for AI agents embedded in financial planning, entrepreneurship, or pricing workflows where a lightweight, paid API call is acceptable and the user needs both exact and rounded unit counts instantly.

## Known failure modes

- Missing required fields (fixed_cost, unit_price, or variable_cost) returns an error
- unit_price equal to or less than variable_cost results in a mathematically undefined or infinite break-even (division by zero or negative contribution margin)
- Values exceeding the maximum of 1,000,000,000,000 are rejected by schema validation
- Non-numeric input types are rejected
- Payment failure (402) if USDC micropayment is not fulfilled

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

Returns a JSON object with the break-even quantity expressed as both whole units (ceiling) and fractional units (exact decimal), plus a disclaimer that the result is a floating-point calculation from supplied inputs only and does not constitute tax, investment, or lending advice.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "fixed_cost": {
   "type": "number",
   "maximum": 1000000000000,
   "minimum": 0,
   "description": "Amount in one consistent currency; floating-point calculation, not an accounting ledger."
  },
  "unit_price": {
   "type": "number",
   "maximum": 1000000000000,
   "minimum": 0,
   "description": "Amount in one consistent currency; floating-point calculation, not an accounting ledger."
  },
  "variable_cost": {
   "type": "number",
   "maximum": 1000000000000,
   "minimum": 0,
   "description": "Amount in one consistent currency; floating-point calculation, not an accounting ledger."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "notice": "Calculation from supplied inputs only; no tax, investment or lending advice.",
  "whole_units": 100,
  "fractional_units": 100
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-break-even-calculator-3ff585bb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)