# Expected Critical Damage Calculator

> Expected Critical Damage Calculator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-03).

Calculates the expected average damage output from a combination of base damage, critical hit chance, and critical hit multiplier.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/critical-damage-calculator?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/expected-critical-damage-calculator-a603734f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fp2muVS4ZPii_7qqz8IZ8

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 expected-critical-damage-calculator-a603734f -d '<json body>'
```

Example prompt: What's my expected average damage if my base hit does 150 damage, I have a 25% crit chance, and my crit multiplier is 2.5x?

## When to prefer this

Use this endpoint when you need a quick, reliable computation of expected damage factoring in crit chance and crit multiplier — ideal for game design balancing, character build comparisons, or any scenario where you want the statistically expected damage value rather than a simulation. It is lightweight, deterministic, and inexpensive at $0.01 per call.

## Known failure modes

- Missing or non-numeric input fields may return validation errors
- Crit chance values outside 0–1 range may produce nonsensical results
- Crit multiplier below 1 would imply critical hits deal less damage than normal hits
- Server errors may return 5xx responses with no damage result

## How this service works

Expected critical damage: Calculate expected damage from crit chance and critical multiplier.

## Output

Returns the expected average damage value computed as: base_damage × (1 + crit_chance × (crit_multiplier - 1)), giving a single numeric result representing the statistically expected damage per hit accounting for the probability and magnitude of critical strikes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "damage": {
   "type": "number",
   "default": 100
  },
  "crit_chance": {
   "type": "number",
   "default": 0.2
  },
  "crit_multiplier": {
   "type": "number",
   "default": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/expected-critical-damage-calculator-a603734f/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)