# Spawn Rate Calculator

> Spawn Rate 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 number of spawns over a given duration based on a fixed spawn interval and count

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/spawn-rate-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/spawn-rate-calculator-4b617072
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9kxTOCjsGg1D6trS9wrmL

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 spawn-rate-calculator-4b617072 -d '<json body>'
```

Example prompt: How many total spawns should I expect over a 120-second encounter if enemies spawn every 8 seconds?

## When to prefer this

Use this endpoint when you need a fast, deterministic calculation of spawn counts from interval and duration inputs — ideal for game design tooling, encounter planning, or any system where spawn timing is defined by a fixed interval over a period. Prefer this over manual math when automating encounter generation pipelines or validating game balance parameters.

## Known failure modes

- Zero or negative interval_seconds causing division-by-zero or invalid result
- Missing required fields defaulting to preset values that may not match user intent
- Non-numeric input values causing schema validation errors
- Very large duration or very small interval producing unexpectedly large spawn counts

## How this service works

Spawn rate calculator: Calculate expected spawns over a period from interval and count.

## Output

Returns the expected number of spawn events that occur within the given duration, calculated from the spawn interval and duration in seconds. Likely includes the computed count and possibly intermediate rate values.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "duration_seconds": {
   "type": "number",
   "default": 120
  },
  "interval_seconds": {
   "type": "number",
   "default": 8
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/spawn-rate-calculator-4b617072/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)