# 8-bit SFX Generator – Mutate (SFXR Parameter Perturbation)

> 8-bit SFX Generator – Mutate (SFXR Parameter Perturbation) is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Generates nearby 8-bit sound effect variations by mutating a known-good sfxr seed's parameters (classic sfxr mutate)

## Facts

- Endpoint: GET https://x402.professorsausages.com/sfx/mutate
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/8-bit-sfx-generator-mutate-sfxr-parameter-perturbation-4f5e6c0f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2kL2VlRrvNQO1wJry8uOs

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 8-bit-sfx-generator-mutate-sfxr-parameter-perturbation-4f5e6c0f
```

Example prompt: I have an sfxr seed for a coin-pickup sound effect and I want a few nearby variations — can you mutate it using the sfxr parameter perturbation approach to give me some close but different 8-bit blips?

## When to prefer this

Use this endpoint when you already have a known-good sfxr seed and want to explore nearby sonic variations through parameter perturbation — ideal for procedural audio in retro/indie games where you need multiple similar sound effects (e.g. different coin pickup sounds). Prefer over a fresh-generation endpoint when you want to stay close to a target sound rather than generating something completely new.

## Known failure modes

- Missing or invalid input seed object returns a 400 or error response
- Seed parameters outside valid sfxr ranges may produce silence or unexpected audio
- Payment not included or insufficient USDC triggers x402 payment-required response
- Network timeout on the hosted endpoint returns a 5xx error
- Malformed JSON input schema results in a validation error

## How this service works

Mutate a known-good seed's sound (classic sfxr mutate) — nearby variations by parameter perturbation

## Output

Returns a mutated 8-bit sound effect audio output generated by perturbing the input sfxr seed's parameters, producing a nearby variation in the sfxr sound space; the response is a new chiptune-style sound effect close to but not identical to the original seed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/8-bit-sfx-generator-mutate-sfxr-parameter-perturbation-4f5e6c0f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)