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Rengi Forge Audio Variations
x402
Rengi Forge Audio Variations is a paid API for AI agents from rengi.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-22).
Generates 2–12 pitch-and-volume variations of a single sound effect to prevent repetitive audio in games
Price / call$0.1
Success—
StatusUnknown
How this service works
Audio tools: Make 2-12 variations of one sound effect with small pitch and volume changes, so repeated footsteps or hits do not sound copy-pasted. Returns each file and a ZIP. Full schema: https://rengi.dev/v1/audio-tools/schema
Output
Returns 2–12 individual audio files (OGG, WAV, or MP3) each with randomized pitch and volume offsets within the specified ranges, plus a ZIP archive containing all variations. A fixed seed ensures reproducible results.
Example use cases
Footstep variation pack for game
“I have a single footstep WAV and I need 10 variations so they don't sound copy-pasted when the player walks. Can you create them with up to 2 semitones of pitch variation and 3 dB volume difference, output as OGG?”
Randomized hit sound for combat game
“Take this sword hit sound at this URL and make 6 variations with 4 semitones of pitch range and 5 dB of volume range — return them as WAV files so I can drop them straight into Unity.”
UI click sounds diversification
“I've got a single MP3 button click sound and I want 5 slightly different versions of it — small pitch changes up to 1 semitone and volume shifts up to 2 dB — can you generate those as OGG files?”
Technical details
Endpoint
POSThttps://rengi.dev/v1/audio-tools/variations?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to eliminate repetitive audio in games or interactive media by producing multiple slightly-differing takes of a single sound effect. It is purpose-built for game audio pipelines and is preferable to general audio processing APIs when the specific need is pitch-and-volume variation packs, especially when you need a reproducible seed and a ready-to-use ZIP.
Side effects
- Missing both audio and audioUrl fields — returns validation error
- Count outside 2–12 range — rejected with schema error
- Unsupported audio format submitted as base64 — returns format error
- pitchSemitones or volumeDb outside allowed range — validation failure
- Malformed base64 audio data — decoding error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mono | boolean | |
| seed | integer | |
| audio | string | Audio file as base64 (wav, mp3, ogg, flac, m4a). |
| count | integer | |
| format | string | |
| audioUrl | string | Audio file URL. |
| volumeDb | number | Max volume change either way. |
| pitchSemitones | number | Max pitch change either way. |
Tags
x402
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