Audio tools
Audio tools: Turn music or ambience into a seamless loop: cuts at zero crossings and crossfades the end into the start with an equal-power curve. Returns the loop, a 3x preview and loop points in samples. Full schema: https://rengi.dev/v1/audio-tools/schema
Answeringour last check, 2026-10-21
1 of 1checks answered this week
925 msmedian answer time
$0.1listed price per call
$0.1price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://rengi.dev/v1/audio-tools/loop
| Category | Image and media |
|---|---|
| Provider host | rengi.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.1 | 925 ms |
Example input (from the provider)
{
"body": {
"audioUrl": "https://rengi.dev/samples/ambience.wav",
"crossfadeMs": 250
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"audio": {
"description": "Audio file as base64 (wav, mp3, ogg, flac, m4a).",
"type": "string"
},
"audioUrl": {
"description": "Audio file URL.",
"format": "uri",
"type": "string"
},
"crossfadeMs": {
"default": 120,
"maximum": 2000,
"minimum": 5,
"type": "number"
},
"endSec": {
"minimum": 0,
"type": "number"
},
"format": {
"default": "ogg",
"enum": [
"ogg",
"wav",
"mp3"
],
"type": "string"
},
"mono": {
"default": false,
"type": "boolean"
},
"startSec": {
"minimum": 0,
"type": "number"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"durationSec": {
"type": "number"
},
"file": {
"type": "string"
},
"loopEndSample": {
"type": "number"
},
"loopStartSample": {
"type": "number"
},
"preview": {
"description": "The loop played three times, to listen for the join.",
"type": "string"
},
"sampleRate": {
"type": "number"
},
"waveform": {
"type": "string"
}
},
"required": [
"file",
"preview",
"waveform",
"loopStartSample",
"loopEndSample",
"sampleRate",
"durationSec"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}