Takes up to 30 prompts, each with an id and its text (total up to 10,000 charact
Takes up to 30 prompts, each with an id and its text (total up to 10,000 characters), and returns one audio file per prompt in telephone format: 8 kHz mono WAV in 16-bit PCM, G.711 A-law (Europe) or ยต-law (North America), or MP3 for preview. Files are named after the ids so they can be dropped into a phone system. Short silence is added at start and end, as phone systems expect; the voice is selectable per language (English, German, Spanish, French, Italian, Dutch, Japanese).
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://medien.halowerk.com/v1/phone-prompts
| Category | Image and media |
|---|---|
| Provider host | medien.halowerk.com |
| Networks | eip155:8453 |
| 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 |
|---|---|---|---|---|
| 2026-10-31 | valid payment request | 402 | $0.07 | 1054 ms |
Example input (from the provider)
{
"body": {
"format": "alaw",
"language": "de",
"prompts": [
{
"id": "willkommen",
"text": "Willkommen bei der Musterfirma. F\u00fcr den Vertrieb dr\u00fccken Sie die Eins, f\u00fcr den Service die Zwei."
},
{
"id": "warteschleife",
"text": "Bitte haben Sie einen Moment Geduld, Sie werden gleich verbunden."
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"format": {
"default": "wav_8k",
"enum": [
"wav_8k",
"ulaw",
"alaw",
"mp3"
],
"type": "string"
},
"language": {
"enum": [
"en",
"de",
"es",
"fr",
"it",
"nl",
"ja"
],
"type": "string"
},
"padding_seconds": {
"default": 0.3,
"maximum": 2,
"minimum": 0,
"type": "number"
},
"prompts": {
"items": {
"additionalProperties": false,
"properties": {
"id": {
"pattern": "^[a-zA-Z0-9_-]{1,40}$",
"type": "string"
},
"text": {
"maxLength": 1500,
"minLength": 1,
"type": "string"
}
},
"required": [
"id",
"text"
],
"type": "object"
},
"maxItems": 30,
"minItems": 1,
"type": "array"
},
"voice": {
"maxLength": 60,
"type": "string"
}
},
"required": [
"prompts",
"language"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}