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API-Endpunkte

Musik generieren

POST/v2/generate

POST /v2/generate

Generate music using AI. Supports both inspiration mode (text description) and custom mode (lyrics, style, title).

POSThttps://udioapi.pro/api/v2/generate

tips

Two Generation Modes:

  • Inspiration Mode: Use gpt_description_prompt to generate music from a text description
  • Custom Mode: Use prompt, style, and title for detailed control

Image to Music (Inspiration Mode only): Pass up to 5 publicly accessible image URLs in image_urls; the music reads the mood of the pictures and can be combined with gpt_description_prompt. Image input adds 1 credit per request and is silently ignored in Custom Mode.

Model Selection: Current models are chirp-v6 (12 credits), chirp-v6-mini (10 credits) and chirp-v6-wild (12 credits). Legacy identifiers are still accepted and billed at their historical price: chirp-v5 / chirp-v5-5 are served by chirp-v6, while chirp-v3-5, chirp-v4-0, chirp-v4-5 and chirp-v4-5-plus are served by chirp-v6-mini. Results always report the model that actually produced the audio in model_name.

Rejected requests are refunded: if a request is rejected during validation you receive 422 (fix the parameters) or 500 (temporary, retry later) with data.refunded; tasks that fail after being accepted are marked FAILED and refunded automatically.

requestHeaders

namerequireddescription
nameAuthorizationrequiredyesdescriptionBearer token for authentication
nameContent-Typerequiredyesdescriptionapplication/json

requestBody

Request body supports two modes: Inspiration Mode or Custom Mode

Inspiration Mode

Generate music from a text description

paramNameparamTyperequireddescriptionexample
paramNamegpt_description_promptparamTypestringrequiredyesdescriptionText description of the music you want to generate. Max length: 3000 characters (longer input is truncated). Optional when image_urls is provided.exampleA upbeat pop song about summer vacation with catchy melody

Custom Mode

Generate music with custom lyrics, style, and title

paramNameparamTyperequireddescriptionexample
paramNamepromptparamTypestringrequiredyesdescriptionCustom lyrics or detailed prompt. Max length: 5000 characters for every model (longer input is truncated).exampleVerse 1: Walking down the street, feeling so free...
paramNamestyleparamTypestringrequirednodescriptionMusical style/genre. Max length: 1000 characters for every model (longer input is truncated).examplepop, upbeat, electronic, 120 bpm
paramNametitleparamTypestringrequirednodescriptionSong title. Max length: 80 characters (longer input is truncated).exampleSummer Dreams
paramNametagsparamTypestringrequirednodescriptionNegative tags to avoid in generationexamplesad, slow
paramNamedurationparamTypenumberrequirednodescriptionZiellänge in Sekunden, nur im benutzerdefinierten Modus. Wird von chirp-v6, chirp-v6-mini und chirp-v6-wild sowie von den älteren Kennungen, die über diese Modelle laufen, berücksichtigt. Zulässig sind Werte von 10 bis 360. Bei fehlenden oder ungültigen Werten wird keine Ziellänge gesendet und das Modell bemisst die Länge anhand des Songtexts; die ältere Kennung chirp-v5-5 verwendet standardmäßig 20. Es handelt sich um einen Zielwert, keine exakte Länge: Ist der Wert kürzer, als der Text benötigt, kann der Track enden, bevor alle Zeilen gesungen sind. Wird im Inspirationsmodus und von /v2/extend ignoriert.example20

commonParams

paramNameparamTyperequireddescriptionexample
paramNamemodelparamTypestringrequirednodescriptionModel to use. Current options: 'chirp-v6' (12 credits), 'chirp-v6-mini' (10 credits), 'chirp-v6-wild' (12 credits). Legacy identifiers 'chirp-v3-5' (5), 'chirp-v4-0' (8), 'chirp-v4-5' (10), 'chirp-v4-5-plus' (10), 'chirp-v5' (12) and 'chirp-v5-5' (12) keep their historical price and are served by chirp-v6 (chirp-v5 / chirp-v5-5) or chirp-v6-mini (all others). When omitted the request is billed at the 5-credit base tier and served by chirp-v6-mini.examplechirp-v6
paramNameimage_urlsparamTypestring[]requirednodescriptionImage to Music. Up to 5 publicly accessible image URLs (JPEG, JPG, PNG or WEBP, max 10MB each). The generated track reflects the mood of the images and can be steered with gpt_description_prompt. Adds 1 credit per request. Only applies to Inspiration Mode; silently ignored in Custom Mode.example["https://cdn.example.com/sunset-beach.jpg"]
paramNamemake_instrumentalparamTypebooleanrequirednodescriptionGenerate instrumental music without vocalsexamplefalse
paramNamegenderparamTypestringrequirednodescriptionVocal gender preference. Use 'male' or 'female'examplefemale
paramNamestyle_weightparamTypenumberrequirednodescriptionStrength of adherence to style. Range 0–1, up to 2 decimalsexample0.65
paramNameweirdness_constraintparamTypenumberrequirednodescriptionControls creative deviation. Range 0–1, up to 2 decimalsexample0.65
paramNameaudio_weightparamTypenumberrequirednodescriptionBalance weight for audio features. Range 0–1, up to 2 decimalsexample0.65

responses

json
{
  "code": 200,
  "message": "success",
  "workId": "gen2abc123def456bksv",
  "data": {
    "task_id": "gen2abc123def456bksv"
  }
}
json
{
  "code": 400,
  "message": "No body provided"
}
json
{
  "code": 401,
  "message": "No API key provided in Authorization header"
}
json
{
  "code": 422,
  "message": "Request rejected: title must be 80 characters or fewer. Your credits have been refunded.",
  "data": {
    "task_id": "gen2abc123def456bksv",
    "refunded": true
  },
  "workId": "gen2abc123def456bksv"
}
json
{
  "code": 500,
  "message": "The generation request could not be processed right now. Your credits have been refunded. Please retry later.",
  "data": {
    "task_id": "gen2abc123def456bksv",
    "refunded": true
  },
  "workId": "gen2abc123def456bksv"
}

codeExamples

curl
curl -X POST "https://udioapi.pro/api/v2/generate" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "chirp-v6",
    "prompt": "Verse 1: Walking down the street, feeling so free\nChorus: Summer dreams are calling me",
    "style": "pop, upbeat, electronic, 120 bpm",
    "title": "Summer Dreams",
    "duration": 20,
    "make_instrumental": false,
    "gender": "female",
    "style_weight": 0.65,
    "weirdness_constraint": 0.65,
    "audio_weight": 0.65
  }'
javascript
const response = await fetch('https://udioapi.pro/api/v2/generate', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model: 'chirp-v6-mini',
    gpt_description_prompt: 'A upbeat pop song about summer vacation with catchy melody',
    make_instrumental: false,
    gender: 'female',
    style_weight: 0.65,
    weirdness_constraint: 0.65,
    audio_weight: 0.65
  })
});

const data = await response.json();
console.log(data);
curl
curl -X POST "https://udioapi.pro/api/v2/generate" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "chirp-v6",
    "image_urls": [
      "https://cdn.example.com/sunset-beach.jpg",
      "https://cdn.example.com/city-lights.png"
    ],
    "gpt_description_prompt": "Warm lo-fi track that matches the mood of these photos",
    "make_instrumental": true
  }'
javascript
const response = await fetch('https://udioapi.pro/api/v2/generate', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model: 'chirp-v6',
    prompt: 'Verse 1: Walking down the street, feeling so free\nChorus: Summer dreams are calling me',
    style: 'pop, upbeat, electronic, 120 bpm',
    title: 'Summer Dreams',
    duration: 20,
    make_instrumental: false,
    gender: 'female',
    style_weight: 0.65,
    weirdness_constraint: 0.65,
    audio_weight: 0.65
  })
});

const data = await response.json();
console.log(data);