Skip to main content
POST
/
v1
/
music
/
generations
curl --request POST \
  --url https://api.apimart.ai/v1/music/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "flowmusic",
    "title": "My Song",
    "sound_prompt": "upbeat pop music with piano",
    "bpm": "120",
    "length": 60
  }'
import requests

url = "https://api.apimart.ai/v1/music/generations"

payload = {
    "model": "flowmusic",
    "title": "My Song",
    "sound_prompt": "upbeat pop music with piano",
    "bpm": "120",
    "length": 60
}

headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
const url = "https://api.apimart.ai/v1/music/generations";

const payload = {
  model: "flowmusic",
  title: "My Song",
  sound_prompt: "upbeat pop music with piano",
  bpm: "120",
  length: 60
};

const headers = {
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01K8AYYM6R03TGZ3Q2P0TZVNPX"
    }
  ]
}
{
  "error": {
    "message": "sound_prompt and lyrics cannot both be empty",
    "type": "invalid_request",
    "param": "",
    "code": "invalid_request"
  }
}
{
  "error": {
    "message": "Insufficient balance",
    "type": "invalid_request",
    "param": "",
    "code": "quota_not_enough"
  }
}
{
  "error": {
    "message": "Current group capacity is saturated, please retry later",
    "type": "rate_limit_error",
    "param": "",
    "code": "rate_limit_error"
  }
}
curl --request POST \
  --url https://api.apimart.ai/v1/music/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "flowmusic",
    "title": "My Song",
    "sound_prompt": "upbeat pop music with piano",
    "bpm": "120",
    "length": 60
  }'
import requests

url = "https://api.apimart.ai/v1/music/generations"

payload = {
    "model": "flowmusic",
    "title": "My Song",
    "sound_prompt": "upbeat pop music with piano",
    "bpm": "120",
    "length": 60
}

headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
const url = "https://api.apimart.ai/v1/music/generations";

const payload = {
  model: "flowmusic",
  title: "My Song",
  sound_prompt: "upbeat pop music with piano",
  bpm: "120",
  length: 60
};

const headers = {
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01K8AYYM6R03TGZ3Q2P0TZVNPX"
    }
  ]
}
{
  "error": {
    "message": "sound_prompt and lyrics cannot both be empty",
    "type": "invalid_request",
    "param": "",
    "code": "invalid_request"
  }
}
{
  "error": {
    "message": "Insufficient balance",
    "type": "invalid_request",
    "param": "",
    "code": "quota_not_enough"
  }
}
{
  "error": {
    "message": "Current group capacity is saturated, please retry later",
    "type": "rate_limit_error",
    "param": "",
    "code": "rate_limit_error"
  }
}

Authentication

Authorization
string
required
All endpoints require Bearer Token authenticationGet your API Key:Visit the API Key management page to get your API KeyAdd it to the request header:
Authorization: Bearer YOUR_API_KEY

Request Parameters

model
string
required
Model name, must be "flowmusic" (case-insensitive)
sound_prompt
string
Music style or sound description promptExample: "upbeat pop music with piano"
sound_prompt and lyrics cannot both be empty (at least one is required). Each request generates only one track.
lyrics
string
Lyrics text; you can first obtain lyrics from the Generate Lyrics endpoint and fill them in hereExample: "[Verse 1]\nEven the longest night turns to dawn\n..."
title
string
Title of the generated music
bpm
string
BPM (beats per minute), must be ≥ 1Example: "120"
length
integer
Generation duration (seconds)Supported range: 1 ~ 240 seconds
seed
string
Random seed, used to reproduce results
Passing the same seed value with the same request produces similar results, but exact reproducibility is not guaranteed.

Response

code
integer
Response status code, 200 on success
data
array
Array of returned data

Use Cases

Scenario 1: Generate from a style prompt only

{
  "model": "flowmusic",
  "title": "My Song",
  "sound_prompt": "upbeat pop music with piano",
  "bpm": "120",
  "length": 60
}

Scenario 2: Lyrics + style to a full song

{
  "model": "flowmusic",
  "title": "Perseverance",
  "lyrics": "[Verse 1]\nEven the longest night turns to dawn\n...",
  "sound_prompt": "energetic rock with electric guitar",
  "length": 120
}
Query Task ResultsMusic generation is an asynchronous task; a task_id is returned after submission. Use the Get Task Status endpoint to query generation progress and results.

Completed Task Result Example

Query response example (GET /v1/music/tasks/{task_id}):
{
  "code": 200,
  "data": {
    "id": "task_01KWXVB61E28THHFBSYXWA4FAJ",
    "status": "completed",
    "progress": 100,
    "created": 1783413184,
    "completed": 1783413236,
    "actual_time": 52,
    "cost": 0.048,
    "credits_cost": 0.48,
    "result": {
      "music": [
        {
          "clip_id": "a41aade4-993e-4d28-b56f-d97e7ef7167c",
          "title": "Regression Song",
          "duration_seconds": "181.70666667",
          "create_time": "2026-07-07T08:33:32.854073Z",
          "lyrics": "[Verse 1]\nWaking up to the morning light,\n...",
          "lyrics_id": "c302d603-81b6-552f-8122-e512928d6aa1",
          "lyrics_timing_markers": [[10, 12], [212, 36]],
          "audio_url": "https://cdn.apimart.ai/audio/flowmusic_a41aade4.m4a",
          "wav_url": "https://cdn.apimart.ai/audio/flowmusic_a41aade4.wav",
          "image_url": "https://cdn.apimart.ai/image/flowmusic_a41aade4_cover.jpg"
        }
      ]
    }
  }
}