Musikgenerierung

indie folk, fingerpicked acoustic guitar, brushed drums, warm upright bass,
soft female vocal, 90 bpm, nostalgic and unhurried

Organic downtempo psybient, 95 BPM, didgeridoo and tabla loops, soft analog
pads, forest field recordings, fretless bass, kalimba textures, meditative
dorian A minor, 8 minute slow development, warm earthy production, no vocals
instrumental

{
  "custom": true,
  "tags": "upbeat indie pop, jangly electric guitar, handclaps, group vocals, 128 bpm, bright and cheerful",
  "title": "Ship It Friday",
  "prompt": "[Verse]\nWe wrote it down on Monday morning\nHalf a plan and too much coffee\n\n[Chorus]\nShip it Friday, ship it Friday\nNothing's perfect anyway"
}

Three-second audio logo: a single bright marimba motif of four notes rising,
one soft synth swell underneath, clean modern, no vocals, ends cleanly

A heavy wooden door closing in a stone corridor, with a short natural reverb
tail

{
  "action": "cover",
  "sourceTaskId": "019ca881-9503-7270-a560-f00fc2b15785",
  "tags": "slow piano ballad, string section, intimate male vocal, 70 bpm",
  "title": "Ship It Friday (Ballad)"
}

curl -X POST https://api.api-stock.com/api/v1/generation/create \
  -H "Authorization: Bearer sk-your-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "suno",
    "input": {
      "action": "music",
      "gptDescriptionPrompt": "A slow indie folk song about leaving a harbour town at dawn, brushed drums, female vocal"
    }
  }'

{
  "model": "suno",
  "input": {
    "action": "music",
    "custom": true,
    "mv": "v5.0",
    "title": "Harbour Lights",
    "tags": "indie folk, brushed drums, warm analog",
    "prompt": "[Verse]\nThe gulls come down before the sun does\n[Chorus]\nAnd the harbour lights go out one by one",
    "makeInstrumental": false
  }
}

{
  "code": 200,
  "data": {
    "taskId": "019ca8d7-6b02-7f31-a1c4-8e5d90b7f2aa",
    "status": "finished",
    "files": [
      {
        "fileUrl": "https://storage.api-stock.com/generated/suno-4c81-a.mp3",
        "fileType": "music"
      },
      {
        "fileUrl": "https://storage.api-stock.com/generated/suno-4c81-b.mp3",
        "fileType": "music"
      }
    ],
    "output": {
      "tracks": [
        {
          "audioId": "b3d1f0a2-77ac-4e19-9c0e-1d2b3f4a5c6d",
          "title": "Harbour Lights",
          "duration": 184.6,
          "tags": "indie folk, brushed drums",
          "imageUrl": "https://cdn.example.com/cover-a.jpeg"
        },
        {
          "audioId": "c7e2a941-08bd-4f52-b3aa-9e01c2d3e4f5",
          "title": "Harbour Lights",
          "duration": 191.2,
          "tags": "indie folk, brushed drums",
          "imageUrl": "https://cdn.example.com/cover-b.jpeg"
        }
      ]
    },
    "createdTime": "2026-02-28T13:52:19.000Z"
  }
}

{
  "model": "suno",
  "input": {
    "action": "extend",
    "sourceTaskId": "019ca8d7-6b02-7f31-a1c4-8e5d90b7f2aa",
    "audioId": "b3d1f0a2-77ac-4e19-9c0e-1d2b3f4a5c6d",
    "continueAt": 120,
    "custom": true,
    "prompt": "[Bridge]\nThe tide turns over in the dark",
    "tags": "indie folk, brushed drums"
  }
}

{
  "model": "suno",
  "input": {
    "action": "cover",
    "sourceTaskId": "019ca8d7-6b02-7f31-a1c4-8e5d90b7f2aa",
    "audioId": "b3d1f0a2-77ac-4e19-9c0e-1d2b3f4a5c6d",
    "tags": "synthwave, gated reverb, 1984",
    "title": "Harbour Lights (Synth)"
  }
}

{
  "model": "suno",
  "input": {
    "action": "stems",
    "sourceTaskId": "019ca8d7-6b02-7f31-a1c4-8e5d90b7f2aa",
    "audioId": "b3d1f0a2-77ac-4e19-9c0e-1d2b3f4a5c6d",
    "stemType": "drum_kit"
  }
}

{
  "model": "suno",
  "input": {
    "action": "lyrics",
    "prompt": "A song about leaving a harbour town at dawn",
    "mv": "remi-v1"
  }
}

{
  "code": 200,
  "data": {
    "taskId": "019ca8e0-91c3-7d48-b6f0-2a7c4e19d503",
    "status": "finished",
    "output": {
      "a": {
        "title": "Harbour Lights",
        "text": "[Verse]\nThe gulls come down before the sun does",
        "tags": ["indie folk", "folk"]
      },
      "b": {
        "title": "Leaving Line",
        "text": "[Verse]\nSalt on the rope and the morning still cold",
        "tags": ["indie folk", "acoustic"]
      }
    },
    "createdTime": "2026-02-28T14:02:07.000Z"
  }
}

{
  "model": "suno",
  "input": {
    "action": "voice",
    "sourceTaskId": "019ca8d7-6b02-7f31-a1c4-8e5d90b7f2aa",
    "name": "Harbour Alto"
  }
}

const BASE = "https://api.api-stock.com/api/v1";
const KEY = process.env.API_STOCK_KEY!;

async function submit(input: Record<string, unknown>): Promise<string> {
  const res = await fetch(`${BASE}/generation/create`, {
    method: "POST",
    headers: {
      Authorization: `Bearer ${KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ model: "suno", input }),
  });
  const body = await res.json();
  if (!res.ok) throw new Error(`${body.error.code}: ${body.error.message}`);
  return body.data.taskId;
}

async function wait(taskId: string) {
  const deadline = Date.now() + 15 * 60_000;
  while (Date.now() < deadline) {
    await new Promise((r) => setTimeout(r, 8_000));
    const res = await fetch(`${BASE}/task/status/${taskId}`, {
      headers: { Authorization: `Bearer ${KEY}` },
    });
    const body = await res.json().catch(() => null);
    if (!res.ok) {
      if (res.status === 429) {
        const retryAfter = Number(res.headers.get("Retry-After") ?? 8);
        await new Promise((r) => setTimeout(r, retryAfter * 1000));
        continue;
      }
      const message = body?.error?.message ?? `${res.status} ${res.statusText}`;
      throw new Error(message);
    }
    const { data } = body;
    if (data.status === "finished") return data;
    if (data.status === "failed") throw new Error(data.errorMessage);
  }
  throw new Error(`timed out waiting for ${taskId}`);
}

const songId = await submit({
  action: "music",
  custom: true,
  mv: "v5.0",
  title: "Harbour Lights",
  tags: "indie folk, brushed drums, warm analog",
  prompt: "[Verse]\nThe gulls come down before the sun does",
});

const song = await wait(songId);
console.log(song.files.length); // → 2

const tracks = (song.output?.tracks ?? []) as { audioId: string }[];

const extendedId = await submit({
  action: "extend",
  sourceTaskId: songId,
  audioId: tracks[0]?.audioId,
  continueAt: 120,
  custom: true,
  prompt: "[Bridge]\nThe tide turns over in the dark",
  tags: "indie folk, brushed drums",
});

const extended = await wait(extendedId);
console.log(extended.files[0].fileUrl); // → https://storage.api-stock.com/...

{
  "code": 400,
  "error": {
    "message": "action \"extend\" requires continueAt",
    "type": "BadRequest",
    "code": "invalid_input"
  }
}