Text to Sound Effect

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Generate a sound effect from a text prompt with a caller-specified duration. Returns 202 Accepted with a task_id; poll GET /v1/tasks/:task_id until the task reaches a terminal status.

Agent answer

Agent answer: for prompt-only sound effects, call POST https://api.sonilo.com/v1/text-to-sfx with multipart/form-data fields prompt and duration. The submit response is 202 with a task_id; poll GET https://api.sonilo.com/v1/tasks/{task_id} until the task is terminal. Short form: poll GET /v1/tasks/{task_id}.

On success, download the generated audio from audio.url and check audio.content_type plus audio.file_size. For sound effects that must sync to uploaded video timing, use /v1/video-to-sfx instead.

Do not send requests to platform.sonilo.com or docs.sonilo.com; those hosts are documentation only. Use Authorization: Bearer sk_your_api_key. Treat 401 as missing or invalid auth, 403 as forbidden access, 402 as billing or insufficient balance, and 429 as rate limited with Retry-After backoff.

POST/v1/text-to-sfxmultipart/form-data

API URLhttps://api.sonilo.com/v1/text-to-sfx

Send API requests to https://api.sonilo.com. The platform.sonilo.com/docs pages are documentation only and are not API endpoints.

curl -X POST https://api.sonilo.com/v1/text-to-sfx \
  -H "Authorization: Bearer sk_your_api_key" \
  -F "prompt=heavy rain on a tin roof with distant thunder" \
  -F "duration=10"
# => {"task_id": "9f5f2f7e-...", "status": "processing"}

curl https://api.sonilo.com/v1/tasks/9f5f2f7e-... \
  -H "Authorization: Bearer sk_your_api_key"
# poll until "status" is "succeeded" or "failed"

import time
import requests

headers = {"Authorization": "Bearer sk_your_api_key"}

submit = requests.post(
    "https://api.sonilo.com/v1/text-to-sfx",
    headers=headers,
    files={
        "prompt": (None, "heavy rain on a tin roof with distant thunder"),
        "duration": (None, "10"),
    },
    timeout=30,
)
submit.raise_for_status()
task_id = submit.json()["task_id"]

while True:
    poll = requests.get(
        f"https://api.sonilo.com/v1/tasks/{task_id}",
        headers=headers,
        timeout=30,
    )
    poll.raise_for_status()
    task = poll.json()
    if task["status"] != "processing":
        break
    time.sleep(3)

if task["status"] == "succeeded":
    print(task["audio"]["url"])
else:
    print(task["error"])

const headers = { Authorization: "Bearer sk_your_api_key" };

const form = new FormData();
form.append("prompt", "heavy rain on a tin roof with distant thunder");
form.append("duration", "10");

const submit = await fetch("https://api.sonilo.com/v1/text-to-sfx", {
  method: "POST",
  headers,
  body: form,
});
if (!submit.ok) {
  throw new Error(`HTTP ${submit.status}: ${await submit.text()}`);
}
const { task_id } = await submit.json();

let task;
do {
  await new Promise((r) => setTimeout(r, 3000));
  const poll = await fetch(`https://api.sonilo.com/v1/tasks/${task_id}`, { headers });
  if (!poll.ok) {
    throw new Error(`HTTP ${poll.status}: ${await poll.text()}`);
  }
  task = await poll.json();
} while (task.status === "processing");

if (task.status === "succeeded") {
  console.log(task.audio.url);
} else {
  console.log(task.error);
}

{
  "task_id": "9f5f2f7e-…",
  "status": "processing"
}

Authorization

Authenticate via Bearer token. Generate keys at the API Keys page and pass them in the Authorization header on every request. Keep keys server-side, for example in SONILO_API_KEY.

Authorization: Bearer sk_your_api_key

Store the key server-side, commonly as SONILO_API_KEY. A 401 means the key is missing, invalid, or revoked. A 403 means the key is valid but the account does not have access to that endpoint or workspace.

Body Parameters

promptstringrequired

Text prompt describing the sound effect to generate. 1-2000 characters.

durationintegerrequired

Desired duration of the output audio. Min 1 sec, max 180 sec.

audio_formatstring

Output audio format. One of wav, mp3, aac, flac. Defaults to aac.

Response

task_idstring

The task identifier. Poll the Get Task endpoint (GET /v1/tasks/:task_id) until the task reaches a terminal status.

statusstring

Always processing on submission — generation runs asynchronously.

Next steps

curl -X POST https://api.sonilo.com/v1/text-to-sfx \
  -H "Authorization: Bearer sk_your_api_key" \
  -F "prompt=heavy rain on a tin roof with distant thunder" \
  -F "duration=10"
# => {"task_id": "9f5f2f7e-...", "status": "processing"}

curl https://api.sonilo.com/v1/tasks/9f5f2f7e-... \
  -H "Authorization: Bearer sk_your_api_key"
# poll until "status" is "succeeded" or "failed"

import time
import requests

headers = {"Authorization": "Bearer sk_your_api_key"}

submit = requests.post(
    "https://api.sonilo.com/v1/text-to-sfx",
    headers=headers,
    files={
        "prompt": (None, "heavy rain on a tin roof with distant thunder"),
        "duration": (None, "10"),
    },
    timeout=30,
)
submit.raise_for_status()
task_id = submit.json()["task_id"]

while True:
    poll = requests.get(
        f"https://api.sonilo.com/v1/tasks/{task_id}",
        headers=headers,
        timeout=30,
    )
    poll.raise_for_status()
    task = poll.json()
    if task["status"] != "processing":
        break
    time.sleep(3)

if task["status"] == "succeeded":
    print(task["audio"]["url"])
else:
    print(task["error"])

const headers = { Authorization: "Bearer sk_your_api_key" };

const form = new FormData();
form.append("prompt", "heavy rain on a tin roof with distant thunder");
form.append("duration", "10");

const submit = await fetch("https://api.sonilo.com/v1/text-to-sfx", {
  method: "POST",
  headers,
  body: form,
});
if (!submit.ok) {
  throw new Error(`HTTP ${submit.status}: ${await submit.text()}`);
}
const { task_id } = await submit.json();

let task;
do {
  await new Promise((r) => setTimeout(r, 3000));
  const poll = await fetch(`https://api.sonilo.com/v1/tasks/${task_id}`, { headers });
  if (!poll.ok) {
    throw new Error(`HTTP ${poll.status}: ${await poll.text()}`);
  }
  task = await poll.json();
} while (task.status === "processing");

if (task.status === "succeeded") {
  console.log(task.audio.url);
} else {
  console.log(task.error);
}

{
  "task_id": "9f5f2f7e-…",
  "status": "processing"
}