Use Eleven Sfx V2 with Comfy Router

Call elevenlabs/eleven_sfx_v2 through Comfy Router: endpoint, request shape and the response Router returns.

API Reference for elevenlabs/eleven_sfx_v2, served by Comfy Router from Elevenlabs.

Quick start

Create a key at platform.comfy.org/profile/api-keys and export it as COMFY_API_KEY. The Python and TypeScript snippets use the Comfy SDKs (pip install comfy-sdk, npm install @comfyorg/sdk); the cURL snippet is the same call over raw HTTP.

Model ID: elevenlabs/eleven_sfx_v2

Endpoint: POST https://api.comfy.org/v2/models/elevenlabs/eleven_sfx_v2

Python

from comfy_sdk import Comfy

# Reads COMFY_API_KEY from the environment. Each call sends a fresh
# Idempotency-Key and waits up to 10 minutes for the finished result.
with Comfy() as client:
    result = client.models.run(
        "elevenlabs/eleven_sfx_v2",
        {
            "duration_seconds": 5,
            "text": "A distant rumble of thunder rolling across a valley.",
        },
    )

print(result)

Schema

Input

duration_seconds · number · required

The duration of the sound which will be generated in seconds. Must be at least 0.5 and at most 30. REQUIRED on this route: unlike the upstream ElevenLabs API, which guesses an optimal duration when the field is null, this route rejects a request that omits it with 400 “Duration is required”. The field stays nullable only so an explicit null is a well-formed document; it is still refused. This value is the quantity the request is metered on.

Range: 0.5 to 30

Format: double

loop · boolean · default: "false"

Whether to create a sound effect that loops smoothly. ElevenLabs documents this as available only for the ‘eleven_text_to_sound_v2’ model, which this route does NOT admit (see model_id), so it may have no effect here.

model_id · string

The model ID to use for the sound generation. This route admits ‘eleven_sfx_v2’ and nothing else; any other value is rejected with 400 before the request reaches ElevenLabs. It is NOT in this schema’s required list because Comfy Router fills it from the {model} path segment of /v2/models/elevenlabs/{model}, so a Router caller omits it.

prompt_influence · number

A higher prompt influence makes your generation follow the prompt more closely while also making generations less variable. Must be a value between 0 and 1. Defaults to 0.3.

Range: 0 to 1

Format: double

text · string · required

The text that will get converted into a sound effect.

Generated from the schema Router serves at GET /v2/models/elevenlabs/eleven_sfx_v2/openapi.json, the same document it validates a call against before the request reaches the provider.

Output

Router does not publish an output schema for this model.

Examples

Input

{
  "duration_seconds": 5,
  "text": "A distant rumble of thunder rolling across a valley."
}

Before you ship

The snippets above are the shortest working call. Three things are the same for every model and are documented once on the Comfy Router headers page: send an Idempotency-Key on every paid call and reuse it when you retry, expect the connection to be held up to Router’s 10 minute deadline, and keep X-Comfy-Request-Id from every response. The SDKs do all three for you; the cURL tab does none of them. On failure, X-Comfy-Error-Type names the bucket, and a 422 means the body failed the model’s schema and was never billed.

Headers

Authentication, idempotency, request IDs, error buckets, retry pacing, spend limits.

Quick Start

Typed error handling in Python and TypeScript, reading the 422, walking the catalog.

Limitations

What Router does not do today, and what to use instead.