> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-chore-sync-comfy-api-v2-spec.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Use Videos Avatar Image 2video with Comfy Router

> Call kling/videos-avatar-image2video through Comfy Router: endpoint, request shape and the response Router returns.

API Reference for `kling/videos-avatar-image2video`, served by Comfy Router from Kling.

## Quick start

Create a key at [platform.comfy.org/profile/api-keys](https://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:** `kling/videos-avatar-image2video`

**Endpoint:** `POST https://api.comfy.org/v2/models/kling/videos-avatar-image2video`

<CodeGroup>
  ```python Python theme={null}
  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(
          "kling/videos-avatar-image2video",
          {
              "image": "https://example.invalid/kling/avatar.png",
              "mode": "std",
              "prompt": "The presenter smiles and gestures towards the camera.",
              "sound_file": "https://example.invalid/kling/voice.mp3",
          },
      )

  print(result)
  ```

  ```typescript TypeScript theme={null}
  import { comfy } from "@comfyorg/sdk";

  // Reads COMFY_API_KEY from the environment. Each call sends a fresh
  // Idempotency-Key and waits up to 10 minutes for the finished result.
  const { data } = await comfy.models.run("kling/videos-avatar-image2video", {
    image: "https://example.invalid/kling/avatar.png",
    mode: "std",
    prompt: "The presenter smiles and gestures towards the camera.",
    sound_file: "https://example.invalid/kling/voice.mp3",
  });

  console.log(data);
  ```

  ```bash cURL theme={null}
  curl https://api.comfy.org/v2/models/kling/videos-avatar-image2video \
    -H "X-API-Key: $COMFY_API_KEY" \
    -H "Idempotency-Key: $(uuidgen)" \
    -H "Content-Type: application/json" \
    -d "{\"image\": \"https://example.invalid/kling/avatar.png\", \"mode\": \"std\", \"prompt\": \"The presenter smiles and gestures towards the camera.\", \"sound_file\": \"https://example.invalid/kling/voice.mp3\"}"
  ```
</CodeGroup>

## Schema

### Input

<ParamField body="audio_id" type="string">
  Audio ID Generated via TTS API. Only supports 2-300 second audio generated within the last 30 days. Either audio\_id or sound\_file must be provided (mutually exclusive).
</ParamField>

<ParamField body="callback_url" type="string (uri)">
  The callback notification address for the result of this task.

  Format: `uri`
</ParamField>

<ParamField body="external_task_id" type="string">
  Customized Task ID. Must be unique within a single user account.
</ParamField>

<ParamField body="image" type="string" required>
  Avatar Reference Image. Supports Base64 encoding or image URL. Supported formats: .jpg/.jpeg/.png. Max 10MB, min 300px width/height, aspect ratio between 1:2.5 and 2.5:1.
</ParamField>

<ParamField body="mode" type="string" default="&#x22;std&#x22;">
  Video generation mode. std: Standard Mode (cost-effective), pro: Professional Mode (longer duration, higher quality).

  Possible values: `std`, `pro`
</ParamField>

<ParamField body="prompt" type="string">
  Positive text prompt. Can define avatar actions, emotions, and camera movements.
</ParamField>

<ParamField body="sound_file" type="string">
  Sound File. Supports Base64-encoded audio or accessible audio URL. Accepted formats: .mp3/.wav/.m4a/.aac (max 5MB), 2-300 seconds. Either audio\_id or sound\_file must be provided (mutually exclusive).
</ParamField>

<ParamField body="watermark_info" type="object" />

<ParamField body="watermark_info.enabled" type="boolean">
  Whether to generate watermarked results simultaneously.
</ParamField>

Generated from the schema Router serves at `GET /v2/models/kling/videos-avatar-image2video/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

```json theme={null}
{
  "image": "https://example.invalid/kling/avatar.png",
  "mode": "std",
  "prompt": "The presenter smiles and gestures towards the camera.",
  "sound_file": "https://example.invalid/kling/voice.mp3"
}
```

## 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](/development/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.

<CardGroup cols={3}>
  <Card title="Headers" icon="list" href="/development/comfy-router/headers">
    Authentication, idempotency, request IDs, error buckets, retry pacing, spend limits.
  </Card>

  <Card title="Quick Start" icon="rocket" href="/development/comfy-router/quickstart">
    Typed error handling in Python and TypeScript, reading the 422, walking the catalog.
  </Card>

  <Card title="Limitations" icon="triangle-exclamation" href="/development/comfy-router/limitations">
    What Router does not do today, and what to use instead.
  </Card>
</CardGroup>