> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cowagent.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Doubao

> Doubao (Volcengine Ark) model configuration (Text / Image Understanding / Image Generation / Embedding)

Doubao (Volcengine Ark) supports text chat, image understanding, image generation (Seedream), and embedding. A single `ark_api_key` enables all capabilities.

<Tip>
  All capabilities below can be configured in one place via the "Model Management" page in the Web Console, with no need to manually edit the configuration file.
</Tip>

## Text Chat

```json theme={null}
{
  "model": "doubao-seed-2-1-pro-260628",
  "ark_api_key": "YOUR_API_KEY"
}
```

| Parameter      | Description                                                                                                                                    |
| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| `model`        | Can be `doubao-seed-2-1-pro-260628`, `doubao-seed-2-1-turbo-260628`, `doubao-seed-2-0-pro-260215`, `doubao-seed-2-0-code-preview-260215`, etc. |
| `ark_api_key`  | Create one in the [Volcengine Ark Console](https://console.volcengine.com/ark/region:ark+cn-beijing/apikey)                                    |
| `ark_base_url` | Optional, defaults to `https://ark.cn-beijing.volces.com/api/v3`                                                                               |

## Image Understanding

Once `ark_api_key` is configured and the main model is a Doubao model, the Agent's Vision tool automatically uses the current main model to recognize images, with no extra setup required.

To manually specify a Vision model:

```json theme={null}
{
  "tools": {
    "vision": {
      "model": "doubao-seed-2-1-pro-260628"
    }
  }
}
```

## Image Generation

```json theme={null}
{
  "skills": {
    "image-generation": {
      "model": "seedream-5.0-lite"
    }
  }
}
```

Available models: `seedream-5.0-lite`, `seedream-4.5`.

## Embedding

```json theme={null}
{
  "embedding_provider": "doubao",
  "embedding_model": "doubao-embedding-vision-251215"
}
```

The default model is `doubao-embedding-vision-251215` (multimodal embedding); the dimension (1024 or 2048) can be set via `embedding_dimensions` in the configuration file. After changing the embedding, run `/memory rebuild-index` to rebuild the index.