opencode-dashscope-imagegen

Text-to-image generation for OpenCode via Alibaba DashScope — qwen-image-2.0, qwen-image-3.0 and wan2.7-image exposed as an image_generate tool your coding agent can call.

Highlights

• Adds a single image_generate tool to any OpenCode agent — no extra server, no MCP setup.
• Uses the native DashScope multimodal-generation endpoint (the OpenAI-compatible /v1/images/generations route is not served by DashScope).
• Saves the PNG to disk and returns the absolute path, so vision models (qwen3-vl-plus, kimi-k3, …) can inspect the result via normal image attachments.
• Works with any DashScope text-to-image model, including the Wan series (wan2.7-image).

Supported models

| Model | Notes | | -------------------------- | ---------------------------------- | | qwen-image-2.0 (default) | fast general-purpose text-to-image | | qwen-image-3.0 | newer Qwen-Image generation | | wan2.7-image | Wan (Tongyi Wanxiang) image models |

Prerequisites

• OpenCode installed.
• A DashScope API key from Alibaba Cloud Model Studio (Bailian console). Key resolution order:
  1. DASHSCOPE_IMAGEGEN_API_KEY env
  2. DASHSCOPE_API_KEY env
  3. apiKey of any dashscope* provider in your opencode.json

Installation

Add the npm package name to your opencode.json — OpenCode installs it on next launch:

{
  "plugin": ["opencode-dashscope-imagegen"]
}

Developing locally

To run from a checkout instead of npm, reference the plugin directory and install its dependencies once (@opencode-ai/plugin must resolve from the plugin's own directory):

{
  "plugin": ["file:///path/to/opencode-dashscope-imagegen"]
}

npm install
npm run build   # tsc → dist/ (js + d.ts)

Usage

Just ask your agent: "generate an image of a lighthouse at dusk" — it will call the tool:

| Arg | Default | Description | | ------------- | ---------------- | --------------------------------------------------------- | | prompt | required | image description | | model | qwen-image-2.0 | any DashScope text-to-image model | | size | 1024*1024 | W*H with a star, e.g. 1280*720 | | output_path | auto | absolute path; default <config>/gen-images/gen-<ts>.png |

Output directory override: DASHSCOPE_IMAGEGEN_DIR env.

Troubleshooting

• InvalidApiKey / 401 — no key found; check the resolution order above.
• Tool not appearing — restart OpenCode after editing opencode.json; plugins load at startup.
• size rejected — use W*H with * (star), not x: 1024*1024.
• Model not supported — the key's account must have the model enabled in Model Studio.

Related

• OpenCode plugin docs
• OpenCode ecosystem
• awesome-opencode

License

MIT