opencode-dashscope-imagegen

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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

Example (replace with a real one)

npm start

Example (replace with a real one)

npm start

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

Who is it for

Use cases

Why choose this