> ## Documentation Index > Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-5b6e02fd.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # ImageGenerationServerToolConfig - Python SDK > ImageGenerationServerToolConfig method reference The Python SDK and docs are currently in beta. Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues). Configuration for the openrouter:image\_generation server tool. Accepts all image\_config params (aspect\_ratio, quality, size, background, output\_format, output\_compression, moderation, etc.) plus a model field. ## Fields | Field | Type | Required | Description | Example | | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------- | -------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- | | `model` | *Optional\[str]* | :heavy\_minus\_sign: | Which image generation model to use (e.g. "openai/gpt-5-image"). Defaults to "openai/gpt-5-image". | openai/gpt-5-image | | `__pydantic_extra__` | Dict\[str, [components.ImageGenerationServerToolConfigUnion](/client-sdks/python/api-reference/components/imagegenerationservertoolconfigunion)] | :heavy\_minus\_sign: | N/A | `{"aspect_ratio": "16:9","model": "openai/gpt-5-image","quality": "high"}` |