gemini-nano-banana

name	gemini-nano-banana
description	Auto-generated skill for gemini tools via OneKey Agent Router.

OneKey Agent Router

Use One Access Key to connect to various commercial APIs. Please visit the OneKey Router Keys and read the docs OneKey MCP Router Doc and OneKey Agent Router Doc.

gemini Skill

Use the OneKey Agent Router to access tools for this server via a unified access key.

Quick Start

Set your OneKey access key:

export DEEPNLP_ONEKEY_ROUTER_ACCESS=YOUR_API_KEY

If no key is provided, the scripts fall back to the demo key BETA_TEST_KEY_MARCH_2026. Common settings:

• unique_id: gemini/gemini
• api_id: one of the tools listed below

Tools

generate_image_gemini

Generates an image using the Gemini Image API. Supported Models (aliases are internal): The model parameter allows selection between available image generation models. - "gemini-2.5-flash-image" (recommended default for stable, fast response). - "gemini-3-pro-image-preview". - "gemini-3-flash"

        Aliases for these models are 'nano-banana 2.5' and 'nano-banana 3 Pro' respectively.
        Please use 'gemini-2.5-flash-image' unless the user specifically requests the Gemini 3 model.

    Args:
        model: The image generation model to use (see supported models above). Defaults to "gemini-2.5-flash-image". Supports: 'gemini-3-flash', 'gemini-3-pro-image-preview', 'gemini-2.5-flash-image'
        prompt: A detailed text description for the image to be generated.
        image_name: The filename for the output image, can be a relative path. Defaults to "gemini_output_images.png".
        output_folder: The optional folder path where the image will be saved (use the user's personal directory). If None, uses a server default.
        aspect_ratio: The aspect ratio of the generated image (e.g., '16:9', '1:1', '4:3'). Defaults to '16:9'.
        image_size: The size/resolution of the generated image (e.g., '1K', '2K', '4K'). Defaults to '1K'.

    Return:
        Dict: Result dictionary containing image path, message, and success status.
        output_result["image_path"]: str
        output_result["image_url"]: str
        output_result["message"]: str
        output_result["success"]: bool

Parameters:

• model (string, optional):
• prompt (string, optional):
• image_name (string, optional):
• output_folder (object, optional):
• aspect_ratio (string, optional):
• image_size (string, optional):

generate_image_nano_banana

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    Args:
        model: The image generation model to use. Defaults to "gemini-2.5-flash-image". Supported Models such as follows Google Gemini Doc, such as 'gemini-3-flash', "gemini-3-pro-image-preview", "gemini-2.5-flash-image", note that nano-banana is the alias name of the Gemini Image Model. Nano banana 3 Pro refers to Gemini 3 pro preview, and Nono Banana 2.5 refers to Gemini 2.5. Unless specified by user to use Gemini 3 model preview, general 'Neno Banana' image models, please use 'gemini-2.5-flash-image' for more stable and fast response.
        prompt: A detailed text description for the image to be generated.
        image_name: The filename for the output image, can be a relative path, such as "./new_gemini_image.png", etc. Defaults to "gemini_output_images.png".
        output_folder: The optional folder path where the image will be saved. Please use the users' personal directory for this path. If None, uses a default location to the root folder of the server/image
        aspect_ratio: The aspect ratio of the generated image (e.g., '16:9', '1:1', '4:3'), defaults to '16:9'.
        image_size: The size/resolution of the generated image (e.g., '1K', '2K', '4K'), defaults to '1K'.

    Return:
        Dict:  output_result is the result dict of MCP returned
        output_result["image_path"] = full_path: str
        output_result["message"] = output_message: str
        output_result["success"] = success: bool

Parameters:

• model (string, optional):
• prompt (string, optional):
• image_name (string, optional):
• output_folder (object, optional):
• aspect_ratio (string, optional):
• image_size (string, optional):

Scripts

Each tool has a dedicated script in this folder:

• skills/gemini/scripts/generate_image_gemini.py
• skills/gemini/scripts/generate_image_nano_banana.py

Example

python3 scripts/<tool_name>.py --data '{"key": "value"}'

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