Nano Banana MCP Server

Edit an existing image using text prompts with Google's Nano Banana models.

Provide an image and describe your desired changes. The model will:

• Add, remove, or modify elements

• Change style, lighting, or colors

• Adjust composition

• Apply filters or effects

The model maintains the original image's style and context while applying changes.

Args:

• prompt (string, required): Description of the edit to make

• image_base64 (string, required): Base64-encoded image data (no data URI prefix)

• image_mime_type (string, required): MIME type of the image (e.g., 'image/png', 'image/jpeg')

• model (string): Model to use. Default: Nano Banana Pro

• aspect_ratio (string): Output aspect ratio. Options: 1:1, 2:3, 3:2, etc.

• resolution (string): Output resolution (Pro only). Options: 1K, 2K, 4K

Returns:

• success (boolean): Whether editing succeeded

• imageData (string): Base64-encoded edited image

• mimeType (string): Image MIME type

• text (string): Any accompanying text from the model

• error (string): Error message if editing failed

Examples:

• "Add a small wizard hat on the cat's head"

• "Change the background to a sunset beach"

• "Make this image look like a Van Gogh painting"

• "Remove the person in the background"

Error Handling:

• Returns error if image data is invalid

• Returns error if MIME type is unsupported

• Returns error if content policy violated