Single tool with significant quality gaps. Tool name 'send_images_to_gemini' violates verb_noun clarity (ambiguous: does it send, generate, or process?). Description is 400+ chars in Chinese with embedded examples and implementation details, too long, mixes concerns. Input schema present but parameters lack proper type constraints: 'images' accepts Union[str, List[str], None] without enum/pattern validation. No output schema documented. Error handling is minimal (generic try/catch). Tool performs multiple responsibilities: text-to-image generation AND image analysis AND file download/save, should be split. No pagination, no structured response format specified.

• Rename tool to 'generate_image_from_text' (if primary use) or split into 'generate_image' + 'analyze_image' with separate, focused descriptions.
• Rewrite description in English, 50 - 150 chars, answering: What does it do? When to use it? What does it return? E.g., 'Generate an image from a text prompt using Gemini 2.5 Flash. Returns image path and description.'
• Add formal schema constraints: 'images' should be oneOf [{type: string, format: uri}, {type: string, format: file-path}, {type: array, items: {oneOf: [uri, file-path]}}]. Remove ad-hoc null-checking from code.
• Document output schema explicitly: {type: object, properties: {success: bool, text: string, images: [string], error: string}, required: [success, text]}.
• Split tool into separate, single-purpose tools: 'generate_image_from_text(prompt: string)' and 'analyze_image(image: string|[string], prompt: string)' with distinct error handling and output formats.