restyle-diagram

Restyle Diagram

Transform an existing diagram, screenshot, or sketch into a new visual style. The MCP tool image_to_image accepts a source image, target style (preset or free-text brief), and optional preservation directives.

When to use

• User has a diagram created elsewhere and wants to apply a new visual style
• User wants to polish a screenshot or rough sketch into a polished diagram
• User wants to experiment with multiple styles on the same diagram
• User needs to preserve specific labels or topology while changing the look

Inputs to gather

• Source image path (required) — absolute path to the image file to transform
• Target style (optional) — preset from list-diagram-styles (e.g. blueprint, pixel-art, neon-sign) OR free-text style brief (e.g. "clean, minimalist, flat design"). Default: corporate-clean. Offer to run list-diagram-styles if unsure.
• Preservation directives (optional) — free-text notes like "keep all labels" or "preserve network topology" to guide the transformation
• Output path (optional) — where to save the result. Default: ${CLAUDE_USER_DATA:-${XDG_DATA_HOME:-$HOME/.local/share}/claude-plugins}/nano-tech-diagrams/diagrams/<slug>-<timestamp>.png

Procedure

1. If the MCP is not installed, show the user: claude mcp add nano-tech-diagrams -- npx -y nano-tech-diagrams-mcp and stop.
2. Validate that the source image path is readable; fail with a clear message if not found.
3. Call mcp__nano-tech-diagrams__image_to_image with source_image (base64 or URL), target_style, preservation_directives.
4. Extract the base64 PNG from the response.
5. Compute output path (use default if not specified), ensuring parent directories exist.
6. Write the base64 as PNG to disk.
7. Report the file path and fal.media URL.

Output / side effects

• Transformed PNG saved to disk.
• User sees local path and fal.media URL.

Safety / constraints

• Never dump raw base64 into the chat — always write to disk first.
• If preservation directives are vague, offer to refine them before retrying.