| name | restyle-diagram |
| description | Use when the user has an existing diagram or screenshot and wants to transform it into a different visual style or polish the rendering. |
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
- If the MCP is not installed, show the user:
claude mcp add nano-tech-diagrams -- npx -y nano-tech-diagrams-mcp and stop.
- Validate that the source image path is readable; fail with a clear message if not found.
- Call
mcp__nano-tech-diagrams__image_to_image with source_image (base64 or URL), target_style, preservation_directives.
- Extract the base64 PNG from the response.
- Compute output path (use default if not specified), ensuring parent directories exist.
- Write the base64 as PNG to disk.
- 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.
