alvinindra/figma-mcp-rust/generate-type-scale

Generate Type Scale

Given a base font family and body size, generate a full typographic scale as Figma text styles.

Input

Ask the user for:

• Font family (e.g. "Inter"), required
• Base body font size in px (e.g. 16), required
• Scale ratio: "minor-third" (1.2), "major-third" (1.25), "perfect-fourth" (1.333), "golden" (1.618), default major-third
• Include display sizes (above H1)? Default no
• Include mono / code style? Default no

Scale Calculation

Using base size B and ratio R:

Round all sizes to nearest integer. Minimum size: 10px.

Show the full table to the user for review before creating anything.

Creation Steps

1. For each style row, call create_text_style() with:

• name: e.g. "Heading/H1"
• fontFamily: the chosen font
• fontStyle: map weight to style name ("Regular"=400, "Medium"=500, "SemiBold"=600, "Bold"=700)
• fontSize: calculated value
• lineHeightValue + lineHeightUnit="PIXELS" (convert ratio x size to px)
• letterSpacingValue + letterSpacingUnit="PERCENT" (convert em to %)

1. Skip styles already present with the same name (create_text_style is idempotent).

Rules

• Always show the scale preview table before executing.
• Use "Regular" font style for weight 400, "Medium" for 500, "SemiBold" for 600, "Bold" for 700.

Adjust if the chosen font uses different style names (ask user to confirm).

• Line height in PIXELS = round(fontSize x lineHeightRatio).
• Letter spacing in PERCENT = letterSpacingEm x 100.