UnityFigmaMCP: Skill for Claude Code

Inspect Diff — Figma vs Unity Comparison

This skill compares a Unity prefab with its Figma source node and produces a detailed diff report. Nothing is modified — this is purely read-only inspection. Use it to understand what's out of sync before deciding whether to update.

Input

The user needs to provide:

• Prefab path — Unity asset path (e.g. Assets/UI/Prefabs/MyScreen.prefab)
• Figma file key — the key from the Figma URL
• Node ID — the Figma node this prefab was built from

Workflow

Step 1 — Fetch both sides

Do these in parallel:

• figma_get_node(fileKey, nodeId) — download the current Figma tree
• unity_get_hierarchy(prefabPath) — current Unity prefab hierarchy

Then call figma_get_node_names(fileKey, nodeId). It reads the copy figma_get_node saved, so it fails if run before or alongside it.

Step 2 — Compare

Walk both trees in parallel and compare by matching node names/paths.

Check these categories:

Structure:

• Nodes in Figma but not in Unity (added in design)
• Nodes in Unity but not in Figma (removed in design, or added manually in Unity)
• Sibling order differences

Text properties:

• Content, font size, font family, font style, color, alignment

RectTransform:

• Size (width, height), position, anchors, pivot

Image:

• Color, sprite reference, image type

Layout:

• Layout mode, spacing, padding, child alignment

ContentSizeFitter:

• Horizontal/vertical fit modes

Active state:

• Enabled/disabled mismatches

Step 3 — Report

Present in the user's language. Group by severity — structural changes first, then property changes.

## Figma vs Unity — Diff Report

Prefab: Assets/UI/Prefabs/MyScreen.prefab
Source: figma.com/file/<key>, node 123:456

### Summary
- 2 structural changes
- 5 property changes
- Prefab is NOT up to date

### Structural differences

Added in Figma (missing in Unity):
- Card/Badge
- Footer/SocialLinks

Only in Unity (not in Figma):
- Card/CustomOverlay — possibly added manually

### Property differences

| Node           | Property   | Figma        | Unity        |
|----------------|------------|--------------|--------------|
| Header/Title   | text       | "New Title"  | "Old Title"  |
| Header/Title   | size       | 18           | 16           |
| Header/Title   | color      | #111111      | #333333      |
| Card           | size       | [320, 200]   | [300, 200]   |
| Content        | spacing    | 12           | 8            |