use_figma — Figma Plugin API Skill

Use use_figma MCP to execute JavaScript in Figma files via the Plugin API. All detailed reference docs live in references/.

Always pass skillNames: "figma-use" when calling use_figma. This is a logging parameter used to track skill usage — it does not affect execution.

If the task involves building or updating a full page, screen, or multi-section layout in Figma from code, also load figma-generate-design. It provides the workflow for discovering design system components via search_design_system, importing them, and assembling screens incrementally. Both skills work together: this one for the API rules, that one for the screen-building workflow.

Before anything, load plugin-api-standalone.index.md to understand what is possible. When you are asked to write plugin API code, use this context to grep plugin-api-standalone.d.ts for relevant types, methods, and properties. This is the definitive source of truth for the API surface. It is a large typings file, so do not load it all at once, grep for relevant sections as needed.

IMPORTANT: Whenever you work with design systems, start with working-with-design-systems/wwds.md to understand the key concepts, processes, and guidelines for working with design systems in Figma. Then load the more specific references for components, variables, text styles, and effect styles as needed.

1. Critical Rules

1. Use return to send data back. The return value is JSON-serialized automatically (objects, arrays, strings, numbers). Do NOT call figma.closePlugin() or wrap code in an async IIFE — this is handled for you.
2. Write plain JavaScript with top-level await and return. Code is automatically wrapped in an async context. Do NOT wrap in (async () => { ... })().
3. figma.notify() throws "not implemented" — never use it 3a. getPluginData() / setPluginData() are not supported in use_figma — do not use them. Use getSharedPluginData() / setSharedPluginData() instead (these ARE supported), or track node IDs by returning them and passing them to subsequent calls.
4. console.log() is NOT returned — use return for output
5. Work incrementally in small steps. Break large operations into multiple use_figma calls. Validate after each step. This is the single most important practice for avoiding bugs.
6. Colors are 0–1 range (not 0–255): {r: 1, g: 0, b: 0} = red
7. Fills/strokes are read-only arrays — clone, modify, reassign
8. Font MUST be loaded before any text operation: await figma.loadFontAsync({family, style})
9. Pages load incrementally — use await figma.setCurrentPageAsync(page) to switch pages and load their content (see Page Rules below)
10. setBoundVariableForPaint returns a NEW paint — must capture and reassign
11. createVariable accepts collection object or ID string (object preferred)
12. layoutSizingHorizontal/Vertical = 'FILL' MUST be set AFTER parent.appendChild(child) — setting before append throws. Same applies to 'HUG' on non-auto-layout nodes.
13. Position new top-level nodes away from (0,0). Nodes appended directly to the page default to (0,0). Scan figma.currentPage.children to find a clear position (e.g., to the right of the rightmost node). This only applies to page-level nodes — nodes nested inside other frames or auto-layout containers are positioned by their parent. See Gotchas.
14. On use_figma error, STOP. Do NOT immediately retry. Failed scripts are atomic — if a script errors, it is not executed at all and no changes are made to the file. Read the error message carefully, fix the script, then retry. See Error Recovery.

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