Agent skill

figma-architecture-variants

Choose between Figma integration architectures: CLI script, webhook service, or plugin. Use when deciding how to integrate with Figma, comparing REST API vs Plugin API, or planning a Figma-connected application. Trigger with phrases like "figma architecture", "figma blueprint", "how to integrate figma", "figma plugin vs api", "figma project type".

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SKILL.md

Figma Architecture Variants

Overview

Three proven architecture patterns for Figma integrations, based on the two primary Figma APIs: the REST API (external tools) and the Plugin API (in-editor experiences).

Prerequisites

  • Clear use case requirements
  • Understanding of Figma REST API vs Plugin API differences

Instructions

Step 1: Choose Your Architecture

Architecture API Used Best For Hosting
CLI/Script REST API Design token sync, asset export None (runs locally or in CI)
Webhook Service REST API Real-time automation, Slack bots Server/serverless
Figma Plugin Plugin API In-editor tools, design linting Runs in Figma desktop app

Variant A: CLI Script (Simplest)

Use case: Extract design tokens, export icons, sync to code

Developer runs script
        │
        ▼
  ┌─────────────┐
  │ CLI Script   │  (Node.js)
  │ - extract.ts │
  └──────┬───────┘
         │ GET /v1/files/:key
         │ GET /v1/images/:key
         ▼
  ┌─────────────┐
  │ Figma REST  │
  │ API         │
  └──────┬──────┘
         │
         ▼
  ┌─────────────┐
  │ Output      │
  │ - tokens.css│
  │ - icons/    │
  └─────────────┘
json
{
  "scripts": {
    "figma:tokens": "tsx scripts/extract-tokens.ts",
    "figma:icons": "tsx scripts/export-icons.ts",
    "figma:sync": "npm run figma:tokens && npm run figma:icons"
  }
}

Pros: Zero infrastructure, runs in CI, easy to debug Cons: Not real-time, manual trigger, no webhook support


Variant B: Webhook Service (Event-Driven)

Use case: Auto-sync on file save, Slack notifications, build triggers

  ┌─────────────┐
  │ Figma Cloud  │
  │ FILE_UPDATE  │──── Webhook V2 ────┐
  │ FILE_COMMENT │                    │
  └──────────────┘                    │
                                      ▼
                               ┌──────────────┐
                               │ Your Service  │
                               │ (Vercel/Fly)  │
                               ├──────────────┤
                               │ /webhooks     │ ← Verify passcode
                               │ /health       │
                               │ /api/tokens   │
                               └──────┬───────┘
                                      │
                          ┌───────────┼───────────┐
                          ▼           ▼           ▼
                    ┌──────────┐ ┌──────────┐ ┌──────────┐
                    │ Token    │ │ Slack    │ │ CI       │
                    │ Rebuild  │ │ Notify   │ │ Trigger  │
                    └──────────┘ └──────────┘ └──────────┘
typescript
// Minimal webhook service (Express)
const app = express();
app.post('/webhooks/figma', express.json(), verifyPasscode, (req, res) => {
  res.status(200).json({ received: true });
  processEvent(req.body); // async
});
app.get('/health', healthCheck);
app.listen(process.env.PORT || 3000);

Pros: Real-time, event-driven, no polling waste Cons: Requires hosting, HTTPS endpoint, webhook management


Variant C: Figma Plugin (In-Editor)

Use case: Design linting, component generation, data population

  ┌─────────────────────────────────────────┐
  │             Figma Desktop App            │
  │                                         │
  │  ┌─────────────┐   ┌─────────────────┐ │
  │  │ Plugin       │   │ Canvas          │ │
  │  │ Sandbox     │   │ (your design)   │ │
  │  │             │   │                 │ │
  │  │ code.ts     │◄──│ figma.currentPage│ │
  │  │ figma.*     │──►│ figma.createRect │ │
  │  │             │   │                 │ │
  │  ├─────────────┤   └─────────────────┘ │
  │  │ UI iframe   │                        │
  │  │ ui.html     │                        │
  │  │ (React/HTML)│                        │
  │  └─────────────┘                        │
  └─────────────────────────────────────────┘
json
// manifest.json
{
  "name": "My Design Linter",
  "id": "1234567890",
  "api": "1.0.0",
  "main": "dist/code.js",
  "ui": "dist/ui.html",
  "editorType": ["figma"],
  "permissions": ["currentuser"]
}
typescript
// code.ts -- Plugin API (runs in Figma sandbox)
// Access the document directly -- no REST API needed
const page = figma.currentPage;
const frames = page.findAll(n => n.type === 'FRAME');

// Create nodes programmatically
const rect = figma.createRectangle();
rect.resize(200, 100);
rect.fills = [{ type: 'SOLID', color: { r: 1, g: 0.5, b: 0 } }];
page.appendChild(rect);

// Read component properties
const components = page.findAll(n => n.type === 'COMPONENT') as ComponentNode[];
for (const comp of components) {
  console.log(`${comp.name}: ${comp.width}x${comp.height}`);
}

Pros: Direct document access, instant feedback, rich UI Cons: Only works in Figma desktop, no server-side processing, sandboxed

Step 2: Decision Matrix

Factor CLI Script Webhook Service Figma Plugin
Real-time No Yes Yes (in-editor)
Infrastructure None Server/serverless None
CI/CD integration Natural Via webhook Not applicable
User interaction No No Yes
API used REST API REST API Plugin API
File modification No (read-only) No (read-only) Yes (full access)
Figma app required No No Yes
Auth PAT PAT + webhook passcode None (runs in Figma)

Step 3: Hybrid Architecture

Many production systems combine variants:

CLI (CI) ← Scheduled token sync (daily at 9 AM)
     +
Webhook Service ← Real-time notifications (Slack, rebuild triggers)
     +
Figma Plugin ← In-editor design linting and data population

Output

  • Architecture variant selected based on use case
  • Data flow documented
  • API choice justified (REST vs Plugin)
  • Implementation skeleton provided

Error Handling

Issue Cause Solution
CLI too slow Full file fetch Use depth=1 and /nodes
Webhook not firing No HTTPS Deploy to platform with TLS
Plugin sandbox limits Heavy computation Offload to REST API via fetch in UI iframe
Wrong variant choice Over-engineering Start with CLI, add webhook when needed

Resources

Next Steps

For common anti-patterns, see figma-known-pitfalls.

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