npm install threlte-mcp

npm install threlte-mcp

npx threlte-mcp setup

<script>
  import { MCPBridgeComponent } from 'threlte-mcp/client';
</script>

<!-- Add inside your <Canvas> -->
<MCPBridgeComponent />

{
  "mcpServers": {
    "threlte-mcp": {
      "command": "npx",
      "args": ["-y", "threlte-mcp"]
    }
  }
}

import { MCPBridge } from 'threlte-mcp/client';
import { useThrelte } from '@threlte/core';

const { scene } = useThrelte();

// Create bridge (auto-connects in dev mode)
const bridge = new MCPBridge(scene, {
  url: 'ws://127.0.0.1:8082',  // default
  autoConnect: true,           // default in dev
  reconnectDelay: 60000,       // 1 minute
});

// In render loop
bridge.update();

// Get scene state
bridge.getSceneState();

// Find objects
bridge.findObjects({ nameContains: 'player' });

<script lang="ts">
  import { onMount, onDestroy } from 'svelte';
  import { useThrelte } from '@threlte/core';

  const { scene } = useThrelte();
  let ws: WebSocket | null = null;
  
  onMount(() => {
    ws = new WebSocket('ws://localhost:8082');
    
    ws.onopen = () => {
      console.log('[MCPBridge] Connected');
      // Send initial scene state
      ws?.send(JSON.stringify({
        type: 'sceneState',
        data: serializeScene(scene)
      }));
    };
    
    ws.onmessage = (event) => {
      const command = JSON.parse(event.data);
      handleCommand(command);
    };
  });
  
  onDestroy(() => {
    ws?.close();
  });
  
  function serializeScene(obj: THREE.Object3D, depth = 0, maxDepth = 3) {
    if (depth > maxDepth) return null;
    return {
      name: obj.name,
      type: obj.type,
      position: obj.position.toArray(),
      rotation: obj.rotation.toArray().slice(0, 3),
      scale: obj.scale.toArray(),
      visible: obj.visible,
      children: obj.children.map(c => serializeScene(c, depth + 1, maxDepth)).filter(Boolean)
    };
  }
  
  function handleCommand(cmd: any) {
    const { action, requestId, ...params } = cmd;
    let result;
    
    switch (action) {
      case 'getFullSceneState':
        result = { data: serializeScene(scene, 0, params.maxDepth || 3) };
        break;
      case 'moveSceneObject':
        const obj = scene.getObjectByName(params.name || params.path);
        if (obj && params.position) {
          obj.position.set(...params.position);
          result = { success: true };
        }
        break;
      // Add more handlers as needed
    }
    
    if (requestId) {
      ws?.send(JSON.stringify({ ...result, requestId }));
    }
  }
</script>

"Get the scene state"
"Find all objects named 'Player'"  
"Move the 'Camera' to position [0, 5, 10]"
"Apply the 'neon' vibe to the scene"

# Add to .env file:
VITE_MCP_ENABLED=true

# Clone the repo
git clone https://github.com/RaulContreras123/threlte-mcp.git
cd threlte-mcp

# Install dependencies
npm install

# Run in development
npm run dev

# Build for production
npm run build