# create_prefab

Create a prefab from a node with all children and components

Agent View of the PolicyLayer registry record for `create_prefab`. HTML page: https://policylayer.com/tools/caravanglory-cocos-mcp-server/create-prefab

## Facts

- Tool: `create_prefab`
- Server: Cocos (`caravanglory/cocos-mcp-server`) — https://policylayer.com/tools/caravanglory-cocos-mcp-server.md
- Homepage: https://github.com/caravanglory/cocos-mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "create_prefab",
    "arguments": {}
  }
}
```

## Why create_prefab is rated Medium

Creating a prefab is a reversible write operation that adds new data to the Cocos Creator project. While it modifies project state, it does not execute arbitrary code, delete data irreversibly, or move financial resources. The severity is medium because prefab creation could clutter the project or overwrite existing assets if naming conflicts occur, but the primary effect is additive rather than destructive.

From the tool's own definition: "Tool name 'create_prefab' and description 'Create a prefab from a node with all children and components' indicate creation of a new reusable game object asset. This is a write operation that modifies the project by creating new data (prefab asset)."

## Use case

AI agents use create_prefab to create or update resources in Cocos, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cocos environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Cocos:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_prefab": {
      "limits": [
        {
          "counter": "create_prefab_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Cocos (156)

- `batch_delete_assets` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/batch-delete-assets.md
- `clear_all_reference_images` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/clear-all-reference-images.md
- `clear_broadcast_log` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/clear-broadcast-log.md
- `clear_console` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/clear-console.md
- `delete_asset` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/delete-asset.md
- `delete_node` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/delete-node.md
- `remove_component` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/remove-component.md
- `remove_reference_image` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/remove-reference-image.md
- `revert_prefab` — Destructive — https://policylayer.com/tools/caravanglory-cocos-mcp-server/revert-prefab.md
- `align_view_with_node` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/align-view-with-node.md
- `build_project` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/build-project.md
- `change_gizmo_tool` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/change-gizmo-tool.md
- `change_view_mode_2d_3d` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/change-view-mode-2d-3d.md
- `execute_component_method` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/execute-component-method.md
- `execute_scene_script` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/execute-scene-script.md
- `execute_script` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/execute-script.md
- `focus_camera_on_nodes` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/focus-camera-on-nodes.md
- `listen_broadcast` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/listen-broadcast.md
- `open_asset_external` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/open-asset-external.md
- `open_preferences_settings` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/open-preferences-settings.md
- `refresh_assets` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/refresh-assets.md
- `refresh_reference_image` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/refresh-reference-image.md
- `reimport_asset` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/reimport-asset.md
- `run_project` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/run-project.md
- `scene_snapshot_abort` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/scene-snapshot-abort.md
- `soft_reload_scene` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/soft-reload-scene.md
- `start_preview_server` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/start-preview-server.md
- `stop_listening` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/stop-listening.md
- `stop_preview_server` — Execute — https://policylayer.com/tools/caravanglory-cocos-mcp-server/stop-preview-server.md
- `format_mcp_request` — Other — https://policylayer.com/tools/caravanglory-cocos-mcp-server/format-mcp-request.md
- …and 126 more: https://policylayer.com/tools/caravanglory-cocos-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=caravanglory-cocos-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/caravanglory-cocos-mcp-server