# validate_prefab

Validate a prefab file format

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

## Facts

- Tool: `validate_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: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why validate_prefab is rated Low

Validation is a read-only operation that inspects and checks file format integrity without creating, modifying, deleting, or executing code. The tool retrieves information about file validity but does not alter the prefab or trigger side effects. This is consistent with Read category tools that query or inspect data.

From the tool's own definition: "Tool name 'validate_prefab' and description 'Validate a prefab file format' indicate this performs validation/verification of a prefab file without modifying it or triggering external operations."

## Use case

AI agents call validate_prefab to retrieve information from Cocos without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "validate_prefab": {}
  }
}
```

## 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