# unity_list_instances List running Unity Editor instances (name, port, version, clone flag, pluginVersion). Agent View of the PolicyLayer registry record for `unity_list_instances`. HTML page: https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-list-instances ## Facts - Tool: `unity_list_instances` - Server: Unity MCP Server (`anklebreaker-studio/unity-mcp-server`) — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server.md - Homepage: https://github.com/AnkleBreaker-Studio/unity-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": "unity_list_instances", "arguments": {} } } ``` ## Why unity_list_instances is rated Low This is a straightforward read operation that queries and returns information about currently running Unity Editor instances. It has no capability to create, modify, delete, or execute operations. The information returned is metadata that could be useful for monitoring or discovery, but poses minimal security risk as a standalone tool. From the tool's own definition: "Tool name 'unity_list_instances' and description 'List running Unity Editor instances' indicates a query/retrieval operation with no side effects. Returns metadata (name, port, version, clone flag, pluginVersion) without modifying any state." ## Use case AI agents call unity_list_instances to retrieve information from Unity MCP Server 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 Unity MCP Server: ```json { "version": "1", "default": "deny", "tools": { "unity_list_instances": {} } } ``` ## Other tools on Unity MCP Server (337) - `unity_amplify_remove_node` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-amplify-remove-node.md - `unity_animation_remove_curve` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-curve.md - `unity_animation_remove_event` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-event.md - `unity_animation_remove_keyframe` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-keyframe.md - `unity_animation_remove_layer` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-layer.md - `unity_animation_remove_parameter` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-parameter.md - `unity_animation_remove_state` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-state.md - `unity_animation_remove_transition` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-animation-remove-transition.md - `unity_asset_delete` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-asset-delete.md - `unity_component_remove` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-component-remove.md - `unity_console_clear` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-console-clear.md - `unity_editorprefs_delete` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-editorprefs-delete.md - `unity_gameobject_delete` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-gameobject-delete.md - `unity_input_remove_action` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-input-remove-action.md - `unity_input_remove_map` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-input-remove-map.md - `unity_navmesh_clear` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-navmesh-clear.md - `unity_packages_remove` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-packages-remove.md - `unity_playerprefs_delete` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-playerprefs-delete.md - `unity_playerprefs_delete_all` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-playerprefs-delete-all.md - `unity_prefab_remove_component` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-prefab-remove-component.md - `unity_prefab_remove_gameobject` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-prefab-remove-gameobject.md - `unity_probuilder_delete_faces` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-probuilder-delete-faces.md - `unity_scene_new` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-scene-new.md - `unity_shadergraph_remove_node` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-shadergraph-remove-node.md - `unity_spriteatlas_delete` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-spriteatlas-delete.md - `unity_terrain_clear_detail` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-terrain-clear-detail.md - `unity_terrain_clear_trees` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-terrain-clear-trees.md - `unity_terrain_remove_layer` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-terrain-remove-layer.md - `unity_terrain_remove_tree_prototype` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-terrain-remove-tree-prototype.md - `unity_undo_clear` — Destructive — https://policylayer.com/tools/anklebreaker-studio-unity-mcp-server/unity-undo-clear.md - …and 307 more: https://policylayer.com/tools/anklebreaker-studio-unity-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=anklebreaker-studio-unity-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/anklebreaker-studio-unity-mcp-server