# node_add_to_group

Add a node to a group (persistent, undoable). No-op if already a member.

Agent View of the PolicyLayer registry record for `node_add_to_group`. HTML page: https://policylayer.com/tools/godot-breakpoint-mcp/node-add-to-group

## Facts

- Tool: `node_add_to_group`
- Server: Godot Breakpoint (`jlivingston-Cipher/godot-breakpoint-mcp`) — https://policylayer.com/tools/godot-breakpoint-mcp.md
- Homepage: https://github.com/jlivingston-Cipher/godot-breakpoint-mcp
- 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": "node_add_to_group",
    "arguments": {}
  }
}
```

## Why node_add_to_group is rated Medium

This tool creates or modifies a group membership relationship within the Godot scene tree. While it has side effects on the internal state of the game project, it is explicitly undoable (reversible) and does not delete data, execute arbitrary code, or cause financial impact. It falls squarely into the Write category as a reversible state modification.

From the tool's own definition: "Tool description explicitly states 'Add a node to a group' and is marked as 'undoable', indicating reversible modification of node group membership state in Godot."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Godot Breakpoint (238)

- `anim_delete` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/anim-delete.md
- `anim_remove_key` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/anim-remove-key.md
- `cs_rename` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/cs-rename.md
- `filesystem_move` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/filesystem-move.md
- `inputmap_erase_action` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/inputmap-erase-action.md
- `node_delete` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/node-delete.md
- `project_remove_autoload` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/project-remove-autoload.md
- `scene_close` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/scene-close.md
- `scene_reload` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/scene-reload.md
- `shader_set_code` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/shader-set-code.md
- `tilemap_clear` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/tilemap-clear.md
- `cs_dbg_attach` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-attach.md
- `cs_dbg_continue` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-continue.md
- `cs_dbg_evaluate` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-evaluate.md
- `cs_dbg_launch` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-launch.md
- `cs_dbg_restart` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-restart.md
- `cs_dbg_set_exception_breakpoints` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-set-exception-breakpoints.md
- `cs_dbg_step` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-step.md
- `dbg_attach` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-attach.md
- `dbg_continue` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-continue.md
- `dbg_evaluate` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-evaluate.md
- `dbg_goto` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-goto.md
- `dbg_launch` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-launch.md
- `dbg_restart` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-restart.md
- `dbg_set_exception_breakpoints` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-set-exception-breakpoints.md
- `dbg_set_variable` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-set-variable.md
- `dbg_step` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-step.md
- `filesystem_scan` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/filesystem-scan.md
- `godot_launch_editor` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/godot-launch-editor.md
- `godot_run_managed` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/godot-run-managed.md
- …and 208 more: https://policylayer.com/tools/godot-breakpoint-mcp.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=godot-breakpoint-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/godot-breakpoint-mcp