# body_set_collision_mask

Set the collision_mask bitmask on a physics body or area (CollisionObject2D/3D) in the edited scene (undoable). mask is the integer bitmask of layers this object scans for collisions.

Agent View of the PolicyLayer registry record for `body_set_collision_mask`. HTML page: https://policylayer.com/tools/godot-breakpoint-mcp/body-set-collision-mask

## Facts

- Tool: `body_set_collision_mask`
- 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": "body_set_collision_mask",
    "arguments": {}
  }
}
```

## Why body_set_collision_mask is rated Medium

This tool modifies physics collision properties of game objects in a Godot scene. While the modification is reversible (undoable), it changes game behavior and could affect scene functionality if misapplied by an agent (e.g., setting incorrect collision masks breaks physics interactions). The modification is not destructive (data is not deleted), not financial, and not code execution.

From the tool's own definition: "Tool description explicitly states it 'Set[s] the collision_mask bitmask on a physics body or area' and is marked '(undoable)', indicating it modifies game object properties reversibly within the edited scene."

## Use case

AI agents use body_set_collision_mask 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": {
    "body_set_collision_mask": {
      "limits": [
        {
          "counter": "body_set_collision_mask_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