# execute_blender_code

Execute arbitrary Python code in Blender context. Has access to bpy, C (context), D (data). WARNING: This can modify or delete your scene. Save your work first!

Agent View of the PolicyLayer registry record for `execute_blender_code`. HTML page: https://policylayer.com/tools/aryeon0228-blendermcp/execute-blender-code

## Facts

- Tool: `execute_blender_code`
- Server: BlenderMCP (`aryeon0228/blendermcp`) — https://policylayer.com/tools/aryeon0228-blendermcp.md
- Homepage: https://github.com/Aryeon0228/BlenderMCP
- Risk category: Execute (High 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": "execute_blender_code",
    "arguments": {}
  }
}
```

## Why execute_blender_code is rated High

This is an Execute-category tool because it runs arbitrary code whose effects depend entirely on the arguments provided. While the warning mentions potential destruction, the primary capability is code execution with full Blender API access.

From the tool's own definition: "Tool explicitly states 'Execute arbitrary Python code in Blender context' with access to bpy, C (context), and D (data). Warning states 'This can modify or delete your scene.' The tool permits execution of unrestricted Python scripts within Blender's API."

## Use case

AI agents invoke execute_blender_code to trigger actions in BlenderMCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "execute_blender_code": {
      "limits": [
        {
          "counter": "execute_blender_code_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on BlenderMCP (11)

- `delete_object` — Destructive — https://policylayer.com/tools/aryeon0228-blendermcp/delete-object.md
- `render_scene` — Execute — https://policylayer.com/tools/aryeon0228-blendermcp/render-scene.md
- `scale_object` — Execute — https://policylayer.com/tools/aryeon0228-blendermcp/scale-object.md
- `get_object_info` — Read — https://policylayer.com/tools/aryeon0228-blendermcp/get-object-info.md
- `get_scene_info` — Read — https://policylayer.com/tools/aryeon0228-blendermcp/get-scene-info.md
- `get_viewport_screenshot` — Read — https://policylayer.com/tools/aryeon0228-blendermcp/get-viewport-screenshot.md
- `create_object` — Write — https://policylayer.com/tools/aryeon0228-blendermcp/create-object.md
- `move_object` — Write — https://policylayer.com/tools/aryeon0228-blendermcp/move-object.md
- `rotate_object` — Write — https://policylayer.com/tools/aryeon0228-blendermcp/rotate-object.md
- `save_blend_file` — Write — https://policylayer.com/tools/aryeon0228-blendermcp/save-blend-file.md
- `set_material` — Write — https://policylayer.com/tools/aryeon0228-blendermcp/set-material.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`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=aryeon0228-blendermcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aryeon0228-blendermcp