# set_material

Set material properties for an object

Agent View of the PolicyLayer registry record for `set_material`. HTML page: https://policylayer.com/tools/aryeon0228-blendermcp/set-material

## Facts

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

## Why set_material is rated Medium

set_material modifies material properties of existing objects, which is a create/update operation (Write category). It is reversible—properties can be changed back or overwritten. Severity is medium because misuse could affect visual output and scene appearance, but lacks the irreversibility of destructive operations or the code execution risk of execute_blender_code.

From the tool's own definition: "Tool name 'set_material' and description 'Set material properties for an object' indicates modification of object properties in Blender. This is a reversible write operation that changes material attributes but does not create, delete, or execute code."

## Use case

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

## 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": {
    "set_material": {
      "limits": [
        {
          "counter": "set_material_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on BlenderMCP (11)

- `delete_object` — Destructive — https://policylayer.com/tools/aryeon0228-blendermcp/delete-object.md
- `execute_blender_code` — Execute — https://policylayer.com/tools/aryeon0228-blendermcp/execute-blender-code.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

## 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=aryeon0228-blendermcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aryeon0228-blendermcp