# set_material Set PBR material properties on an object using Principled BSDF. Agent View of the PolicyLayer registry record for `set_material`. HTML page: https://policylayer.com/tools/dwgx-blender-copilot/set-material ## Facts - Tool: `set_material` - Server: Blender Copilot MCP Server (`dwgx/blender-copilot`) — https://policylayer.com/tools/dwgx-blender-copilot.md - Homepage: https://github.com/dwgx/blender-copilot - 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 The tool creates or modifies material data (write operation) rather than merely reading scene state. While reversible and non-destructive, it alters persistent asset properties. The blast radius is medium: an agent could degrade visual quality or apply unexpected appearances to many objects, but changes are undoable in Blender and do not delete data or execute arbitrary code. From the tool's own definition: "Tool modifies material properties on objects via 'Set PBR material properties on an object using Principled BSDF' — this is a create/modify operation that changes rendering attributes of 3D assets." ## Use case AI agents use set_material to create or update resources in Blender Copilot MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Blender Copilot MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Blender Copilot MCP Server: ```json { "version": "1", "default": "deny", "tools": { "set_material": { "limits": [ { "counter": "set_material_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Blender Copilot MCP Server (306) - `anim_clear_all` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/anim-clear-all.md - `anim_delete_keyframe` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/anim-delete-keyframe.md - `apply_modifier` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/apply-modifier.md - `batch_delete` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/batch-delete.md - `blender_new_file` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/blender-new-file.md - `clear_animation` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/clear-animation.md - `delete_object` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/delete-object.md - `modifier_remove` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/modifier-remove.md - `optimize_scene` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/optimize-scene.md - `physics_remove` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/physics-remove.md - `remove_constraint` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/remove-constraint.md - `remove_modifier` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/remove-modifier.md - `scene_cleanup` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/scene-cleanup.md - `uv_remove_layer` — Destructive — https://policylayer.com/tools/dwgx-blender-copilot/uv-remove-layer.md - `bake_ao` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/bake-ao.md - `bake_physics` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/bake-physics.md - `bake_textures` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/bake-textures.md - `blender_launch` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/blender-launch.md - `blender_open_file` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/blender-open-file.md - `bmesh_operation` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/bmesh-operation.md - `build_material_nodes` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/build-material-nodes.md - `build_scene_from_json` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/build-scene-from-json.md - `cloth_sim_model` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/cloth-sim-model.md - `execute_code` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/execute-code.md - `execute_script_headless` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/execute-script-headless.md - `execute_script_on_file` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/execute-script-on-file.md - `ft_sculpt_shape_key` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/ft-sculpt-shape-key.md - `ft_setup_eye_tracking_full` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/ft-setup-eye-tracking-full.md - `generate_hunyuan3d_model` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/generate-hunyuan3d-model.md - `generate_hyper3d_model_via_images` — Execute — https://policylayer.com/tools/dwgx-blender-copilot/generate-hyper3d-model-via-images.md - …and 276 more: https://policylayer.com/tools/dwgx-blender-copilot.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=dwgx-blender-copilot · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dwgx-blender-copilot