Headless Blender automation via FastMCP — 41 portmanteau tools (150+ ops). Batch mesh/VSE/Grease Pencil, VRM, Gaussian splats; optional live bridge. For Cursor / Claude Desktop.
Overview
Control Blender with natural language through MCP. Tell Claude to create a steampunk robot with glowing eyes and watch it build in Blender. 1. Download the .mcpb from Releases 2. Drag it into (Settings → MCP Servers → Install from file) 3. Install Blender if you have not already 4. Restart Claude Desktop and try: Create a red cube on a gray floor with a sun lamp. That is enough for most tools — the server runs Blender headless in the background. install the bridge addon in Blender to watch the scene update while you chat. See INSTALL.md. Other install methods (npx mcpb, manual config, developer setup): for most MCP tools — the server spawns headless Blender automatically and falls back from live session when no bridge is connected. Install Blender separately; it is never bundled. Override path with BLENDER_EXECUTABLE. — Most tools run headless. Use blender_session start + the bridge addon only if you want the viewport to update live. See INSTALL.md.
README
Blender MCP — AI-Powered Blender Automation
Control Blender with natural language through MCP. Tell Claude to create a steampunk robot with glowing eyes and watch it build in Blender.
Get started in 2 minutes
| Download | What it is |
|---|---|
| blender-mcp-*.mcpb | MCP server for Claude Desktop |
| Blender | 3D app (install separately, never bundled) |
| blender_bridge_addon.py (optional) | Live viewport only — skip for headless use |
Claude Desktop one-liner (downloads + runs the installer from the latest release):
irm https://github.com/sandraschi/blender-mcp/releases/latest/download/install.ps1 | iex
Other MCP clients (manual config via uvx):
{
"mcpServers": {
"blender-mcp": {
"command": "uvx",
"args": ["blender-mcp"],
"env": { "BLENDER_EXECUTABLE": "C:\\Program Files\\Blender Foundation\\Blender 4.4\\blender.exe" }
}
}
}
Steps
- Download the
.mcpbfrom Releases - Drag it into Claude Desktop (Settings → MCP Servers → Install from file)
- Install Blender if you have not already
- Restart Claude Desktop and try: Create a red cube on a gray floor with a sun lamp.
That is enough for most tools — the server runs Blender headless in the background.
Optional — live viewport: install the bridge addon in Blender to watch the scene update while you chat. See INSTALL.md.
Other install methods (npx mcpb, manual config, developer setup): INSTALL.md
How it runs
| Mode | Host app | When |
|---|---|---|
| Headless (default) | blender --background subprocess |
Batch export, CI, agents without a display; VSE, geonodes, most mesh ops |
| Live GUI (optional) | Blender + bridge addon | Watch the agent build; viewport screenshots; sculpt with live feedback |
| Per-tool override | prefer_session=False |
Batch jobs force headless even if bridge is connected |
You do not need to open Blender’s UI for most MCP tools — the server spawns headless Blender automatically and falls back from live session when no bridge is connected.
Install Blender separately; it is never bundled. Override path with BLENDER_EXECUTABLE.
Watch or batch — Most tools run headless. Use
blender_sessionstart + the bridge addon only if you want the viewport to update live. See INSTALL.md.
Hands-in / Hands-out
| Direction | Artifacts | Notes |
|---|---|---|
| Hands-in | Natural-language scene prompts | Agent instructions; blender_ai_* script generation |
| Hands-in | .blend, image refs, mesh files |
Webapp upload or tool params |
| Hands-in | Rodin / Tripo / Hunyuan mesh URLs | blender_ai_generate and related tools |
| Hands-in | Inline bpy scripts |
blender_script_execute, handler-backed tools |
| Hands-out | .glb, .gltf, .fbx, .obj, .usd |
blender_export — headless |
| Hands-out | .vrm, VRChat-ready avatars |
Export + validation pipeline — headless |
| Hands-out | .blend (saved scene) |
After agent edit session — headless or live bridge |
| Hands-out | Viewport PNG, MP4 (VSE), Gaussian splats | blender_render, blender_vse, splat tools — headless |
Fleet Crossconnects (Companions)
blender-mcp works completely standalone. You can optionally connect it with companion servers in the sandraschi fleet to unlock extended features:
| Companion Server | Feature Unlocked | Status | Setup |
|---|---|---|---|
qcad-mcp |
dxf-svg-exchange, 2d-cad-to-3d-scene | Optional | Install Guide |
freecad-mcp |
step-cad-import, mechanical-visualization | Optional | Install Guide |
resonite-mcp |
gltf-export-to-vr, avatar-mesh-pipeline | Optional | Install Guide |
speech-mcp |
task-completion-readout, render-completion-announcements | Optional | Install Guide |
Self-Contained Companions: Fleet companions operate independently. Installing companions does not trigger transitive dependency chains.
Features
- Natural-language 3D creation — scenes, meshes, materials, lighting, animation
- Live GUI bridge — watch the agent build in Blender while you chat
- 48+ MCP tools — mesh edit, sculpt, geonodes, compositor, VSE, export (GLB, VRM, VRChat, Unity)
- Generative AI hooks — Rodin/Tripo/Hunyuan mesh generation and vision refine
- Webapp dashboard — scene explorer, agent lab, materials, mesh/splat pipeline
- Fleet-ready — FastMCP 3.2,
.mcpbpackaging, Prometheus metrics, optional Docker
What You Can Do
Try these in Claude Desktop after install:
Create a red cube on a gray floor with a sun lamp and render a viewport screenshot.
Build a simple chair with wood material and export as GLB.
Start a live Blender session and add a sphere with a metallic blue shader.
Documentation
| Doc | Contents |
|---|---|
| Installation | All install methods, prerequisites, bridge setup |
| Configuration | Env vars, Claude Desktop env block |
| Tool Reference | Capabilities and tool catalog |
| Development | Contributing, just, lint, build |
| Troubleshooting | Common errors and fixes |
| Architecture | System design |
| Roadmap | Planned improvements |
| Monitoring | Prometheus / Grafana / Loki |
| Docker | Optional container deploy |
Extended guides: docs/DOCUMENTATION_INDEX.md
Webapp and Native App
Dashboard (optional): .\start.ps1 → http://localhost:10848 — see INSTALL.md.
Tauri desktop installer (~15 MB, no Python required): just build-native — see docs/DEVELOPMENT.md.
Requirements
- Claude Desktop (or any MCP client for manual config)
- Blender 3.0+ — installed separately, never bundled; override with
BLENDER_EXECUTABLE - LLM (optional) — Ollama, LM Studio, or cloud API for script generation; see INSTALL.md
- OS: Windows, macOS, Linux
- Python 3.12+ — only for Options C/D (clone-from-source)
License
MIT — FlowEngineer sandraschi. Free for personal and commercial use.
Install
uvx blender-mcpConfiguration
{
"mcpServers": {
"blender-mcp": {
"command": "uvx",
"args": ["blender-mcp"],
"env": { "BLENDER_EXECUTABLE": "C:\\Program Files\\Blender Foundation\\Blender 4.4\\blender.exe" }
}
}
}