wehub-resource-sync
561 lines
18 KiB
Markdown
561 lines
18 KiB
Markdown
# Unity MCP CLI Usage Guide
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The Unity MCP CLI provides command-line access to control the Unity Editor through the Model Context Protocol. It currently only supports local HTTP.
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Note: Some tools are still experimental and might fail under some circumstances. Please submit an issue to help us make it better.
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## Installation
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```bash
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cd Server
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pip install -e .
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# Or with uv:
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uv pip install -e .
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```
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## Quick Start
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```bash
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# Check connection
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unity-mcp status
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# List Unity instances
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unity-mcp instance list
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# Get scene hierarchy
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unity-mcp scene hierarchy
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# Find a GameObject
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unity-mcp gameobject find "Player"
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```
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## Global Options
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| Option | Env Variable | Description |
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|--------|--------------|-------------|
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| `-h, --host` | `UNITY_MCP_HOST` | Server host (default: 127.0.0.1) |
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| `-p, --port` | `UNITY_MCP_HTTP_PORT` | Server port (default: 8080) |
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| `-t, --timeout` | `UNITY_MCP_TIMEOUT` | Timeout in seconds (default: 30) |
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| `-f, --format` | `UNITY_MCP_FORMAT` | Output format: text, json, table |
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| `-i, --instance` | `UNITY_MCP_INSTANCE` | Target Unity instance |
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## Command Reference
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### Instance Management
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```bash
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# List connected Unity instances
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unity-mcp instance list
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# Set active instance
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unity-mcp instance set "ProjectName@abc123"
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# Show current instance
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unity-mcp instance current
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```
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### Scene Operations
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```bash
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# Get scene hierarchy
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unity-mcp scene hierarchy
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unity-mcp scene hierarchy --limit 20 --depth 3
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# Get active scene info
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unity-mcp scene active
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# Load/save scenes
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unity-mcp scene load "Assets/Scenes/Main.unity"
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unity-mcp scene save
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# Screenshots (use camera command)
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unity-mcp camera screenshot
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unity-mcp camera screenshot --file-name "level_preview"
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unity-mcp camera screenshot --camera-ref "SecondCamera" --include-image
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unity-mcp camera screenshot --batch surround --max-resolution 256
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unity-mcp camera screenshot --batch orbit --view-target "Player"
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unity-mcp camera screenshot --capture-source scene_view --view-target "Canvas" --include-image
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unity-mcp camera screenshot-multiview --view-target "Player" --max-resolution 480
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```
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### GameObject Operations
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```bash
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# Find GameObjects
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unity-mcp gameobject find "Player"
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unity-mcp gameobject find "Enemy" --method by_tag
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# Create GameObjects
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unity-mcp gameobject create "NewCube" --primitive Cube
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unity-mcp gameobject create "Empty" --position 0 5 0
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# Modify GameObjects
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unity-mcp gameobject modify "Cube" --position 1 2 3 --rotation 0 45 0
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# Delete/duplicate
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unity-mcp gameobject delete "OldObject" --force
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unity-mcp gameobject duplicate "Template"
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```
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### Component Operations
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```bash
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# Add component
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unity-mcp component add "Player" Rigidbody
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# Remove component
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unity-mcp component remove "Player" Rigidbody
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# Set property
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unity-mcp component set "Player" Rigidbody mass 10
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```
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### Script Operations
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```bash
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# Create script
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unity-mcp script create "PlayerController" --path "Assets/Scripts"
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# Read script
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unity-mcp script read "Assets/Scripts/Player.cs"
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# Delete script
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unity-mcp script delete "Assets/Scripts/Old.cs" --force
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```
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### Code Search
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```bash
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# Search with regex
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unity-mcp code search "class.*Player" "Assets/Scripts/Player.cs"
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unity-mcp code search "TODO|FIXME" "Assets/Scripts/Utils.cs"
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unity-mcp code search "void Update" "Assets/Scripts/Game.cs" --max-results 20
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```
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### Shader Operations
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```bash
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# Create shader
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unity-mcp shader create "MyShader" --path "Assets/Shaders"
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# Read shader
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unity-mcp shader read "Assets/Shaders/Custom.shader"
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# Update from file
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unity-mcp shader update "Assets/Shaders/Custom.shader" --file local.shader
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# Delete shader
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unity-mcp shader delete "Assets/Shaders/Old.shader" --force
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```
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### Editor Controls
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```bash
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# Play mode
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unity-mcp editor play
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unity-mcp editor pause
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unity-mcp editor stop
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# Refresh assets
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unity-mcp editor refresh
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unity-mcp editor refresh --compile
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# Console
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unity-mcp editor console
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unity-mcp editor console --clear
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# Tags and layers
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unity-mcp editor add-tag "Enemy"
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unity-mcp editor add-layer "Projectiles"
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# Menu items
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unity-mcp editor menu "Edit/Project Settings..."
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# Custom tools
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unity-mcp editor custom-tool "MyBuildTool"
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unity-mcp editor custom-tool "Deploy" --params '{"target": "Android"}'
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# List custom tools for the active Unity project
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unity-mcp tool list
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unity-mcp custom_tool list
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```
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#### Screenshot Parameters
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| Option | Type | Description |
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|--------|------|-------------|
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| `--filename, -f` | string | Output filename (default: timestamp-based) |
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| `--supersize, -s` | int | Resolution multiplier 1–4 for file-saved screenshots |
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| `--camera-ref` | string | Camera name/path/ID (default: Camera.main) |
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| `--include-image` | flag | Return base64 PNG inline in the response |
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| `--max-resolution, -r` | int | Max longest-edge pixels (default 640) |
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| `--batch, -b` | string | `surround` (6 angles) or `orbit` (configurable grid) |
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| `--capture-source` | string | `game_view` (default) or `scene_view` (editor viewport) |
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| `--view-target` | string | Target to focus on: GO name/path/ID, or `x,y,z`. Aims camera (game_view) or frames viewport (scene_view) |
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| `--view-position` | string | Camera position as `x,y,z` (positioned screenshot, game_view only) |
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| `--view-rotation` | string | Camera euler rotation as `x,y,z` (positioned screenshot, game_view only) |
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| `--orbit-angles` | int | Number of azimuth steps around target (default 8) |
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| `--orbit-elevations` | string | Vertical angles as JSON array, e.g. `[0,30,-15]` (default `[0, 30, -15]`) |
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| `--orbit-distance` | float | Camera distance from target in world units (auto-fit if omitted) |
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| `--orbit-fov` | float | Camera FOV in degrees (default 60) |
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| `--output-dir, -o` | string | Save directory (default: Unity project's `Assets/Screenshots/`) |
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### Testing
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```bash
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# Run tests synchronously
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unity-mcp editor tests --mode EditMode
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# Run tests asynchronously
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unity-mcp editor tests --mode PlayMode --async
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# Poll test job
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unity-mcp editor poll-test <job_id>
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unity-mcp editor poll-test <job_id> --wait 60 --details
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```
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### Material Operations
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```bash
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# Create material
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unity-mcp material create "Assets/Materials/Red.mat"
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# Set color
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unity-mcp material set-color "Assets/Materials/Red.mat" 1 0 0
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# Assign to object
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unity-mcp material assign "Assets/Materials/Red.mat" "Cube"
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```
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### VFX Operations
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Note: VFX Graph tooling is tested against com.unity.visualeffectgraph 12.1.13. Install VFX Graph and use URP/HDRP (set the Render Pipeline Asset) to avoid Unity warnings; other versions may be unsupported.
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```bash
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# Particle systems
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unity-mcp vfx particle info "Fire"
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unity-mcp vfx particle play "Fire" --with-children
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unity-mcp vfx particle stop "Fire"
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# Line renderers
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unity-mcp vfx line info "LaserBeam"
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unity-mcp vfx line create-line "Line" --start 0 0 0 --end 10 5 0
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unity-mcp vfx line create-circle "Circle" --radius 5
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# Trail renderers
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unity-mcp vfx trail info "PlayerTrail"
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unity-mcp vfx trail set-time "Trail" 2.0
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# Raw VFX actions (access all 60+ actions)
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unity-mcp vfx raw particle_set_main "Fire" --params '{"duration": 5}'
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```
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### ProBuilder Operations
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Note: Requires com.unity.probuilder package installed in your Unity project.
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```bash
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# Create shapes
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unity-mcp probuilder create-shape Cube
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unity-mcp probuilder create-shape Torus --name "MyTorus" --params '{"rows": 16, "columns": 16}'
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unity-mcp probuilder create-shape Stair --position 0 0 5 --params '{"steps": 10}'
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# Create from polygon footprint
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unity-mcp probuilder create-poly --points "[[0,0,0],[5,0,0],[5,0,5],[0,0,5]]" --height 3
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# Get mesh info
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unity-mcp probuilder info "MyCube"
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# Raw ProBuilder actions
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unity-mcp probuilder raw extrude_faces "MyCube" --params '{"faceIndices": [0], "distance": 1.0}'
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unity-mcp probuilder raw bevel_edges "MyCube" --params '{"edgeIndices": [0,1], "amount": 0.2}'
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unity-mcp probuilder raw set_face_material "MyCube" --params '{"faceIndices": [0], "materialPath": "Assets/Materials/Red.mat"}'
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```
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### Batch Operations
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```bash
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# Execute from JSON file
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unity-mcp batch run commands.json
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unity-mcp batch run commands.json --parallel --fail-fast
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# Execute inline JSON
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unity-mcp batch inline '[{"tool": "manage_scene", "params": {"action": "get_active"}}]'
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# Generate template
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unity-mcp batch template > my_commands.json
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```
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### Prefab Operations
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```bash
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# Open prefab for editing
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unity-mcp prefab open "Assets/Prefabs/Player.prefab"
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# Save and close
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unity-mcp prefab save
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unity-mcp prefab close
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# Create from GameObject
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unity-mcp prefab create "Player" --path "Assets/Prefabs"
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# Modify prefab contents (headless, no UI)
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unity-mcp prefab modify "Assets/Prefabs/Player.prefab" --target Weapon --position "0,1,2"
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unity-mcp prefab modify "Assets/Prefabs/Player.prefab" --delete-child Child1 --delete-child "Turret/Barrel"
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unity-mcp prefab modify "Assets/Prefabs/Player.prefab" --set-property "Rigidbody.mass=5"
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unity-mcp prefab modify "Assets/Prefabs/Player.prefab" --add-component BoxCollider
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unity-mcp prefab modify "Assets/Prefabs/Player.prefab" --create-child '{"name":"Spawn","primitive_type":"Sphere"}'
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```
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### Asset Operations
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```bash
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# Search assets
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unity-mcp asset search --pattern "*.mat" --path "Assets/Materials"
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# Get asset info
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unity-mcp asset info "Assets/Materials/Red.mat"
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# Create folder
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unity-mcp asset mkdir "Assets/NewFolder"
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# Move/rename
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unity-mcp asset move "Assets/Old.mat" "Assets/Materials/"
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```
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### Animation Operations
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```bash
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# Play animation state
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unity-mcp animation play "Player" "Run"
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# Set animator parameter
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unity-mcp animation set-parameter "Player" Speed 1.5
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unity-mcp animation set-parameter "Player" IsRunning true
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```
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### Audio Operations
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```bash
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# Play audio
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unity-mcp audio play "AudioPlayer"
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# Stop audio
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unity-mcp audio stop "AudioPlayer"
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# Set volume
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unity-mcp audio volume "AudioPlayer" 0.5
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```
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### Lighting Operations
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```bash
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# Create light
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unity-mcp lighting create "NewLight" --type Point --position 0 5 0
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unity-mcp lighting create "Spotlight" --type Spot --intensity 2
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```
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### UI Operations
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```bash
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# Create canvas
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unity-mcp ui create-canvas "MainCanvas"
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# Create text
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unity-mcp ui create-text "Title" --parent "MainCanvas" --text "Hello World"
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# Create button
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unity-mcp ui create-button "StartBtn" --parent "MainCanvas" --text "Start"
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# Create image
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unity-mcp ui create-image "Background" --parent "MainCanvas"
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```
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### Camera Operations
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```bash
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unity-mcp camera ping # Check Cinemachine availability
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unity-mcp camera list # List all cameras
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unity-mcp camera create --name "Cam" --preset follow --follow "Player"
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unity-mcp camera set-target "Cam" --follow "Player" --look-at "Enemy"
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unity-mcp camera set-lens "Cam" --fov 60 --near 0.1 --far 1000
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unity-mcp camera set-priority "Cam" --priority 15
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unity-mcp camera set-body "Cam" --body-type "CinemachineFollow"
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unity-mcp camera set-aim "Cam" --aim-type "CinemachineRotationComposer"
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unity-mcp camera set-noise "Cam" --amplitude 1.5 --frequency 0.5
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unity-mcp camera add-extension "Cam" CinemachineConfiner3D
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unity-mcp camera ensure-brain --blend-style "EaseInOut" --blend-duration 1.5
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unity-mcp camera brain-status
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unity-mcp camera force "Cam" # Force Brain to use camera
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unity-mcp camera release # Release override
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unity-mcp camera screenshot --file-name "capture" --super-size 2
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unity-mcp camera screenshot --batch orbit --view-target "Player" --max-resolution 256
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unity-mcp camera screenshot --capture-source scene_view --view-target "Canvas" --include-image
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unity-mcp camera screenshot-multiview --view-target "Player" --max-resolution 480
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```
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### Graphics Operations
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```bash
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# Volumes
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unity-mcp graphics volume-create --name "PostFX" --global
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unity-mcp graphics volume-add-effect --target "PostFX" --effect "Bloom"
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unity-mcp graphics volume-set-effect --target "PostFX" --effect "Bloom" -p intensity 1.5
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unity-mcp graphics volume-info --target "PostFX"
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unity-mcp graphics volume-list-effects
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# Render Pipeline
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unity-mcp graphics pipeline-info
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unity-mcp graphics pipeline-set-quality --level "High"
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unity-mcp graphics pipeline-set-settings -s renderScale 1.5
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# Light Baking
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unity-mcp graphics bake-start [--sync]
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unity-mcp graphics bake-status
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unity-mcp graphics bake-cancel
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unity-mcp graphics bake-settings
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unity-mcp graphics bake-create-probes --spacing 5
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unity-mcp graphics bake-create-reflection --resolution 512
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# Stats & Debug
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unity-mcp graphics stats
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unity-mcp graphics stats-memory
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unity-mcp graphics stats-debug-mode --mode "Wireframe"
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# URP Renderer Features
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unity-mcp graphics feature-list
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unity-mcp graphics feature-add --type "ScreenSpaceAmbientOcclusion"
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unity-mcp graphics feature-configure --name "SSAO" -p Intensity 1.5
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unity-mcp graphics feature-toggle --name "SSAO" --active|--inactive
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# Skybox & Environment
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unity-mcp graphics skybox-info
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unity-mcp graphics skybox-set-material --material "Assets/Materials/Sky.mat"
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unity-mcp graphics skybox-set-ambient --mode Flat --color "0.2,0.2,0.3"
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unity-mcp graphics skybox-set-fog --enable --mode ExponentialSquared --density 0.02
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unity-mcp graphics skybox-set-reflection --intensity 1.0 --bounces 2
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unity-mcp graphics skybox-set-sun --target "DirectionalLight"
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```
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### Package Operations
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```bash
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unity-mcp packages ping # Check package manager
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unity-mcp packages list # List installed packages
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unity-mcp packages search "cinemachine" # Search registry
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unity-mcp packages info "com.unity.cinemachine" # Package details
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unity-mcp packages add "com.unity.cinemachine" # Install package
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unity-mcp packages add "com.unity.cinemachine@4.1.1" # Specific version
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unity-mcp packages remove "com.unity.cinemachine" [--force]
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unity-mcp packages embed "com.unity.cinemachine" # Embed for local editing
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unity-mcp packages resolve # Force re-resolution
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unity-mcp packages status <job_id> # Check async op
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unity-mcp packages list-registries
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unity-mcp packages add-registry "Name" --url URL -s "com.example"
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unity-mcp packages remove-registry "Name"
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```
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### Texture Operations
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```bash
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unity-mcp texture create "Assets/Textures/Red.png" --color "1,0,0,1"
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unity-mcp texture create "Assets/Textures/Check.png" --pattern checkerboard --width 256 --height 256
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unity-mcp texture create "Assets/Textures/Img.png" --image-path "/path/to/source.png"
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unity-mcp texture sprite "Assets/Sprites/Player.png" --width 32 --height 32 --ppu 16
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unity-mcp texture modify "Assets/Textures/Img.png" --set-pixels '{"x":0,"y":0,"width":16,"height":16,"color":[1,0,0,1]}'
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unity-mcp texture delete "Assets/Textures/Old.png" [--force]
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# Patterns: checkerboard, stripes, stripes_h, stripes_v, stripes_diag, dots, grid, brick
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```
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### Raw Commands
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For any MCP tool not covered by dedicated commands:
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```bash
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unity-mcp raw manage_scene '{"action": "get_hierarchy", "max_nodes": 100}'
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unity-mcp raw read_console '{"count": 20}'
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unity-mcp raw manage_camera '{"action": "screenshot", "include_image": true}'
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unity-mcp raw manage_graphics '{"action": "volume_get_info", "target": "PostProcessing"}'
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unity-mcp raw manage_packages '{"action": "list_packages"}'
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```
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---
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## Complete Command Reference
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| Group | Subcommands |
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|-------|-------------|
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| `instance` | `list`, `set`, `current` |
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| `scene` | `hierarchy`, `active`, `load`, `save`, `create`, `build-settings` |
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| `code` | `read`, `search` |
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| `gameobject` | `find`, `create`, `modify`, `delete`, `duplicate`, `move` |
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| `component` | `add`, `remove`, `set`, `modify` |
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| `script` | `create`, `read`, `delete`, `edit`, `validate` |
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| `shader` | `create`, `read`, `update`, `delete` |
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| `editor` | `play`, `pause`, `stop`, `refresh`, `console`, `menu`, `tool`, `add-tag`, `remove-tag`, `add-layer`, `remove-layer`, `tests`, `poll-test`, `custom-tool` |
|
||
| `asset` | `search`, `info`, `create`, `delete`, `duplicate`, `move`, `rename`, `import`, `mkdir` |
|
||
| `prefab` | `open`, `close`, `save`, `create`, `modify` |
|
||
| `material` | `info`, `create`, `set-color`, `set-property`, `assign`, `set-renderer-color` |
|
||
| `camera` | `ping`, `list`, `create`, `set-target`, `set-lens`, `set-priority`, `set-body`, `set-aim`, `set-noise`, `add-extension`, `remove-extension`, `ensure-brain`, `brain-status`, `set-blend`, `force`, `release`, `screenshot`, `screenshot-multiview` |
|
||
| `graphics` | `ping`, `volume-create`, `volume-add-effect`, `volume-set-effect`, `volume-remove-effect`, `volume-info`, `volume-set-properties`, `volume-list-effects`, `volume-create-profile`, `pipeline-info`, `pipeline-settings`, `pipeline-set-quality`, `pipeline-set-settings`, `bake-start`, `bake-cancel`, `bake-status`, `bake-clear`, `bake-settings`, `bake-set-settings`, `bake-reflection-probe`, `bake-create-probes`, `bake-create-reflection`, `stats`, `stats-memory`, `stats-debug-mode`, `feature-list`, `feature-add`, `feature-remove`, `feature-configure`, `feature-reorder`, `feature-toggle`, `skybox-info`, `skybox-set-material`, `skybox-set-properties`, `skybox-set-ambient`, `skybox-set-fog`, `skybox-set-reflection`, `skybox-set-sun` |
|
||
| `packages` | `ping`, `list`, `search`, `info`, `add`, `remove`, `embed`, `resolve`, `status`, `list-registries`, `add-registry`, `remove-registry` |
|
||
| `texture` | `create`, `sprite`, `modify`, `delete` |
|
||
| `vfx particle` | `info`, `play`, `stop`, `pause`, `restart`, `clear` |
|
||
| `vfx line` | `info`, `set-positions`, `create-line`, `create-circle`, `clear` |
|
||
| `vfx trail` | `info`, `set-time`, `clear` |
|
||
| `vfx` | `raw` (access all 60+ actions) |
|
||
| `probuilder` | `create-shape`, `create-poly`, `info`, `raw` (access all 35+ actions) |
|
||
| `batch` | `run`, `inline`, `template` |
|
||
| `animation` | `play`, `set-parameter` |
|
||
| `audio` | `play`, `stop`, `volume` |
|
||
| `lighting` | `create` |
|
||
| `tool` | `list` |
|
||
| `custom_tool` | `list` |
|
||
| `ui` | `create-canvas`, `create-text`, `create-button`, `create-image` |
|
||
|
||
---
|
||
|
||
## Output Formats
|
||
|
||
```bash
|
||
# Text (default) - human readable
|
||
unity-mcp scene hierarchy
|
||
|
||
# JSON - for scripting
|
||
unity-mcp --format json scene hierarchy
|
||
|
||
# Table - structured display
|
||
unity-mcp --format table instance list
|
||
```
|
||
|
||
## Environment Variables
|
||
|
||
Set defaults via environment:
|
||
|
||
```bash
|
||
export UNITY_MCP_HOST=192.168.1.100
|
||
export UNITY_MCP_HTTP_PORT=8080
|
||
export UNITY_MCP_FORMAT=json
|
||
export UNITY_MCP_INSTANCE=MyProject@abc123
|
||
```
|
||
|
||
## Troubleshooting
|
||
|
||
### Connection Issues
|
||
|
||
```bash
|
||
# Check server status
|
||
unity-mcp status
|
||
|
||
# Verify Unity is running with MCP plugin
|
||
# Check Unity console for MCP connection messages
|
||
```
|
||
|
||
### Common Errors
|
||
|
||
| Error | Solution |
|
||
|-------|----------|
|
||
| Cannot connect to server | Ensure Unity MCP server is running |
|
||
| Unknown command type | Unity plugin may not support this tool |
|
||
| Timeout | Increase timeout with `-t 60` |
|