Agent skills
Skills you can use with AI coding agents, indexed from public GitHub repositories.
-
unity-skill-generate
Generate all skills from the existed Tools in the Unity Project.
IvanMurzak/Unity-MCP 2,087
-
assets-prefab-instantiate
Instantiates prefab in the current active scene. Use 'assets-find' tool to find prefab assets in the project.
IvanMurzak/Unity-MCP 2,087
-
assets-create-folder
Creates a new folder in the specified parent folder. The parent folder string must start with the 'Assets' folder, and all folders within the parent folder string must already exist. For example, when specifying 'Assets/ParentFolder1/ParentFolder2/', the new folder will be created in 'ParentFolder2' only if ParentFolder1 and ParentFolder2 already exist. Use it to organize scripts and assets in the project. Does AssetDatabase.Refresh() at the end. Returns the GUID of the newly created folder, if successful.
IvanMurzak/Unity-MCP 2,087
-
editor-selection-get
Get information about the current Selection in the Unity Editor. Use 'editor-selection-set' tool to set the selection.
IvanMurzak/Unity-MCP 2,087
-
scene-set-active
Set the specified opened scene as the active scene. Use 'scene-list-opened' tool to get the list of all opened scenes.
IvanMurzak/Unity-MCP 2,087
-
script-update-or-create
Updates or creates script file with the provided C# code. Does AssetDatabase.Refresh() at the end. Provides compilation error details if the code has syntax errors. Use 'script-read' tool to read existing script files first.
IvanMurzak/Unity-MCP 2,087
-
console-clear-logs
Clears the MCP log cache (used by console-get-logs) and the Unity Editor Console window. Useful for isolating errors related to a specific action by clearing logs before performing the action.
IvanMurzak/Unity-MCP 2,087
-
gameobject-find
Finds specific GameObject by provided information in opened Prefab or in a Scene. First it looks for the opened Prefab, if any Prefab is opened it looks only there ignoring a scene. If no opened Prefab it looks into current active scene. Returns GameObject information and its children. Also, it returns Components preview just for the target GameObject.
IvanMurzak/Unity-MCP 2,087
-
scene-create
Create new scene in the project assets. Use 'scene-list-opened' tool to list all opened scenes after creation.
IvanMurzak/Unity-MCP 2,087
-
unity-skill-create
Create a new skill using C# code. It will be added into the project as a .cs file and compiled by Unity. The skill will be available for use after compilation.
It must be a partial class decorated with [McpPluginToolType]. Each tool method must be decorated with [McpPluginTool]. The class name should match the file name. All Unity API calls must use com.IvanMurzak.ReflectorNet.Utils.MainThread.Instance.Run(). Return a data model for structured output, or void for side-effect-only operations.
Full sample:
```csharp
#nullable enable
using System;
using System.ComponentModel;
using com.IvanMurzak.McpPlugin;
using com.IvanMurzak.ReflectorNet.Utils;
using com.IvanMurzak.Unity.MCP.Editor.Utils;
using com.IvanMurzak.Unity.MCP.Runtime.Data;
using UnityEditor;
using UnityEngine;
namespace com.IvanMurzak.Unity.MCP.Editor.API
{
[McpPluginToolType]
public partial class Tool_Sample
{
[McpPluginTool("sample-get", Title = "Sample / Get")]
[Description("Finds a GameObject and returns its ref data.")]
public GameObjectRef Get
(
[Description("Name of the GameObject to find.")]
string name
)
{
return MainThread.Instance.Run(() =>
{
var go = GameObject.Find(name)
?? throw new ArgumentException($"GameObject '{name}' not found.", nameof(name));
return new GameObjectRef(go);
});
}
[McpPluginTool("sample-rename", Title = "Sample / Rename")]
[Description("Renames a GameObject.")]
public void Rename
(
[Description("Current name of the GameObject.")]
string name,
[Description("New name to assign.")]
string newName
)
{
MainThread.Instance.Run(() =>
{
var go = GameObject.Find(name)
?? throw new ArgumentException($"GameObject '{name}' not found.", nameof(name));
go.name = newName;
EditorUtility.SetDirty(go);
AssetDatabase.Refresh(ImportAssetOptions.ForceSynchronousImport);
EditorUtils.RepaintAllEditorWindows();
});
}
}
}
```
## Suggestions
### Refresh UI after visual changes
If the skill modifies anything visually in the Unity Editor (GameObjects, components, materials, etc.), call these two lines at the end of the tool method to apply changes to the UI immediately:
```csharp
AssetDatabase.Refresh(ImportAssetOptions.ForceSynchronousImport);
EditorUtils.RepaintAllEditorWindows();
```
### Refresh AssetDatabase after asset or script changes
If the skill creates, modifies, or deletes any asset file or .cs script on disk outside of Unity API, call this inside a `MainThread.Instance.Run()` block to ensure Unity picks up the changes:
```csharp
MainThread.Instance.Run(() =>
{
AssetDatabase.Refresh(ImportAssetOptions.ForceSynchronousImport);
});
```
### Use processing mechanic for long-running or domain-reload operations
Some operations take time to complete and may trigger a Unity domain reload (e.g. writing a .cs script, switching play mode, running tests, adding a package). In these cases the tool must NOT block and wait — instead it must:
1. Accept a `[RequestID] string? requestId` parameter.
2. Return `ResponseCallTool.Processing("...").SetRequestID(requestId)` immediately.
3. Schedule the actual work asynchronously via `MainThread.Instance.RunAsync(async () => { await Task.Yield(); ... })`.
4. When the operation finishes, send the final result by calling:
```csharp
_ = UnityMcpPluginEditor.NotifyToolRequestCompleted(new RequestToolCompletedData
{
RequestId = requestId,
Result = ResponseCallTool.Success("Operation completed.").SetRequestID(requestId)
});
```
If the operation may survive a domain reload (e.g. a .cs file was saved and Unity will recompile), use `ScriptUtils.SchedulePostCompilationNotification(requestId, filePath, operationType)` instead of calling `NotifyToolRequestCompleted` directly — it persists the pending notification to `SessionState` and sends it automatically after the domain reload completes. For package install/removal or other non-compilation domain reloads use `PackageUtils.SchedulePostDomainReloadNotification(requestId, label, action, expectedResult)` the same way.
### Return structured data with a typed response
Prefer returning a structured data model over a plain string so the AI can parse individual fields. Declare a nested class with `[Description]` on each property and use `ResponseCallValueTool<T>` as return type:
```csharp
// Return type:
public ResponseCallValueTool<MyResult> MyTool(...)
{
return ResponseCallValueTool<MyResult>.Success(new MyResult
{
Name = go.name,
InstanceID = go.GetInstanceID()
}).SetRequestID(requestId);
}
// Data model:
public class MyResult
{
[Description("Name of the GameObject.")]
public string? Name { get; set; }
[Description("Unity instance ID of the GameObject.")]
public int InstanceID { get; set; }
}
```
For simpler cases that do not need async/processing, you may return the model directly (without `ResponseCallValueTool<T>`) and Unity-MCP will wrap it automatically.
### Validate inputs early and throw clearly
Always validate required parameters at the top of the method before any Unity API calls. Throw `ArgumentException` or `InvalidOperationException` with descriptive messages so the AI knows exactly what went wrong and can self-correct:
```csharp
if (string.IsNullOrEmpty(name))
throw new ArgumentException("Name cannot be null or empty.", nameof(name));
```
### Always use MainThread for Unity API calls
All Unity API calls (including `GameObject.Find`, `AssetDatabase`, `EditorUtility`, etc.) MUST run on the main thread. Wrap them in `MainThread.Instance.Run(() => { ... })` for synchronous operations, or `MainThread.Instance.RunAsync(async () => { ... })` when you need to await inside.
IvanMurzak/Unity-MCP 2,087
-
assets-shader-get-data
Get detailed data about a shader asset in the Unity project. Returns shader properties, subshaders, passes, compilation errors, and supported status. Use 'assets-find' tool with filter 't:Shader' to find shaders, or 'assets-shader-list-all' tool to list all shader names.
IvanMurzak/Unity-MCP 2,087
-
object-get-data
Get data of the specified Unity Object. Returns serialized data of the object including its properties and fields. If need to modify the data use 'object-modify' tool.
IvanMurzak/Unity-MCP 2,087
-
assets-refresh
Refreshes the AssetDatabase. Use it if any file was added or updated in the project outside of Unity API. Use it if need to force scripts recompilation when '.cs' file changed.
IvanMurzak/Unity-MCP 2,087
-
gameobject-destroy
Destroy GameObject and all nested GameObjects recursively in opened Prefab or in a Scene. Use 'gameobject-find' tool to find the target GameObject first.
IvanMurzak/Unity-MCP 2,087
-
gameobject-component-destroy
Destroy one or many components from target GameObject. Can't destroy missed components. Use 'gameobject-find' tool to find the target GameObject and 'gameobject-component-get' to get component details first.
IvanMurzak/Unity-MCP 2,087
-
gameobject-component-add
Add Component to GameObject in opened Prefab or in a Scene. Use 'gameobject-find' tool to find the target GameObject first. Use 'gameobject-component-list-all' tool to find the component type names to add.
IvanMurzak/Unity-MCP 2,087
-
assets-delete
Delete the assets at paths from the project. Does AssetDatabase.Refresh() at the end. Use 'assets-find' tool to find assets before deleting.
IvanMurzak/Unity-MCP 2,087
-
gameobject-component-get
Get detailed information about a specific Component on a GameObject. Returns component type, enabled state, and optionally serialized fields and properties. Use this to inspect component data before modifying it. Use 'gameobject-find' tool to get the list of all components on the GameObject.
IvanMurzak/Unity-MCP 2,087
-
gameobject-component-list-all
List C# class names extended from UnityEngine.Component. Use this to find component type names for 'gameobject-component-add' tool. Results are paginated to avoid overwhelming responses.
IvanMurzak/Unity-MCP 2,087
-
assets-get-data
Get asset data from the asset file in the Unity project. It includes all serializable fields and properties of the asset. Use 'assets-find' tool to find asset before using this tool.
IvanMurzak/Unity-MCP 2,087
-
editor-selection-set
Set the current Selection in the Unity Editor to the provided objects. Use 'editor-selection-get' tool to get the current selection first.
IvanMurzak/Unity-MCP 2,087
-
unity-initial-setup
Provides an initial setup for AI Skills, `unity-mcp-cli` command line tool installation
and everything else that is helpful to set up at the start of the project. Essential packages,
and basic configurations.
IvanMurzak/Unity-MCP 2,087
-
gameobject-modify
Modify GameObject fields and properties in opened Prefab or in a Scene. You can modify multiple GameObjects at once. Just provide the same number of GameObject references and SerializedMember objects.
IvanMurzak/Unity-MCP 2,087
-
package-list
List all packages installed in the Unity project (UPM packages). Returns information about each installed package including name, version, source, and description. Use this to check which packages are currently installed before adding or removing packages.
IvanMurzak/Unity-MCP 2,087