Kursach_StealthAction/.opencode/skills/navigation-surface-add/SKILL.md

name	description	metadata
navigation-surface-add	Add and configure a `NavMeshSurface` component (from `com.unity.ai.navigation`) on a GameObject — or create a new GameObject to host it. Configure agent type, geometry-collection mode, layer mask, default area, and the box volume (size/center). Returns the GameObject reference and instanceId.	generated-by mcp-plugin-dotnet

Navigation / Add NavMeshSurface

Add a NavMeshSurface to a GameObject. A NavMeshSurface defines a region of the scene that is baked into a runtime NavMesh that agents can traverse. Use 'navigation-set-bake-settings' to tune the agent radius/height/slope/step and voxel size, then 'navigation-surface-bake' to bake.

Inputs

• gameObjectRef — optional GameObject to add the surface to. When omitted, a new GameObject is created.
• name — optional name for the new GameObject (default NavMesh Surface); ignored when gameObjectRef is given.
• agentTypeId — optional NavMesh agent-type id this surface bakes for (default 0 = Humanoid).
• collectObjects — optional geometry collection mode: 0 All, 1 Volume, 2 Children (default 0 All).
• defaultArea — optional default NavMesh area index applied to collected geometry (default 0 = Walkable).
• layerMask — optional include-layers bitmask for geometry collection (default -1 = Everything).
• size — optional box volume size (only used when collectObjects = Volume).
• center — optional box volume center offset.

Behavior

Adds (or reuses) a NavMeshSurface, assigns the configured properties, marks the scene dirty, repaints, and returns the GameObject reference, the surface component reference, and the instanceId. Runs on the Unity main thread.

How to Call

unity-mcp-cli run-tool navigation-surface-add --input '{
  "gameObjectRef": "string_value",
  "name": "string_value",
  "agentTypeId": 0,
  "collectObjects": 0,
  "defaultArea": 0,
  "layerMask": 0,
  "size": "string_value",
  "center": "string_value"
}'

For complex input (multi-line strings, code), save the JSON to a file and use:

unity-mcp-cli run-tool navigation-surface-add --input-file args.json

Or pipe via stdin (recommended):

unity-mcp-cli run-tool navigation-surface-add --input-file - <<'EOF'
{"param": "value"}
EOF

Troubleshooting

If unity-mcp-cli is not found, either install it globally (npm install -g unity-mcp-cli) or use npx unity-mcp-cli instead. Read the /unity-initial-setup skill for detailed installation instructions.

Input

Name	Type	Required	Description
gameObjectRef	any	No	Optional GameObject to add the NavMeshSurface to. When omitted, a new GameObject is created.
name	string	No	Name for the new GameObject (ignored when gameObjectRef is provided).
agentTypeId	integer	No	NavMesh agent-type id this surface bakes for (0 = Humanoid by default).
collectObjects	integer	No	Geometry collection mode: 0 = All, 1 = Volume, 2 = Children.
defaultArea	integer	No	Default NavMesh area index applied to collected geometry (0 = Walkable).
layerMask	integer	No	Include-layers bitmask for geometry collection (-1 = Everything).
size	any	No	Box volume size (used only when collectObjects = Volume).
center	any	No	Box volume center offset.

Input JSON Schema

{
  "type": "object",
  "properties": {
    "gameObjectRef": {
      "$ref": "#/$defs/AIGD.GameObjectRef"
    },
    "name": {
      "type": "string"
    },
    "agentTypeId": {
      "type": "integer"
    },
    "collectObjects": {
      "type": "integer"
    },
    "defaultArea": {
      "type": "integer"
    },
    "layerMask": {
      "type": "integer"
    },
    "size": {
      "$ref": "#/$defs/UnityEngine.Vector3"
    },
    "center": {
      "$ref": "#/$defs/UnityEngine.Vector3"
    }
  },
  "$defs": {
    "UnityEngine.EntityId": {
      "type": "string",
      "pattern": "^[0-9]+$"
    },
    "System.Type": {
      "type": "string"
    },
    "AIGD.GameObjectRef": {
      "type": "object",
      "properties": {
        "instanceID": {
          "$ref": "#/$defs/UnityEngine.EntityId",
          "description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
        },
        "path": {
          "type": "string",
          "description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
        },
        "name": {
          "type": "string",
          "description": "Name of a GameObject in hierarchy. Priority: 3."
        },
        "assetType": {
          "$ref": "#/$defs/System.Type",
          "description": "Type of the asset."
        },
        "assetPath": {
          "type": "string",
          "description": "Path to the asset within the project. Starts with 'Assets/'"
        },
        "assetGuid": {
          "type": "string",
          "description": "Unique identifier for the asset."
        }
      },
      "required": [
        "instanceID"
      ],
      "description": "Find GameObject in opened Prefab or in the active Scene."
    },
    "UnityEngine.Vector3": {
      "type": "object",
      "properties": {
        "x": {
          "type": "number"
        },
        "y": {
          "type": "number"
        },
        "z": {
          "type": "number"
        }
      },
      "required": [
        "x",
        "y",
        "z"
      ],
      "additionalProperties": false
    }
  }
}

Output

Output JSON Schema

{
  "type": "object",
  "properties": {
    "result": {
      "$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Editor.API.Tool_Navigation-SurfaceAddResponse"
    }
  },
  "$defs": {
    "AIGD.GameObjectRef": {
      "type": "object",
      "properties": {
        "instanceID": {
          "$ref": "#/$defs/UnityEngine.EntityId",
          "description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
        },
        "path": {
          "type": "string",
          "description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
        },
        "name": {
          "type": "string",
          "description": "Name of a GameObject in hierarchy. Priority: 3."
        },
        "assetType": {
          "$ref": "#/$defs/System.Type",
          "description": "Type of the asset."
        },
        "assetPath": {
          "type": "string",
          "description": "Path to the asset within the project. Starts with 'Assets/'"
        },
        "assetGuid": {
          "type": "string",
          "description": "Unique identifier for the asset."
        }
      },
      "required": [
        "instanceID"
      ],
      "description": "Find GameObject in opened Prefab or in the active Scene."
    },
    "UnityEngine.EntityId": {
      "type": "string",
      "pattern": "^[0-9]+$"
    },
    "System.Type": {
      "type": "string"
    },
    "AIGD.ComponentRef": {
      "type": "object",
      "properties": {
        "index": {
          "type": "integer",
          "description": "Component 'index' attached to a gameObject. The first index is '0' and that is usually Transform or RectTransform. Priority: 2. Default value is -1."
        },
        "typeName": {
          "type": "string",
          "description": "Component type full name. Sample 'UnityEngine.Transform'. If the gameObject has two components of the same type, the output component is unpredictable. Priority: 3. Default value is null."
        },
        "instanceID": {
          "$ref": "#/$defs/UnityEngine.EntityId",
          "description": "instanceID of the UnityEngine.Object. If this is '0', then it will be used as 'null'."
        }
      },
      "required": [
        "index",
        "instanceID"
      ],
      "description": "Component reference. Used to find a Component at GameObject."
    },
    "com.IvanMurzak.Unity.MCP.Editor.API.Tool_Navigation-SurfaceAddResponse": {
      "type": "object",
      "properties": {
        "gameObjectRef": {
          "$ref": "#/$defs/AIGD.GameObjectRef",
          "description": "Reference to the NavMeshSurface GameObject."
        },
        "surfaceRef": {
          "$ref": "#/$defs/AIGD.ComponentRef",
          "description": "Reference to the NavMeshSurface component."
        },
        "instanceId": {
          "$ref": "#/$defs/UnityEngine.EntityId",
          "description": "Instance id of the GameObject hosting the surface."
        },
        "gameObjectName": {
          "type": "string",
          "description": "Name of the GameObject."
        },
        "agentTypeId": {
          "type": "integer",
          "description": "Resolved agent-type id."
        },
        "collectObjects": {
          "type": "integer",
          "description": "Resolved geometry collection mode."
        },
        "defaultArea": {
          "type": "integer",
          "description": "Resolved default area index."
        },
        "success": {
          "type": "boolean",
          "description": "Whether the operation succeeded."
        }
      },
      "required": [
        "instanceId",
        "agentTypeId",
        "collectObjects",
        "defaultArea",
        "success"
      ]
    }
  },
  "required": [
    "result"
  ]
}