name: package-remove description: Uninstall a UPM package from the Unity project. Modifies manifest.json and may trigger a domain reload — the final result is delivered after the reload via the request's requestId. Built-in packages and packages that are dependencies of others cannot be removed. Use 'package-list' to list installed packages first.

Package Manager / Remove

Remove (uninstall) a package from the Unity project. This removes the package from the project's manifest.json and triggers package resolution. Note: Built-in packages and packages that are dependencies of other installed packages cannot be removed. Note: Package removal may trigger a domain reload. The result will be sent after the reload completes. Use 'package-list' tool to list installed packages first.

Inputs

• packageId — package name (e.g. com.unity.textmeshpro). A trailing @<version> is stripped automatically before being passed to Client.Remove, so accidental versioned IDs still work.

Behavior

First verifies the package is installed via an offline Client.List — returns a clear PackageNotFound error if not. On removal failure, surfaces Unity's error message. On success, schedules a post-domain-reload notification so the response is delivered after Unity finishes the resolution.

How to Call

unity-mcp-cli run-tool package-remove --input '{
  "packageId": "string_value"
}'

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

unity-mcp-cli run-tool package-remove --input-file args.json

Or pipe via stdin (recommended):

unity-mcp-cli run-tool package-remove --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

Input JSON Schema

{
  "type": "object",
  "properties": {
    "packageId": {
      "type": "string"
    }
  },
  "required": [
    "packageId"
  ]
}

Output

This tool does not return structured output.