find_unused_parameters

[references]

Finds likely-unused parameters with zero references inside their declaring method or constructor. Skips generated code and reflection-sensitive members by default.

Try it locally in the Glider playground

Parameters

Name	Type	Required	Description
scope	json	No	Optional scope. Omit scope to search the solution. When supplied, set mode to solution, project, document, or pathPrefix. project requires projectName. document requires filePath. pathPrefix requires pathPrefix. Paths can be absolute or relative to solutionRoot. Set includeExternal to true when the tool supports external symbols.
accessibility	string	No	Accessibility filter for the containing member. Default is 'Private,Internal'. Default: `"Private,Internal"`
excludeReflectionSensitive	boolean	No	Skip parameters on reflection- or activation-sensitive members. Default is true. Default: `true`
summaryOnly	boolean	No	Return grouped summaries without the paged parameter list. Default is false. Default: `false`
pathStyle	string	No	Path style: 'absolute' (default) or 'relative' (to solution root). Default: `"absolute"`
skip	number	No	Pagination offset. Default is 0. Default: `0`
take	number	No	Pagination size. Default is 200. Default: `200`
responseDetail	string	No	compact returns results and actionable state. full adds diagnostic metadata under responseDiagnostics. Default: `"compact"`

Examples

Replace sample paths and symbol keys with values from your workspace.

Find likely-unused private method parameters

Arguments 
{
  "accessibility": "Private,Internal"
}

Full MCP request

Full MCP request 
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "find_unused_parameters",
    "arguments": {
      "accessibility": "Private,Internal"
    }
  }
}

Illustrative response 
{
  "success": true,
  "totalCount": 1,
  "paging": {
    "total": 1
  },
  "items": [
    {
      "parameterName": "cancellationToken",
      "containingSymbol": "RefreshCacheAsync",
      "containingType": "CacheService",
      "filePath": "/path/to/CacheService.cs",
      "lineNumber": 54,
      "projectName": "MyProject"
    }
  ],
  "summary": {
    "byProject": [
      {
        "key": "MyProject",
        "count": 1
      }
    ]
  }
}

Summarize unused parameters in one project

Arguments 
{
  "scope": {
    "mode": "project",
    "projectName": "MyProject"
  },
  "summaryOnly": true
}

Full MCP request

Full MCP request 
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "find_unused_parameters",
    "arguments": {
      "scope": {
        "mode": "project",
        "projectName": "MyProject"
      },
      "summaryOnly": true
    }
  }
}

Response Notes

Returns likely-unused parameters, optionally summarized by containing project and member kind Results use top-level fields with success. Compact is the default; full adds responseDiagnostics. Both modes retain errors, coverage, partial state, and recovery advice.