Introduction

The Model Context Protocol (MCP) is an emerging standard for integrating AI-driven tools into software development workflows. In this post, I’ll share how you can design contracts for an MCP server to automate code quality checks, generate API documentation, and manage dependencies—all with practical C# examples.

1. Code Quality Checker MCP Server

Purpose: Integrate with static analysis tools (like SonarQube or ESLint) to automate code reviews, enforce style guidelines, and generate actionable reports.

Key Features:

  • Static code analysis
  • Code style enforcement
  • Automated quality reports

Example Contract:

[McpServerToolType]
public static class CodeQualityTool
{
    [McpServerTool, Description("Analyze code quality.")]
    public static async Task<string> AnalyzeCode(string code)
    {
        // Integrate with a code quality tool (e.g., SonarQube)
        var analysisResult = await CodeQualityService.AnalyzeAsync(code);
        return analysisResult;
    }

    [McpServerTool, Description("Check code style.")]
    public static string CheckStyle(string code)
    {
        // Check code against style guidelines
        var styleIssues = CodeStyleService.CheckStyle(code);
        return string.join("\n", styleIssues);
    }
}

2. API Documentation Generator MCP Server

Purpose: Automatically extract code comments and annotations to generate up-to-date API documentation in Markdown, with optional Git integration.

Key Features:

  • Documentation extraction
  • Markdown generation
  • Version control integration

Example Contract:

[McpServerToolType]
public static class ApiDocTool
{
    [McpServerTool, Description("Generate API documentation.")]
    public static string GenerateDocumentation(string code)
    {
        // Extract comments and annotations
        var documentation = ApiDocService.ExtractDocumentation(code);
        // Convert to Markdown
        var markdown = MarkdownService.ConvertToMarkdown(documentation);
        return markdown;
    }

    [McpServerTool, Description("Update documentation in Git.")]
    public static async Task<string> UpdateDocumentationInGit(string repoUrl, string documentation)
    {
        // Commit and push documentation to Git
        var result = await GitService.UpdateDocumentationAsync(repoUrl, documentation);
        return result;
    }
}

3. Dependency Management MCP Server

Purpose: Keep your project dependencies secure and up-to-date by checking for outdated or vulnerable packages and automating updates.

Key Features:

  • Dependency checks
  • Automated updates
  • Security alerts

Example Contract:

[McpServerToolType]
public static class DependencyTool
{
    [McpServerTool, Description("Check project dependencies.")]
    public static async Task<string> CheckDependencies(string projectPath)
    {
        // Check for outdated or insecure dependencies
        var dependencyIssues = await DependencyService.CheckDependenciesAsync(projectPath);
        return string.join("\n", dependencyIssues);
    }

    [McpServerTool, Description("Update project dependencies.")]
    public static async Task<string> UpdateDependencies(string projectPath)
    {
        // Perform updates to dependencies
        var updateResult = await DependencyService.UpdateDependenciesAsync(projectPath);
        return updateResult;
    }
}

How to Document Your MCP Server

  1. Introduction: Explain the server’s purpose and benefits.
  2. Setup Instructions: Provide clear steps for setup and configuration.
  3. Code Examples: Include code snippets for each tool and describe their functionality.
  4. Usage Scenarios: Share real-world examples where the MCP server adds value.
  5. Conclusion: Summarize the advantages and encourage experimentation.

Conclusion

By designing clear contracts for your MCP server, you can automate essential development tasks, improve code quality, and streamline documentation and dependency management. Integrating AI-driven tools into your workflow not only saves time but also helps maintain high standards across your projects.

If you have questions or want to see more examples, let me know in the comments!

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