DotNetMCP

What is DotNetMCP?

DotNetMCP gives every AI coding assistant deep .NET expertise through the Model Context Protocol. It works with Claude Code, Cursor, Windsurf, and any MCP-compatible tool. Instead of relying on the AI's training data alone (which may be outdated or incomplete), DotNetMCP feeds your assistant curated, up-to-date .NET knowledge in real time -- covering modern patterns, performance optimization, security best practices, and migration strategies.

Built for the community: DotNetMCP is sponsored by Noundry and free for all .NET developers. No signup, no API keys, no rate limits. Just connect and go.

50+

Expert Guides

24+

Anti-Patterns

Free

No API Key

.NET 10

Latest Coverage

Available MCP Tools

Your AI assistant gains these capabilities automatically when DotNetMCP is connected.

search_guides

Search 50+ expert guides covering EF Core, minimal APIs, authentication, performance, testing, and more.

detect_antipatterns

Identify 24+ common .NET anti-patterns including N+1 queries, sync-over-async, service locator abuse, captive dependencies, and more.

check_security

Review code for OWASP vulnerabilities, insecure configurations, and .NET-specific security issues.

plan_migration

Generate migration plans with risk assessments for upgrading from .NET 6/7/8 to .NET 9/10.

optimize_performance

Analyze code for performance issues. Covers Span<T>, pooling, caching strategies, and async patterns.

review_code

Expert code review for .NET conventions, design patterns, SOLID principles, and C# 12-14 features.

Knowledge Coverage

Web & APIs

Minimal APIs
ASP.NET Core MVC
Blazor (Server & WASM)
gRPC Services
SignalR Real-time

Data & ORM

Entity Framework Core
Dapper & Micro-ORMs
Database Migrations
Query Optimization
Multi-tenancy

Architecture

Clean Architecture
CQRS & MediatR
Microservices
Domain-Driven Design
Vertical Slices

DevOps & Cloud

Docker & Containers
CI/CD Pipelines
Azure & AWS
Health Checks
Observability

Anti-Pattern Detection

DotNetMCP helps your AI assistant catch common mistakes before they ship:

N+1 Query Problems

sync Over Async

DI Captive Dependencies

GC Allocation Pressure

EF Tracking Misuse

HTTP Client Leaks

SL Service Locator

+20 More Patterns

Setup by IDE

Claude Code

$ claude mcp add dotnetmcp
https://dotnetmcp.com/sse

One command. Works immediately.

Cursor & Windsurf

// .cursor/mcp.json
{ "mcpServers": {
  "dotnetmcp": {
    "url": "https://dotnetmcp.com/sse"
  }
}}

Add to MCP config. Restart IDE.

Claude Desktop

// claude_desktop_config.json
{ "mcpServers": {
  "dotnetmcp": {
    "url": "https://dotnetmcp.com/sse"
  }
}}

Add to config. Restart app.

Real-World Use Cases

Upgrading a .NET 6 project to .NET 10

DotNetMCP provides a step-by-step migration plan with breaking change alerts, deprecated API replacements, and new feature recommendations.

> Help me migrate this project from .NET 6 to .NET 10

[dotnetmcp:plan_migration]

Migration plan generated: 12 steps, 3 high-risk changes...

Catching performance issues

Detects anti-patterns like N+1 queries, sync-over-async calls, and allocation-heavy code before code review.

> Review this EF Core repository for performance issues

[dotnetmcp:detect_antipatterns]

Found: N+1 query in GetOrdersWithItems(), missing AsNoTracking()...

Learning modern C# patterns

Get accurate, up-to-date guidance with code examples following current best practices.

> What's the modern way to handle options validation?

[dotnetmcp:search_guides]

Use ValidateDataAnnotations() + ValidateOnStart()...