The .NET Code Quality and Security Tool Large-Scale AI Fixes You Can Trust

The alliance of objective static analysis and AI-powered fixing, to keep technical debt and security continuously under control. Every change analyzed, every agent fix verified by NDepend.

Download Trial ▶  Watch NDepend.AI (5 min)
  •   4.8 / 5, 24 reviews on Visual Studio Marketplace
  • Runs on your premises: your code never leaves your infrastructure
  • NDepend knows your code, the agent skips the search: up to 30% fewer tokens

Static analysis only? NDepend runs fully without AI. See the features ↓

  • For
  • AI-generated code
  • Legacy code
  • Handcrafted code
NDepend.AI run on eShopOnWeb 1h 31min · $52 · 10¢ per fix
Goal
496 / 511 issues fixed 97%
Issues 497 fixed 1 new
Technical debt −10d 6h paid off
Tests +531 644 run, all green
Coverage 45% → 98%
Quality gates 12 pass 0 fail, was 3
Change review 63 methods reviewed, 1 restored
Potential bug found

CatalogContextSeed.SeedAsync() rethrows after a successful retry: the caller sees the seed fail although it succeeded.

See the full report →More runs →

NEWNDepend.AI steers your coding agent
  • Visual Studio 2026, 2022 and earlier
  • VS Code and Rider with VisualNDepend
  • Azure DevOps, GitHub Actions and all CI/CD
  • All .NET versions, .NET Fx 4.x to .NET 11.0
  • NDepend runs on Windows, macOS and Linux

NDepend Steers Your Coding Agent
The Entropy Measurably Decreases

It pays off twice: agents imitate the code they read, so the lower the entropy, the better the code they write next.

Your coding agent aloneSteered by NDepend.AI
Which issues Agent aloneThe ones it spots in the code and in the build warnings With NDepend.AIExactly the set you choose with a C# LINQ query: a rule, the vulnerabilities, the new issues since a baseline… from NDepend rules, Roslyn Analyzers and ReSharper
Is it really fixed? Agent aloneThe agent says so, or you ask an AI to review the fixes With NDepend.AIA deterministic, token-free analysis decides: an issue counts as fixed only when NDepend no longer reports it
Subtle code behavior changes Agent aloneLost somewhere in a big diff With NDepend.AIAn AI reviews each changed method against its original version, and restores what should not have changed: 63 methods reviewed on eShopOnWeb, 1 restored
Issues added by the fixes Agent aloneUnnoticed, unless they show up as build warnings With NDepend.AICaught and repaired by the sweep that follows the fix rounds, without undoing the fixes
Staying on track Agent aloneIt can drift or stop early, then you prompt it again. Each session goes its own way With NDepend.AINo drift: fix rounds, each one followed by a build, the impacted tests and a new analysis. Two runs on the same code differ by less than 1%
Tests and coverage Agent aloneTests and a coverage measure only if you ask, maybe slow integration tests you don't notice With NDepend.AIAims for 100% coverage with fast unit tests that assert something. No integration tests unless you ask. A bug found while writing tests is reported, not swept under the rug
Tokens Agent aloneIt explores the code base to understand it With NDepend.AIThe agent gets each issue with its exact location, no exploring: up to 30% fewer tokens
At the end Agent aloneA big diff and the agent's summary With NDepend.AIA report: issues fixed, tests, coverage, quality gates, potential bugs, cost, and the technical debt delta that shows the entropy going down

NDepend.AI is optional. Nothing in NDepend calls an AI unless you run it, and your code never leaves your machine.

Choose How Much NDepend Steers

Your agent, your session, our MCP

NDepend.MCP.Server

You steer, your agent asks NDepend

  • Your agent queries the code model, the rules, the issues and the quality gates while you work
  • In Claude Code, Codex, Visual Studio 2026, VS Code with GitHub Copilot and JetBrains Junie
  • Open source: adapt it to your needs
Discover the MCP Server →
Your script, your pipeline

NDepend.Console

Your script asks NDepend for the issues

  • /IssueCheck and /QualityGateCheck analyze the code without building a report
  • Issues and quality gates status in JSON or SARIF
  • Exit codes an agent or a script can act on
Discover the console checks →

Same analysis, same rules, same baseline as in Visual Studio, VisualNDepend and your reports.

  • Works with
  • Claude Code
  • OpenAI Codex
  • GitHub Copilot
  • JetBrains Junie
  • Tell us if yours is missing: [email protected]

How It Works: Our Harness, Your Agent

1 Issue set selection through a C# LINQ query from i in Issues where i.Severity >= Severity.High select i 2 NDepend.AI harness next round Analyze Target Agentsessions Build · TestsCoverage Checkpoint AI review tests red → repair prompts edits 3 Your coding agent more to come Claude Code Codex Copilot Junie your machine · your subscription · your model build · tests · analyze Your code under improvement your repo, on your machine C#C#C# eShopOnWeb: 511 issues tool calls code knowledge NDepend.MCP.Server NDepend knows your code up to 30% fewer tokens report 4 Full report AI Assistant tab Before → after Change review Code diff Architecture
Issue set selection through a C# LINQ query: where i.Severity >= Severity.High
NDepend.AI harness
  1. Analyze
  2. Targetthe next batch of issues
  3. Agent sessionsyour agent: Claude Code, Codex, Copilot or Junie, with NDepend.MCP.Server
  4. Build · Tests · Coveragetests red → repair
  5. Checkpoint
next round
AI review, then the full report AI Assistant tab: before → after, change review, code diff, architecture

Watch the full run on eShopOnWeb

1h 31min
run duration
$52
Claude Code consumption
98%
covered by tests, from 45%
1
bug found
See this report live →
Static Analysis

Understand, Control and Share Your .NET Code Quality

The features 12,000+ companies rely on, in Visual Studio, VisualNDepend and your CI/CD pipeline.

Understand

See the Structure of Your Code

Navigate your code and make better structural decisions with the most powerful code dependency graph available in the developer tools space.

NDepend dependency graph in Visual Studio
Control

Keep Quality under Control since a Baseline

Focus on the issues, vulnerabilities and regressions introduced since a baseline, whoever wrote the code: your team or your agents. Quality gates written in C# pass or fail your build.

NDepend quality gates
Share

Share In-Depth Web Reports

Generated in seconds by a DevOps task, the report gives developers and management an all-in-one view: diff, issues, regressions, coverage and effort to fix.

NDepend code quality web report

And More Swipe to see all →

Why .NET Teams Choose NDepend

Private

The analysis runs on your premises. Your code never leaves your infrastructure.

Fast and Simple

Reports are generated in seconds, on Windows, Linux and macOS, from any CI/CD.

Customizable in C#

Rules and quality gates are C# LINQ queries, easy to adapt to what matters for your organization.

Focused on Progress

Fix what changed since a baseline instead of halting work for weeks on legacy issues.

More than 12 000 companies provide better .NET code with ndepend.

       
       
       
       
       
       
       

See what professional developers are saying about ndepend.

Scott Hanselman

Innovative

"NDepend is giving me insight into my apps that I hadn't had before. Once I realized the depth and breadth of the information I was looking at, I was like a kid in a candy shop."
Scott Hanselman Program Manager at Microsoft
Dror Helper

Daily Life Saver

"As someone who gets to work with other people code daily I found NDepend to be a real life saver in such cases."
Dror Helper, Freelance Consultant & Software Architect
David Shifflet

Architecture

"The issues NDepend raised for me seemed to be more related to architecture issues versus the other tools. It definitely gave me insight into what to refactor and how to reduce technical debt."
David Shifflet Senior Software Developer
Jeffrey Richter

Professional

"Wintellect is happy to recommend NDepend to its clients to use it internally when working on our customer's code."
Jeffrey Richter Wintellect co-founder, Author, Trainer

Reviews from around the web

"Tools like NDepend are required for teams dealing with proper code reviews, examining code when code is idle (like on weekends), or when you have a possible circular reference in play.

NDepend not only has a great static code analysis tool, but also provides a way for veteran developers and aspiring architects alike to adhere to coding standards along with a way to integrate a company's coding standards into the tool using CQLINQ.This is definitely a tool for advanced developers and one that I definitely recommend to anyone looking to analyze a code base."

By Jonathan Danylko. Read more at Danylkoweb, NDepend for Visual Studio

"NDepend found enough problems in my code. Some of them are really helpful. I like that NDepend found 10 classes which can be changed to structures. Structures are extremely effective from the memory pressure perspectives. This is especially important when we're talking about mobile applications."

Latest From The Blog

Your Agents Write Code Fast.
NDepend Keeps It Maintainable.

Try NDepend free on your own .NET code.

Download Trial