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Agent skill

Meziantou Analyzer

by managedcode in managedcode/dotnet-skills

Use the open-source free Meziantou.Analyzer package for design, usage, security, performance, and style rules in .NET.

MITAuto-check passedAgent Workflows

Install Meziantou Analyzer

skills CLI
$ npx skills add managedcode/dotnet-skills --skill meziantou-analyzer -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install managedcode/dotnet-skills meziantou-analyzer --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/managedcode/dotnet-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/catalog/Tools/Meziantou-Analyzer/skills/meziantou-analyzer .claude/skills/meziantou-analyzer && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
meziantou-analyzer
GitHub stars
486
Token cost
~1.1k tokens
SKILL.md length
463 words
Files
5 (incl. references)
Skills in repo
81
Repo updated
First seen
Licence
MIT

At a glance

Use the open-source free Meziantou.Analyzer package for design, usage, security, performance, and style rules in .NET.

  • Works in 3 steps: Read the nearest AGENTS.md and confirm… → Run this skill's Workflow through the… → Return the Required Result Format with…
  • A repo wants broader analyzer coverage with a single NuGet package
  • SKILL.md covers Trigger On, Value, Do Not Use For and Inputs, plus 8 more sections
  • Calls dotnet and rg

What it does

Meziantou Analyzer is an agent skill from managedcode/dotnet-skills. Use the open-source free Meziantou.Analyzer package for design, usage, security, performance, and style rules in .NET. Use when a repo wants broader analyzer coverage with a single NuGet package. USE FOR: the repo uses or wants Meziantou.Analyzer; the team wants one analyzer pack that covers design, usage, security, performance, and style. DO NOT USE FOR: repos that already enforce an overlapping analyzer baseline and do not want extra diagnostics; formatting-only work. INVOKES: inspect the repository context…

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `manifest.json`, `references/config.md` and `references/meziantou-analyzer.md`). Compatibility notes: Requires a .NET SDK-based repository; respects the repo's AGENTS.md commands first.

It sits in Agent Workflows, covering Codebase knowledge for agents and Plain language and style rules. It works with .NET. The repository describes itself as: Installable .NET skill catalog and CLI for Codex, Claude Code, GitHub Copilot, and Gemini. The licence is MIT.

When your agent uses it

  • A repo wants broader analyzer coverage with a single NuGet package
  • : the repo uses
  • Wants Meziantou.Analyzer
  • The team wants one analyzer pack that covers design

Example prompts

  • “/meziantou-analyzer”

Requirements

  • Compatibility (from SKILL.md): Requires a .NET SDK-based repository; respects the repo's `AGENTS.md` commands first.

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Read the nearest AGENTS.md and confirm scope and constraints.
  2. Run this skill's Workflow through the Ralph Loop until outcomes are acceptable.
  3. Return the Required Result Format with concrete artifacts and verification evidence.

What it can do on your machine

Read from SKILL.md and the folder at commit 535dd55. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • dotnet
    • rg

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires a .NET SDK-based repository; respects the repo's `AGENTS.md` commands first.

    From compatibility in the SKILL.md frontmatter.

Context cost

Meziantou Analyzer loads about 1.1k tokens when it runs, and up to ~3.8k if it reads all its reference files. Until then it costs about 160 tokens; SKILL.md has 463 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~160
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from managedcode/dotnet-skills at commit 535dd55, republished under its MIT licence (© managedcode). 463 words, ~1,084 tokens.

Download SKILL.mdSave it as .claude/skills/meziantou-analyzer/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
meziantou-analyzer
description
Use the open-source free `Meziantou.Analyzer` package for design, usage, security, performance, and style rules in .NET. Use when a repo wants broader analyzer coverage with a single NuGet package. USE FOR: the repo uses or wants Meziantou.Analyzer; the team wants one analyzer pack that covers design, usage, security, performance, and style. DO NOT USE FOR: repos that already enforce an overlapping analyzer baseline and do not want extra diagnostics; formatting-only work. INVOKES: inspect the repository context, edit targeted files, and run relevant build, test, lint, or validation commands when changes are made.
compatibility
Requires a .NET SDK-based repository; respects the repo's `AGENTS.md` commands first.

Meziantou.Analyzer

Trigger On

  • the repo uses or wants Meziantou.Analyzer
  • the team wants one analyzer pack that covers design, usage, security, performance, and style

Value

  • produce a concrete project delta: code, docs, config, tests, CI, or review artifact
  • reduce ambiguity through explicit planning, verification, and final validation skills
  • leave reusable project context so future tasks are faster and safer

Do Not Use For

  • repos that already enforce an overlapping analyzer baseline and do not want extra diagnostics
  • formatting-only work

Inputs

  • the nearest AGENTS.md
  • current analyzer packages
  • .editorconfig

Quick Start

  1. Read the nearest AGENTS.md and confirm scope and constraints.
  2. Run this skill's Workflow through the Ralph Loop until outcomes are acceptable.
  3. Return the Required Result Format with concrete artifacts and verification evidence.

Workflow

  1. Add Meziantou.Analyzer when the repo wants broader rules than the SDK baseline.
  2. Keep rule severity in the repo-root .editorconfig.
  3. Review overlaps with SDK analyzers and Roslynator before mass-enabling everything as errors.

Bootstrap When Missing

If Meziantou.Analyzer is not configured yet:

  1. Detect current state:
    • rg -n "Meziantou\\.Analyzer" -g '*.csproj' .
  2. Add the package to the intended scope (project-level or shared props strategy):
    • dotnet add PROJECT.csproj package Meziantou.Analyzer
  3. Set severity in root .editorconfig for the enabled MAxxxx rules.
  4. Keep overlap with SDK analyzers and Roslynator explicit to avoid duplicate noise.
  5. Run dotnet build SOLUTION_OR_PROJECT and return status: configured or status: improved.
  6. If the repo intentionally keeps a smaller analyzer surface, return status: not_applicable.

Deliver

  • explicit Meziantou package setup
  • repo-owned severity and warning policy

Validate

  • the added rules are understood by the team
  • CI runs stay actionable instead of noisy
Show full SKILL.md (194 more words)Show less

Ralph Loop

Use the Ralph Loop for every task, including docs, architecture, testing, and tooling work.

  1. Plan first (mandatory):
    • analyze current state
    • define target outcome, constraints, and risks
    • write a detailed execution plan
    • list final validation skills to run at the end, with order and reason
  2. Execute one planned step and produce a concrete delta.
  3. Review the result and capture findings with actionable next fixes.
  4. Apply fixes in small batches and rerun the relevant checks or review steps.
  5. Update the plan after each iteration.
  6. Repeat until outcomes are acceptable or only explicit exceptions remain.
  7. If a dependency is missing, bootstrap it or return status: not_applicable with explicit reason and fallback path.
Required Result Format
  • status: complete | clean | improved | configured | not_applicable | blocked
  • plan: concise plan and current iteration step
  • actions_taken: concrete changes made
  • validation_skills: final skills run, or skipped with reasons
  • verification: commands, checks, or review evidence summary
  • remaining: top unresolved items or none

For setup-only requests with no execution, return status: configured and exact next commands.

Load References

Example Requests

  • "Add Meziantou analyzers to the repo."
  • "Use Meziantou for extra quality and security checks."

© managedcode, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (references) in catalog/Tools/Meziantou-Analyzer/skills/meziantou-analyzer of managedcode/dotnet-skills.

  • SKILL.md
  • manifest.json
  • references/config.md
  • references/meziantou-analyzer.md
  • references/rules.md

Open the folder on GitHubat commit 535dd55

Compare with similar skills

Meziantou Analyzer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Meziantou Analyzer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Meziantou Analyzer this skillmanagedcode/dotnet-skills486—~1.1kAutomated safety check: PassMIT
Mcaf Dotnet Analyzer Configmanagedcode/Storage138—~1.2kAutomated safety check: PassMIT
Mcaf Dotnet Meziantou Analyzermanagedcode/Storage138—~955Automated safety check: PassMIT
Mcaf Dotnet Stylecop Analyzersmanagedcode/Storage138—~1kAutomated safety check: PassMIT
Microsoft Skill CreatorMicrosoftDocs/mcp1.9k3 repos~2.1kAutomated safety check: PassCC-BY-4.0
Copilot Session Failure Analysisdotnet/maui23k—~3.4kAutomated safety check: PassMIT

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Works with

Categories

Questions about Meziantou Analyzer

What does Meziantou Analyzer do?

Use the open-source free Meziantou.Analyzer package for design, usage, security, performance, and style rules in .NET. Meziantou Analyzer is an agent skill from managedcode/dotnet-skills.NET.

When should I use Meziantou Analyzer?

Meziantou Analyzer fits situations like: A repo wants broader analyzer coverage with a single NuGet package; : the repo uses; wants Meziantou.Analyzer; the team wants one analyzer pack that covers design.

How do I install Meziantou Analyzer in Claude Code?

Run `npx skills add managedcode/dotnet-skills --skill meziantou-analyzer -a claude-code`. Or copy the skill folder (catalog/Tools/Meziantou-Analyzer/skills/meziantou-analyzer in managedcode/dotnet-skills) into .claude/skills/meziantou-analyzer in your project. Claude Code loads it when a task matches its description.

How do I install Meziantou Analyzer in Codex?

Run `npx skills add managedcode/dotnet-skills --skill meziantou-analyzer -a codex`. Or copy the skill folder (catalog/Tools/Meziantou-Analyzer/skills/meziantou-analyzer in managedcode/dotnet-skills) into .agents/skills/meziantou-analyzer in your project. Codex loads it when a task matches its description.

Can I use Meziantou Analyzer in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add managedcode/dotnet-skills --skill meziantou-analyzer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/meziantou-analyzer, .gemini/skills/meziantou-analyzer, .github/skills/meziantou-analyzer and .opencode/skills/meziantou-analyzer in your project.

What does Meziantou Analyzer need to run?

Going by SKILL.md and its folder, Meziantou Analyzer needs the command-line tools its instructions call (dotnet and rg). Compatibility (from SKILL.md): Requires a .NET SDK-based repository; respects the repo's `AGENTS.md` commands first..

Does Meziantou Analyzer access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Meziantou Analyzer safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Meziantou Analyzer use?

Meziantou Analyzer is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Meziantou Analyzer use?

About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.7k tokens, read only when the agent opens those files.

What are the alternatives to Meziantou Analyzer?

Skills that share tags, products or a category with Meziantou Analyzer: Mcaf Dotnet Analyzer Config (managedcode/Storage, 138 stars), Mcaf Dotnet Meziantou Analyzer (managedcode/Storage, 138 stars), Mcaf Dotnet Stylecop Analyzers (managedcode/Storage, 138 stars) and Microsoft Skill Creator (MicrosoftDocs/mcp, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Meziantou Analyzer?

managedcode (a GitHub organization) maintains it in managedcode/dotnet-skills, which has 486 GitHub stars. The repository holds 81 skills in this directory. The repository was last updated on October 7, 2026.

Source: managedcode/dotnet-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.