mcaf-dotnet-complexity

A .NET code-review aid that measures method complexity, maintainability, and how heavily classes depend on other code. .NET is Microsoft's platform for building applications, and cyclomatic complexity estimates how many decision paths a method has.

In plain words
What is it for?
Use it to configure CA1502, CA1505, and CA1506 analyzer rules, set complexity or coupling thresholds, and guide refactoring work in .NET repositories.
Why use it?
It helps teams find code that is difficult to understand or change before that code becomes a maintenance problem. It can also turn agreed complexity limits into checks during continuous integration, the automated build process.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/managedcode/dotpilot/mcaf-dotnet-complexity
Any agent
npx skills add managedcode/dotPilot --skill mcaf-dotnet-complexity
Clone the repo
git clone --depth 1 https://github.com/managedcode/dotPilot

Made for: Claude Code, Codex.

Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,011 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00052 $0.01011
Opus 5 $0.00026 $0.00505
Sonnet 5 $0.00010 $0.00202
Haiku 4.5 $0.00005 $0.00101

Measured 2d ago against content hash 01f48e5201f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mcaf-dotnet-complexity scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

.codex/skills/mcaf-dotnet-complexity/SKILL.md · 112 lines

How it starts

The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCAF: .NET Complexity

Trigger On

  • the team wants to find overly complex methods
  • cyclomatic complexity thresholds are needed in CI
  • maintainability metrics or coupling thresholds need to be configured

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

  • formatting-only work
  • generic analyzer setup with no complexity policy change

Inputs

  • the nearest AGENTS.md
  • current analyzer settings
  • current maintainability limits

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. Start with the built-in maintainability analyzers before reaching for non-standard tooling.
  2. Use these rules deliberately:
    • CA1502 for excessive cyclomatic complexity in methods
    • CA1505 for low maintainability index
    • CA1506 for excessive class coupling
    • CA1501 when inheritance depth is also part of the design problem
  3. Keep rule severity in the root .editorconfig.
  4. Keep metric thresholds in a checked-in CodeMetricsConfig.txt added as AdditionalFiles.
  5. Pair analyzer findings with MCAF maintainability limits in AGENTS.md.

Bootstrap When Missing

If complexity thresholds are not configured yet:

  1. Detect current state:
    • rg -n "CA1501|CA1502|CA1505|CA1506|CodeMetricsConfig" -g '.editorconfig' -g '*.csproj' -g 'Directory.Build.*' .
    • rg --files -g 'CodeMetricsConfig.txt'
  2. Add severity entries for CA1502, CA1505, CA1506, and CA1501 in root .editorconfig.
  3. Add checked-in CodeMetricsConfig.txt and include it as AdditionalFiles in project props.
  4. Keep maintainability limits aligned with AGENTS.md.
  5. Run dotnet build SOLUTION_OR_PROJECT and return status: configured or status: improved.
  6. If policy relies only on AGENTS.md limits with no analyzer gate by design, return status: not_applicable.

Read the full file on GitHub · 112 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 112 lines · 52 tokens per session scan A 01f48e5201f4

Subscribe to this mod's changes

mcaf-dotnet-complexity is a skill published in the GitHub repository managedcode/dotPilot (23 stars, last pushed 4mo ago), licensed MIT. It adds 52 tokens to every session and 1,011 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.