Skill

plan-lower-code-complexity

This skill should be used when reducing the code complexity threshold of the codebase. It lowers the CyclomaticComplexity threshold by 2, identifies methods that exceed the new limit, generates a brief with refactoring strategies, and creates a plan with tasks to fix all violations.

Install

npx claudepluginhub codyswanngt/lisa --plugin lisa-rails

Tool Access

This skill is limited to using the following tools:

ReadBashGlobGrep

Preview

Reduces the CyclomaticComplexity threshold by 2 and fixes all violations.

SKILL.md

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Last CommitMar 5, 2026

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Lower Code Complexity

Reduces the CyclomaticComplexity threshold by 2 and fixes all violations.

Step 1: Gather Requirements

Read current threshold from .rubocop.yml (Metrics/CyclomaticComplexity Max)

Calculate new threshold: current - 2 (e.g., 10 -> 8)

Run RuboCop and flog to find violations:

bundle exec rubocop --only Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity --format json 2>&1

bundle exec flog --all --group app/ 2>&1 | head -50

Note for each violation:

File path and line number
Method name
Current complexity score (RuboCop and/or flog)

If no violations at new threshold, report success and exit.

Step 2: Compile Brief and Delegate

Compile the gathered information into a structured brief:

Reduce CyclomaticComplexity threshold from [current] to [new]. Methods exceeding threshold (ordered by complexity): 1. [file:method_name] (complexity: X, target: [new]) - Line Y - flog score: Z 2. ... Configuration change: .rubocop.local.yml, Metrics/CyclomaticComplexity Max from [current] to [new] Refactoring strategies: extract methods, early returns, extract conditions, use lookup hashes, replace conditionals with polymorphism Verification: `bundle exec rubocop --only Metrics/CyclomaticComplexity --format simple 2>&1 | grep "offense" | wc -l` -> Expected: 0

Invoke /plan-execute with this brief to create the implementation plan.

Lower Code Complexity

Reduces the CyclomaticComplexity threshold by 2 and fixes all violations.

Step 1: Gather Requirements

Read current threshold from .rubocop.yml (Metrics/CyclomaticComplexity Max)
Calculate new threshold: current - 2 (e.g., 10 -> 8)

Run RuboCop and flog to find violations:

bundle exec rubocop --only Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity --format json 2>&1

bundle exec flog --all --group app/ 2>&1 | head -50

Note for each violation:
- File path and line number
- Method name
- Current complexity score (RuboCop and/or flog)

If no violations at new threshold, report success and exit.

Step 2: Compile Brief and Delegate

Compile the gathered information into a structured brief:

Reduce CyclomaticComplexity threshold from [current] to [new].

Methods exceeding threshold (ordered by complexity):
1. [file:method_name] (complexity: X, target: [new]) - Line Y
   - flog score: Z
2. ...

Configuration change: .rubocop.local.yml, Metrics/CyclomaticComplexity Max from [current] to [new]

Refactoring strategies: extract methods, early returns, extract conditions, use lookup hashes, replace conditionals with polymorphism

Verification: `bundle exec rubocop --only Metrics/CyclomaticComplexity --format simple 2>&1 | grep "offense" | wc -l` -> Expected: 0

Invoke /plan-execute with this brief to create the implementation plan.