Individual skill
behavioral-mutation-analyzer
Analyzes surviving mutants from mutation testing to identify why tests failed to detect them. Takes repository code, test suite, and mutation testing results as input. Identifies root causes including insufficient coverage, equivalent mutants, weak assertions, and missed edge cases. Automatically generates actionable test improvements and new test cases. Use when analyzing mutation testing results, improving test suite effectiveness, investigating low mutation scores, generating tests to kill surviving mutants, or enhancing test quality based on mutation analysis.
skills/behavioral-mutation-analyzer/SKILL.md
Source commit 4f38503747e0617504bce5329283ef837d375c09
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Instructions only
- Last checked
- Nov 11, 2026
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Repository context
- Repository stars (not skill ratings)
- 260
- Repository last updated
- Aug 21, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- claude-skills Repository topic
- metaprogramming Repository topic
- software-development Repository topic
- software-engineering Repository topic
- claude Repository topic
- claude-code Repository topic
- testing Derived category
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Read excerpt
# Behavioral Mutation Analyzer
## Overview
This skill systematically analyzes surviving mutants from mutation testing to understand test suite weaknesses and automatically generate improvements. It identifies why mutants survived, categorizes root causes, and produces actionable test enhancements to increase mutation detection rates.
## Analysis Workflow
### Step 1: Input Collection and Validation
Gather required inputs and verify completeness:
**Required Inputs:**
- Repository source code (path or files)