Individual skill
regression-root-cause-analyzer
Locate root causes of failing regression tests by analyzing code changes, error messages, and test dependencies. Use when regression tests start failing after code changes, investigating test failures in CI/CD, debugging flaky tests, or understanding why previously passing tests now fail. Analyzes git diffs, stack traces, test output, and dependency changes to produce structured markdown reports ranking likely causes. Triggers when users ask to find why tests are failing, debug regression failures, investigate test breakage, or analyze failing test suites.
skills/regression-root-cause-analyzer/SKILL.md
Source commit 4f38503747e0617504bce5329283ef837d375c09
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 6, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
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
- devops Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
SKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesSKILL.mdcore · 13,632 bytesreferences/failure-patterns.mddoc · 7,014 bytes
Read excerpt
# Regression Root Cause Analyzer
## Overview
Systematically investigate failing regression tests to identify root causes by analyzing code changes, error messages, test dependencies, and common failure patterns.
## Workflow
### 1. Gather Initial Information
Collect essential details about the test failure:
**Test failure details:**
- Which test(s) are failing?