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Unit Testing Debugger

Seth HobsonCommunityCreated by Seth Hobson

  • Subagent
  • Review and audit
  • Software development
  • MIT
  • No issues found
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From the author

Debugging specialist for errors, test failures, and unexpected behavior. Use proactively when encountering any issues.
— the description by Seth Hobson

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

The unit-testing-debugger acts as a specialized agent for root cause analysis in software development. It follows a structured debugging process to identify, isolate, and resolve issues, ensuring that fixes address the underlying problem rather than just the symptoms. By analyzing error logs, stack traces, and code changes, the agent provides comprehensive diagnostic reports including evidence-based explanations, code fixes, and long-term prevention strategies.

What it does

  • Captures and analyzes error messages and stack traces.
  • Identifies reproduction steps for reported issues.
  • Isolates the specific location of code failures.
  • Proposes minimal, effective code fixes.
  • Verifies the solution and suggests prevention strategies.

When to use it

  • When encountering persistent test failures in your codebase.
  • When debugging unexpected application behavior or runtime errors.
  • When you need a structured approach to root cause analysis.
  • When you want to implement long-term fixes to prevent recurring bugs.

Advantages

  • Focuses on root cause analysis rather than quick patches.
  • Provides clear evidence to support diagnostic conclusions.
  • Includes actionable prevention recommendations.
  • Standardizes the debugging workflow for consistent results.

Usage examples

“My unit test for the user authentication module is failing with a null pointer exception. Can you help?”
The agent will analyze the stack trace, identify the null variable, suggest a code fix to handle the null state, and provide a test case to verify the fix.
“The application is crashing intermittently during data processing. Here are the logs.”
The agent will review the logs, hypothesize the cause of the intermittent failure, and suggest strategic logging or code changes to stabilize the process.

Install

  1. Download the subagent as a ZIP:

    https://autogineer.com/agent-skills/wshobson/unit-testing-debugger/download

  2. Extract the subagent file into .claude/agents in your project (use ~/.claude/agents for every project):

    mkdir -p .claude/agents && unzip -j unit-testing-debugger.zip 'unit-testing-debugger/debugger.md' -d .claude/agents

  3. Keep the LICENSE and ATTRIBUTION.md files from the ZIP with your copy.

Documentation by Seth Hobson

You are an expert debugger specializing in root cause analysis.

When invoked:

  1. Capture error message and stack trace

  2. Identify reproduction steps

  3. Isolate the failure location

  4. Implement minimal fix

  5. Verify solution works

Debugging process:

  • Analyze error messages and logs

  • Check recent code changes

  • Form and test hypotheses

  • Add strategic debug logging

  • Inspect variable states

For each issue, provide:

  • Root cause explanation

  • Evidence supporting the diagnosis

  • Specific code fix

  • Testing approach

  • Prevention recommendations

Focus on fixing the underlying issue, not just symptoms.

Files

Requirements and compatibility

Written for: Claude Code

Works with: Claude Code

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Security

No issues found by our static scan· No issues found

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Attribution and licence

Created by
Seth Hobson
Publisher
Seth Hobson (Community)
Source
wshobson/agents · plugins/unit-testing/agents/debugger.md · commit 4bde316
Licence
MIT License (redistribution allowed)
  • LICENSE (added by AutoGineer from LICENSE)
  • ATTRIBUTION.md (written by AutoGineer)
Synced

AutoGineer is not affiliated with or endorsed by Seth Hobson or Seth Hobson.

Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download unit-testing-debugger.zip