debugging - Systematic four-phase debugging
Investigates technical issues systematically, identifies root causes, tests hypotheses, and implements verified fixes.
Tags
Updated: 2026-10-03Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Investigate root causes
- Reproduce bugs reliably
- Compare working examples
- Trace data flow
- Test single hypotheses
- Create failing tests
- Implement root-cause fixes
- Verify fixes and cleanup
- Question architecture after failures
Inputs
- Technical issue details
- Error messages and stack traces
- Bug reproduction steps
- Recent code changes
- Source code and references
- Runtime logs and traces
- Environment and configuration
- User reproduction action
Outputs
- Root-cause analysis
- Diagnostic instrumentation
- Session-scoped debug logs
- Failing test case
- Code fix
- Verification results
- Removed debug artifacts
- Architecture discussion
Requirements
- Agent context
- Read, Write, Edit, Bash, Glob, and Grep tools
- Composer 2.5 Fast model