debug-agent

Plugin debug-agent from marketplace bmad-skills in mkellerman/bmad-skills. Commands read from the repo's manifest — 1 month ago.

Skills (12)

• debug-assert-analyze

  Identify missing assertions, preconditions, postconditions, and invariants in code. Use to add defensive programming that catches bugs early, makes code self-documenting, and surfaces violations before they cause hard-to-debug failures downstream. Trigger for: "add defensive checks", "make this code

• debug-delta-minimize

  Reduce a complex failing test case to the smallest possible reproduction that still triggers the bug. Use when a bug requires complex setup to reproduce, when you want to create a clean bug report, or when the reproduction case is too noisy to debug directly. Trigger for: "I need a minimal reproduct

• debug-inspect

  Comprehensive 6-phase Fagan inspection for systematic defect analysis — achieves 60-90% defect detection rates. Use for complex, critical, or hard-to-reproduce bugs that need thorough investigation. Trigger for: "I need a thorough bug analysis", P0/P1 incidents, bugs that keep coming back, "we've tr

• debug-instrument

  Design a strategic logging, metrics, and tracing plan for production debugging and observability. Use when production issues are hard to diagnose because there aren't enough logs, when setting up monitoring for a new service, or when existing logs are too noisy or not useful. Trigger for: "we can't

• debug-pattern-analysis

  Analyze commit history and codebase for systemic defect patterns, hotspots, and recurring issues. Use when multiple related bugs are appearing, when a component seems fragile, or when you want to understand the health of a codebase before a release. Trigger for: "we keep getting bugs in this area",

• debug-quick

  Rapid bug triage — classify severity and recommend next debugging steps. Use this skill immediately when a user reports a bug, error, crash, or unexpected behavior, even if they just say "something is broken" or "this isn't working." Gives the user a fast P0-P3 severity classification and clear next

• debug-report

  Generate a comprehensive debug report documenting all findings, analysis, and recommendations from a debugging session. Use at the end of any significant debugging effort to capture knowledge, communicate to stakeholders, and prevent recurrence. Trigger for: "write up what we found", "create a bug r

• debug-root-cause

  Root cause analysis using fishbone (Ishikawa) diagram and 5-Whys technique. Use when the symptom is known but the underlying cause is unclear, when bugs keep recurring after fixes, or when you need to understand *why* something failed — not just what failed. Trigger for: "we fixed it but it came bac

• debug-static-scan

  Comprehensive static analysis to find defects, security vulnerabilities, code smells, and quality issues without running the code. Use proactively before releases, during code review, or when a codebase feels brittle. Trigger for: "review this code for issues", "find security vulnerabilities", "code

• debug-validate-fix

  Verify that a proposed fix actually addresses the root cause and doesn't introduce regressions or side effects. Use before merging any significant bug fix, especially for P0/P1 issues. Trigger for: "does this fix look right", "will this cause regressions", "review my fix before I merge", "validate t

• debug-walkthrough-prep

  Generate a complete code walkthrough package for a team review session — agenda, materials, annotated code highlights, and review checklists. Use before significant code reviews, after complex bug fixes, when onboarding reviewers to a new area, or when a change is too large to review informally. Tri

• debug-wolf-fence

  Binary search debugging to isolate bug location in a large codebase. Use when you know a bug exists but don't know where — especially in large codebases, long execution paths, or complex data pipelines. Trigger for: "I don't know which part is broken", "the bug is somewhere in this 2000-line functio

Subagents (1)

• diana

  Debug Specialist and Root Cause Analyst. Activate Diana when the user needs help investigating a bug, performing systematic code inspection, analyzing root causes, validating a fix, or running any structured debugging workflow. Diana uses Fagan inspection (60-90% defect detection rate), fishbone ana

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