CtrlK
BlogDocsLog inGet started
Tessl Logo
SkillPublic

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes

53

Quality

67%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide
SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/systematic-debugging/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

70%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body delivers a well-sequenced, validated debugging workflow with strong feedback loops and checklists, and mostly concrete guidance. Its weaknesses are meaningful redundancy across the Red Flags/Signals/Rationalizations sections and progressive disclosure that signals three reference files which do not exist in the bundle.

Suggestions

Ship the three referenced files (root-cause-tracing.md, defense-in-depth.md, condition-based-waiting.md) in a references/ directory — or remove the dead pointers and inline the essential technique summaries.

Consolidate the Red Flags, partner Signals, and Common Rationalizations sections into one table; the 3+ failed-fixes rule currently appears four times.

Move the niche macOS codesign/secrets instrumentation example into a reference file, keeping only the generic boundary-logging pattern inline.

DimensionReasoningScore

Conciseness

Mostly efficient process guidance that doesn't explain basics Claude already knows, but noticeably repetitive: the '3+ fixes → question architecture' rule appears in four places (Phase 4.4, 4.5, Red Flags, and the Rationalizations table), the 'Iron Law' section duplicates the Overview's core principle, and Red Flags, partner Signals, and Common Rationalizations cover overlapping ground three times. Not anchor 2 only because each section still carries some distinct directive value; not anchor 4 because the redundancy is substantial rather than minor.

3 / 5

Actionability

Mostly executable guidance: concrete directives per phase (read stack traces fully, git diff recent changes), an executable bash instrumentation example for multi-component systems, and explicit verify steps. Minor gaps: the instrumentation procedure block ('For EACH component boundary: Log what data enters...') is pseudocode, and the referenced `superpowers:test-driven-development` / `superpowers:verification-before-completion` skills are external dependencies that may not resolve. Not anchor 5 because the pseudocode block and external skill references leave small execution gaps.

4 / 5

Workflow Clarity

The Four Phases are strictly sequenced ("You MUST complete each phase before proceeding to the next") with explicit validation checkpoints at each phase: 'Verify Before Continuing' in Phase 3, 'Verify Fix / no other tests broken' in Phase 4, a feedback loop on failure (return to Phase 1 with new information), an escalation rule at 3+ failed fixes, and checklists (Red Flags list, Quick Reference table). This matches anchor 5's clear sequence, explicit validation, error-recovery feedback loops, and checklists.

5 / 5

Progressive Disclosure

Sections are well-organized with clear headers, and references are one level deep and clearly signaled ('See root-cause-tracing.md in this directory', 'Supporting Techniques' list). However, scored against the actual bundle structure: no references/, scripts/, or assets/ directories exist, and all three referenced files (root-cause-tracing.md, defense-in-depth.md, condition-based-waiting.md) are missing, so the pointers are dead. The niche multi-layer codesign example is also inlined where a reference file would fit. Not anchor 4 because dead references are a real navigation failure, not a minor organization gap; not anchor 2 because the body's own structure is good and references are prominently signaled rather than buried.

3 / 5

Total

15

/

20

Passed

Description

47%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is a strong, explicit trigger clause with natural keywords, but it is purely a 'when' statement. It never says what the skill does (e.g., systematic root-cause investigation, hypothesis testing, phased debugging), leaving both specificity and completeness weak.

Suggestions

Add a 'what' clause naming the concrete capabilities, e.g., 'Guides systematic root-cause investigation through four phases: evidence gathering, pattern comparison, hypothesis testing, and verified fixes.'

Broaden trigger term coverage with natural synonyms users say, such as 'error', 'crash', 'failing tests', or 'not working as expected'.

State the core behavioral commitment explicitly (investigate root cause before attempting any fix) so the description answers 'what' without relying on the body.

DimensionReasoningScore

Specificity

The description names the domain ("any bug, test failure, or unexpected behavior") but states zero concrete capability actions — nothing like 'investigates root causes' or 'traces failures' is explicitly stated. It sits above anchor 1 (not entirely vague abstract language; concrete domain terms are present) but matches anchor 2: domain named, actions minimal or generic.

2 / 5

Completeness

Only the 'when' is present ("Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes") with no statement of what the skill does — this exactly matches anchor 2's example ("Use when working with documents"). Not anchor 3, which requires a clear 'what'; not anchor 1, since the 'when' clause is explicit and specific rather than extremely vague.

2 / 5

Trigger Term Quality

"bug", "test failure", and "unexpected behavior" are natural phrases users would say when they need this skill. Not anchor 5: common variations like "error", "crash", "broken", "failing tests", or "not working" are missing.

4 / 5

Distinctiveness Conflict Risk

The trigger conditions and especially "before proposing fixes" carve out a clear debugging niche distinct from general testing or verification skills. Minor overlap risk with adjacent skills (e.g., test-writing or code-review skills that also trigger on test failures) keeps it below anchor 5.

4 / 5

Total

12

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

obra/superpowers

Path

skills/systematic-debugging/SKILL.md

Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.