CtrlK
BlogDocsLog inGet started
Tessl Logo
SkillPublic

postmortem

/em:postmortem — Honest analysis of what went wrong. Use after a failed launch, missed quarter, or bad hire to run a blameless 5-Whys retrospective with a change register — e.g. dissecting why the Q3 release slipped six weeks.

68

Quality

85%

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

SKILL.md
Quality
Evals
Security

Quality

Content

81%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 is a highly actionable, well-sequenced methodology with exemplary concrete examples and a complete output template. Its main weakness is token efficiency: the motivational framing sections pad the skill without adding instructions Claude needs.

Suggestions

Trim 'Why Most Post-Mortems Fail' to 2-3 lines — the blame/whitewash contrast is useful framing but the current three paragraphs repeat the point the framework steps already enforce.

Condense 'The Tone of Good Post-Mortems' into a single example pair (blame vs. understanding sentence) and fold it into the framework or output-format section, since its guidance duplicates the blameless principles stated earlier.

If the skill grows, move the worked examples (5-Whys walkthrough, good/bad action items) into a references/ file and keep SKILL.md as the framework overview.

DimensionReasoningScore

Conciseness

The framework steps earn their tokens, but the 'Why Most Post-Mortems Fail' and 'The Tone of Good Post-Mortems' sections are motivational/editorial and restate the blamelessness point multiple times — more than the 'minor instances of over-explanation' that would justify a 4.

3 / 5

Actionability

For an instruction-only skill the guidance is fully concrete: a worked good-vs-bad 5-Whys example, specific action items with named owners and dates ('Ravi owns rewriting qualification criteria by March 15...'), and a copy-paste-ready output format template including the change-register table.

5 / 5

Workflow Clarity

Seven clearly sequenced steps with explicit validation checkpoints — the root-cause test ('Could you prevent recurrence with a specific, concrete change?'), per-action verification requirements, and a dedicated Step 7 verification date. This is an analytic rather than destructive/batch skill, so no cap applies.

5 / 5

Progressive Disclosure

A single self-contained file with well-organized sections, clear headers, and the output template under its own heading; at ~190 lines it exceeds the under-50-lines simple-skill exception, and the worked examples could eventually move to a reference file, leaving minor organization gaps rather than a fully clean split.

4 / 5

Total

17

/

20

Passed

Description

83%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.

A strong description: it states concrete capabilities, gives explicit 'Use after...' trigger scenarios with a vivid example, and carves out a recognizable niche. Its only weaknesses are the slightly abstract opening phrase and a few missing synonym triggers.

DimensionReasoningScore

Specificity

The description names several concrete actions — 'run a blameless 5-Whys retrospective with a change register' — but the leading phrase 'Honest analysis of what went wrong' is somewhat abstract, leaving minor gaps in coverage rather than the comprehensive action list of a 5.

4 / 5

Completeness

It explicitly answers both what ('run a blameless 5-Whys retrospective with a change register') and when ('Use after a failed launch, missed quarter, or bad hire') with concrete trigger phrases, matching the top anchor exactly.

5 / 5

Trigger Term Quality

Natural trigger phrases like 'failed launch', 'missed quarter', 'bad hire', 'retrospective', and 'Q3 release slipped six weeks' give good keyword coverage, though common variants such as 'incident review', 'post-mortem', or 'retro' are missing.

4 / 5

Distinctiveness Conflict Risk

The niche (blameless post-mortem with a change register) and its triggers are distinct from most skills, but 'honest analysis of what went wrong' is broad enough to carry minor overlap risk with general incident-review or retrospective skills.

4 / 5

Total

17

/

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

alirezarezvani/claude-skills

Path

c-level-advisor/executive-mentor/skills/postmortem/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.