The skill is well-written but quite long (~300+ lines). The worked example is valuable but extensive. Some sections like 'Tone' repeat guidance Claude already follows (active voice, short paragraphs). The 'What this post-mortem does' commentary after the example adds meta-explanation that isn't strictly necessary. However, most content earns its place given the complexity of the task.

Extremely actionable: provides a concrete checklist of required inputs, a mandatory section structure with clear ordering, a complete worked example showing exactly what the output should look like, specific JIRA API posting instructions, and explicit rules for when to refuse. The worked example alone is a copy-paste-quality template.

The output flow is clearly sequenced (confirm inputs → confirm destination → draft → sign-off → offer handoff) with explicit validation gates: refuse without all four inputs, get sign-off before posting, and a feedback loop rule ('one iteration is normal, three is a smell'). The 'When NOT to use' section adds important boundary conditions. Destructive operations (posting to JIRA) have explicit approval gates.

The skill is a single monolithic file with no bundle files to offload content to. The worked example (~40 lines) and the detailed section descriptions could potentially be split into separate reference files. However, the content is well-organized with clear headers and the cross-reference to management-talk is well-signaled. For a skill of this length, some splitting would improve navigability.

Lists multiple specific concrete actions: writing the engineering record covering root cause, mechanism, fix, validation, and how the bug slipped through. Also specifies the audience (engineer) and that code identifiers are welcome.

Clearly answers both 'what' (write the canonical engineering record of a fixed bug covering root cause, mechanism, fix, validation) and 'when' (after a debug session lands a fix, before closing the ticket, with explicit trigger phrases and slash command).

Excellent coverage of natural trigger terms: '/post-mortem', 'postmortem', 'RCA', 'root cause analysis', 'document this fix', 'write up the root cause', 'close out this bug with a writeup'. These are terms engineers would naturally use.

Highly distinctive niche — post-mortem/RCA writeups for fixed bugs. The specific trigger terms like 'post-mortem', 'RCA', 'root cause analysis' and the timing context (after debug, before ticket close) make it unlikely to conflict with general documentation or debugging skills.