The description names the domain (security incidents) and mentions specific actions like 'rapid triage' and 'initial response,' and references a specific methodology (NIST SP 800-61). However, it doesn't list multiple concrete actions beyond triage and initial response—it could be more specific about what actions it performs (e.g., classify severity, identify containment steps, document timeline, collect IOCs).

Clearly answers both 'what' (guide rapid triage and initial response to security incidents following NIST SP 800-61) and 'when' (explicit 'Use when...' clause with a thorough list of trigger scenarios). Both components are well-articulated.

Excellent coverage of natural trigger terms including both formal terms ('incident response,' 'indicators of compromise,' 'IOC,' 'triage') and colloquial phrases users would actually say ('we've been hacked,' 'breach,' 'compromised,' 'malware detected,' 'suspicious activity'). This is comprehensive and covers many natural variations.

The description carves out a clear niche—security incident triage and initial response following a specific framework (NIST SP 800-61). The trigger terms are specific to security incident response and unlikely to conflict with general security skills like vulnerability scanning or penetration testing.

The content is mostly efficient and well-structured, but includes some information Claude already knows (e.g., basic incident types, what IOCs are, common analysis techniques like checking process trees). The severity classification and incident type lists are somewhat standard knowledge but serve as useful checklists. The output template is lengthy but justified as a concrete deliverable.

Provides executable bash commands for evidence collection on both Linux and Windows, specific containment actions by category, a complete markdown report template that's copy-paste ready, and concrete checklists. The guidance is specific and directly usable.

The 5-step workflow is clearly sequenced with logical ordering (classify → contain → preserve → analyze → extract IOCs). The priorities are explicitly ordered, the evidence collection follows volatility order, and the containment step includes a critical validation warning about not powering off systems. The output template includes checklists for tracking completion.

The content is well-organized with clear sections and headers, but it's a fairly long monolithic document (~150 lines) with no bundle files to offload detailed content. The IOC table, output template, and analysis checklist could be split into separate reference files. The references section lists external documents but doesn't link to any bundle files for deeper guidance.