Conciseness

Lean and token-efficient: the body never explains concepts Claude already knows (no 'Kerberos is ...' preamble) and every line is an actionable directive, matching the 'lean, assumes Claude's competence, every token earns its place' anchor; it avoids the level-2 case of unnecessary explanation.

Actionability

Instruction-only yet highly actionable — it names exact artifact sources ('SAM, SECURITY, SYSTEM, NTDS, DPAPI, LSA secrets, browser stores, PowerShell history, ETW, Sysmon') and exact fields to record ('SPN, delegation, PAC or group data, encryption type, and the accepting service'), so the scoring-note exemption for actionable instruction-only skills applies and it is not the pseudocode/level-2 case.

Workflow Clarity

A clearly sequenced 3-phase workflow (Recover material -> Trace pivot chain -> Report edge) plus a 5-step Quick Start checklist, with an explicit verification checkpoint ('Reproduce the smallest pivot that still proves the privilege edge'); because the task is not destructive/batch the cap-at-2 rule does not apply, and the checklist-plus-proof structure meets the level-3 anchor.

Progressive Disclosure

The body is a concise overview that signals one clearly-named, one-level-deep reference ('Load `references/windows-pivot.md` for the pivot checklist, Kerberos evidence block, and common replay mistakes') — a file that exists in the bundle — and routes four sub-tasks to sibling skills, matching the 'clear overview with well-signaled one-level-deep references' anchor rather than the inline-or-nested level-2 case.

Specificity

Names many concrete capabilities in a single dense clause — 'Kerberos, WinRM, SMB, RDP, Windows credential material, replayable tickets, delegation edges, and host-to-host pivot chains' — matching the 'lists multiple specific concrete actions' anchor rather than the vague 'names domain and some actions' level 2.

Completeness

Explicitly answers both halves: 'what' ('CTF-sandbox workflow for ... host-to-host pivot chains') and 'when' ('Use when the user asks to replay ... or prove which Windows service accepted a credential or ticket'), with an explicit 'Use when' clause as the level-3 anchor requires; it is not the level-2 case of 'what present, when only implied'.

Trigger Term Quality

Natural phrasing a CTF user would actually say appears verbatim — 'replay Kerberos material', 'trace a WinRM, SMB, or RDP pivot', 'host-to-host privilege movement', 'which Windows service accepted a credential or ticket' — giving good coverage of real trigger terms rather than the jargon-only or partial-coverage lower anchors.

Distinctiveness Conflict Risk

Clear niche (Windows host-to-host pivot within CTF sandbox) with distinct triggers and a guard — 'Use only after `$ctf-sandbox-orchestrator` has already established sandbox assumptions and routed here' — that prevents it firing for the wrong skill, matching the 'clear niche, unlikely to conflict' anchor rather than the overlapping level 2.