The body is lean and assumes Claude's competence — it never explains what Obsidian, a vault, or a plugin is, and jumps straight to syntax, targeting, and executable patterns, matching 'every token earns its place'; it avoids the unnecessary-concept-explanation failure of level 2.

It is packed with copy-paste-ready executable commands (e.g. 'obsidian create name="My Note" content="Hello world"', 'obsidian search query="search term" limit=10') with concrete parameter syntax, satisfying 'fully executable code/commands'; it is not vague or pseudocode (2).

The 'Develop/test cycle' is a clearly numbered sequence (Reload -> Check for errors -> Verify visually -> Check console) with an explicit validation checkpoint and feedback loop ('if errors appear, fix and repeat from step 1'), matching the 'clear sequence with explicit validation steps; feedback loops for error recovery' anchor; it is not a flat list lacking checkpoints (2).

No bundle files exist, so this scores the body structure: it is well-organized into clear sections and appropriately defers the full command catalogue to the live 'obsidian help' (noted as always up to date) and the docs URL rather than inlining everything, matching well-signaled navigation; it is not a monolithic wall of text or poorly-signaled reference (2).

Lists many concrete actions — 'read, create, search, and manage notes, tasks, properties' and 'reload plugins, run JavaScript, capture errors, take screenshots, and inspect the DOM' — matching the 'lists multiple specific concrete actions' anchor; it is not merely naming a domain with a few actions (2).

It explicitly states both what the skill does (vault CRUD + plugin/theme dev commands) and when to use it via a clear 'Use when the user asks to interact with their Obsidian vault...' trigger, satisfying the both-what-and-when anchor; it is not missing the when clause (2).

The 'Use when' clause surfaces natural phrasings users would actually say — 'interact with their Obsidian vault', 'manage notes', 'search vault content', 'develop and debug Obsidian plugins and themes' — giving good coverage rather than only some relevant keywords (2).

The Obsidian-vault and plugin/theme-development niche is highly specific with distinct triggers, making it unlikely to fire for unrelated skills; it is not generic enough to overlap with similar skills (2).