Conciseness

The body is noticeably verbose: a ~110-line fully worked example article, a 20-skill library navigation block, a 10-item Related Skills list, and structure templates stated three times (steps 6 and 8, plus references/content-structure-templates.md), alongside checklists of generic SEO knowledge ("Keep it under 50 characters", "Write compelling subject lines") Claude already has. It is not 1 because nothing explains what a blog or SEO is, and the templates do carry operational value; it sits below 3 because multiple sections are padding or duplication.

Actionability

The 12-step workflow gives concrete, executable guidance with exact thresholds — "Under 60 characters for full SERP display", "150-160 characters", "Direct, concise answer in 40-60 words", "Paragraphs of 3-5 sentences", "2-5" internal links — plus fill-in templates and a complete worked example covering a common case ("Write an SEO-optimized article about 'email marketing best practices'..."). For an instruction-only skill this is copy-paste-ready guidance, matching anchor 5.

Workflow Clarity

The process is a clearly numbered 1-12 sequence with explicit validation checkpoints: "Validation Checkpoints" split into Input Validation and Output Validation, a step-11 "Content SEO Score" review table, and a step-12 "CORE-EEAT Post-Write Check" self-check with "Items Needing Attention: [list any ⚠️/❌ items]" forming a fix-and-recheck loop. This matches the anchor-5 pattern of sequence plus explicit validation plus checklists.

Progressive Disclosure

Two real, one-level-deep, clearly signaled reference files exist ([Title Formulas](./references/title-formulas.md), [Content Structure Templates](./references/content-structure-templates.md)) and the large CORE-EEAT benchmark is correctly offloaded to a reference path. However the ~630-line body inlines substantial content that belongs in those files — the full worked example article, the 16-row CORE-EEAT constraint tables, and inline content-structure templates duplicating references/content-structure-templates.md — matching anchor 3 (content that should be separate is inline) more than anchor 4.

Specificity

"Creates high-quality, SEO-optimized content that ranks in search engines. Applies on-page SEO best practices, keyword optimization, and content structure" lists several distinct actions in third person, matching anchor 4. It is not 5 because the actions are domain-level rather than the fully concrete operational list of anchor 5, and phrases like "high-quality" and "maximum visibility and engagement" are buzzword padding; it exceeds 3 because it names more than 1-2 concrete actions.

Completeness

Explicitly answers both: "Use when the user asks to..." provides concrete trigger phrases for when, and "Creates high-quality, SEO-optimized content... Applies on-page SEO best practices, keyword optimization, and content structure" answers what. It also adds routing guidance ("For AI citation optimization, see geo-content-optimizer"), matching the anchor-5 example structure; no gaps place it at 4.

Trigger Term Quality

Nine quoted natural phrases ("write SEO content", "create a blog post", "write an article", "content writing", "draft optimized content", "write me an article", "create a blog post about", "help me write SEO content", "draft content for") give strong coverage of how users actually phrase this need. Not 5: a few natural variants are missing from the description (e.g. "blog writing", "write a blog post", "copywriting" — some appear only in metadata triggers).

Distinctiveness Conflict Risk

The SEO content-writing niche is clear and adjacent skills are explicitly disambiguated ("For AI citation optimization, see geo-content-optimizer. For updating existing content, see content-refresher"), but broad triggers like "write an article" and "content writing" carry minor overlap risk with general writing requests and sibling skills. This is anchor 4 (mostly distinct, minor overlap risk) rather than 5 (minimal conflict risk).