Conciseness

The body is ~3,050 lines (~53k tokens) — roughly six times a reasonable SKILL.md budget — with heavy padding: the AllowContactMappingWithEmail security warning is repeated verbatim in four settings tables, the 2FA non-support rationale appears four times, and logout-settings guidance is restated per provider. It sits at anchor 2 ('noticeably verbose; several unnecessary explanations or padded sections') rather than 1 only because the excess is Power Pages-specific arcana, not explanations of concepts Claude already knows.

Actionability

Guidance is fully executable throughout: copy-paste `create-site-setting.js` command blocks with every flag, exact file paths and function signatures (`getMyProfile(contactId): Promise<ProfileContact>`), complete YAML/HTML/TypeScript artifacts (the Code-Site-Shell-Header template, the acceptTerms implementation), input-validation regexes with re-prompt instructions, and exact route/field naming mandates. This matches the level-5 anchor ('copy-paste ready code or commands; specific examples cover the common cases').

Workflow Clarity

Eight phases are explicitly sequenced with a workflow overview, per-phase goals and outputs, HTML-commented gates with triggers/cancel semantics, prerequisite checks (1.1–1.5), input validation with re-prompts, and a dedicated verification phase (7.1 file inventory, 7.2 build, 7.3 Playwright browser check, 7.4 site-integrity gate with 'fix every blocking error before proceeding'). This matches the level-5 anchor: clear sequence with explicit validation steps and feedback loops for error recovery.

Progressive Disclosure

The bundle is real and one level deep (references/authentication-reference.md at 172KB, authorization-reference.md, idp-provisioning-reference.md, scripts/validate-auth.js), and pointers are clearly signaled ('See authentication-reference.md for the full implementation'). But the SKILL.md body itself inlines reference-grade bulk that belongs in those files — the four per-provider optional-settings tables, the multi-page Entra External ID walkthrough, and the full site-setting command catalog — matching anchor 3 ('content that should be separate is inline') rather than anchor 2, since structure and reference signaling are present.

Specificity

The description lists multiple concrete actions: 'set up authentication (login/logout) and role-based authorization', 'sets up the IdP app registration for OIDC providers', 'reads the provider's docs first', 'guides the user through the provider's console', and 'wires the client ID, authority, and claims mapping into Power Pages'. Coverage of the skill's actions is comprehensive, matching the level-5 anchor rather than the 'several specific actions; minor gaps' of level 4.

Completeness

It explicitly answers both questions: an explicit 'Use when the user asks to...' clause with concrete trigger phrases, and a clear 'what' (configures login/logout and role-based authorization for a Power Pages SPA site, sets up the IdP app registration, wires client ID/authority/claims). This matches the level-5 anchor exactly; level 4 would require the 'when' to be less explicit.

Trigger Term Quality

It enumerates ~19 natural trigger phrases users would actually say ('set up authentication', 'add login', 'add logout', 'add sign in', 'enable auth', 'protect routes', 'set up local login', 'add Facebook login', 'add Google sign in') plus provider-name variants (Entra ID, Entra External ID, OIDC, SAML, WS-Federation). This is comprehensive synonym coverage matching the level-5 anchor (cf. 'PDF files, PDFs, forms, document extraction, .pdf').

Distinctiveness Conflict Risk

The niche is clearly delimited ('Power Pages SPA site using any supported identity provider') with provider-specific triggers (Entra External ID, Okta, Auth0, SAML, WS-Federation) that are unlikely to fire for unrelated skills. Minimal conflict risk, matching the level-5 anchor; level 4 would imply overlap with closely related skills, which the Power Pages scoping avoids.