Conciseness

The body is lean, imperative, and assumes competence — no conceptual filler, each of the 7 sections delivers dense operational guidance ('There is no project in that path. Inspect itself needs projectsAcl:LIST and groupsAcl:LIST'). Repeated 'do not wait' phrasing reads as deliberate emphasis of one critical rule, not padding.

Actionability

Mostly executable: concrete CLI command ('npx @cognite/cli@latest apps setup-https') and two copy-paste-ready HTTP requests with exact paths and query params, plus specific field-level instructions ('find appHostingAcl (camelCase)', 'Filter projectScope... Actions are READ | WRITE | RUN'). Minor gaps remain — the <session> bearer token source and the localhost serve command are left to the Fusion prompt without a pointer to where they come from.

Workflow Clarity

Seven clearly sequenced numbered sections with explicit parallelism rules ('Missing appHostingAcl WRITE is a parallel track, not a gate', 'Do not wait for access before scaffolding') and explicit error-recovery checkpoints ('If the response is 403, treat access as unknown and keep going', 'If browser login stalls, loops, or never persists a session, stop and ask the builder').

Progressive Disclosure

The body is a well-organized overview with clearly signaled one-level-deep references to sibling skills for detail ([setup-flows-auth], [connect-atlas-mcp], [dm-graph-traversal], [flows-app-brief], [flows-external-app-submit]) and external doc links; no bundle files exist to inline, and nothing that belongs in a separate file is inlined.

Specificity

The description enumerates concrete, specific actions covering the whole workflow: 'local HTTPS (apps setup-https)', 'GET token/inspect and appHostingAcl WRITE', 'the models/datamodels fallback', 'SME story, App-Brief', 'deploy, sign as builder, and submit' — comprehensive coverage with no vague padding.

Completeness

Both what and when are explicitly answered: 'MUST be used when starting a new Flows custom app' plus the concrete trigger list ('Use whenever the user mentions token/inspect, appHostingAcl, mkcert, apps setup-https, SME story, or a clickable https://localhost prototype'), alongside a clear statement of what the skill owns.

Trigger Term Quality

Good keyword coverage in the explicit trigger clause ('Use whenever the user mentions token/inspect, appHostingAcl, mkcert, apps setup-https, SME story, or a clickable https://localhost prototype'), but it lacks natural synonyms/variations users might say (e.g., 'deploy', 'submit', 'CDF app', 'hosted app') as triggers.

Distinctiveness Conflict Risk

It carves out a clear niche (Flows custom app bootstrap, 'Owns what the short Fusion prompt leaves out') and explicitly hands off overlapping concerns ('Hands Industrial MCP connection to connect-atlas-mcp'), minimizing conflict risk with sibling skills.