Conciseness

The body is code-heavy and largely avoids explaining concepts Claude already knows, but the same SQLite open/query/close pattern ("const db = new Database('data.sqlite')" ... "db.close()") is repeated near-verbatim across Server Components, API Routes, and Server Actions, and the package.json scripts appear twice (with and without --bun). Mostly efficient but could be tightened. Not a 3 due to this repetition; not a 1 because it is not padded with conceptual exposition.

Actionability

Concrete, copy-paste-ready examples span package.json, next.config.js, server components, API routes, server actions, middleware, a Dockerfile, and env usage (e.g., "bunx create-next-app@latest my-app", "bun --bun next dev", "const db = new Database('data.sqlite')"). Not a 2 because the code is executable and specific rather than pseudocode; the only caveat is that referenced reference files do not exist, but the inline guidance itself is fully actionable.

Workflow Clarity

The Quick Start and Deployment sections give a clear sequence (create, install, dev, build, start), and a Common Errors table aids recovery, but destructive operations such as "DELETE FROM users WHERE id = ?" in deleteUser and the Docker build have no explicit validation or verification checkpoints. Per the rubric, missing validation in destructive/batch operations caps this at 2. Not a 3 because no validate-then-proceed feedback loops are shown; not a 1 because sequences are present and legible.

Progressive Disclosure

Sections are well-organized and the "When to Load References" block clearly signals one-level-deep pointers ("Load references/app-router.md when ..."), but the referenced files do not exist — the references/ directory is absent, so both app-router.md and caching.md are broken links — and the ~310-line body keeps material inline (full route/action/Docker examples) that could be split out. Not a 3 because the references are non-functional and content is not appropriately split; not a 1 because organization is decent and references are one level deep rather than nested 2+ levels.

Specificity

Quotes like "building Next.js applications using Bun as the runtime", "running Next.js on Bun", and "create-next-app with Bun" name the domain and several actions, but the description is mostly a list of trigger phrases rather than a comprehensive enumeration of concrete capabilities (e.g., configuring next.config, using Bun SQLite APIs, deploying). Not a 3 because it lacks multiple distinct concrete actions; not a 1 because it does name specific actions beyond a vague domain.

Completeness

The "when" is explicit ("This skill should be used when the user asks about ... or building Next.js applications using Bun as the runtime"), but the "what" is only implied through those trigger phrases rather than stated as a concrete capability list, unlike the anchor-3 example which leads with "Extract text and tables from PDF files, fill forms, merge documents" before the "Use when" clause. Not a 3 because the what is not clearly and separately stated; not a 1 because the explicit when guidance and an implied what are both present.

Trigger Term Quality

Phrases such as "Next.js with Bun", "Bun and Next", "running Next.js on Bun", "Next.js development with Bun", and "create-next-app with Bun" give good coverage of the natural wordings a user would actually say. Not a 2 because the variations are broad and natural, not just a single keyword; not below 3 because no common variation is clearly missing.

Distinctiveness Conflict Risk

The intersection of "Next.js" and "Bun as the runtime" (e.g., "building Next.js applications using Bun as the runtime") is a clear niche with distinct triggers unlikely to fire for unrelated skills. Not a 2 because the Bun-runtime qualifier makes it specific rather than merely overlapping with a generic Next.js skill; not below 3 because the triggers are tightly scoped to this combination.