The body is mostly lean, but the Start Here block contains padded phrasing ("It is the recommended starting point for getting the official Convex guidelines in place and following the current Convex AI setup described in the docs") and restates the install preference, so it could be tightened per the level-2 anchor.

It provides an exact copy-paste command ("npx convex ai-files install"), concrete fallback and docs URLs, and a specific skill-to-scenario routing table, giving fully executable guidance.

For a simple routing skill, the sequence is unambiguous: install/refresh guidance first, then route to the most specific skill, with a "When Not to Use" guardrail, and no destructive operations requiring validation.

The skill is under 50 lines with no need for bundle references, and it is organized into clear sections (Start Here, Route to the Right Skill, When Not to Use), meeting the simple-skill threshold for the top anchor.

"Routes general Convex requests to the right project skill" names the domain and a concrete action, but lists only a single action (routing) rather than multiple specific capabilities, so it stops short of the level-3 anchor.

It explicitly states what it does ("Routes general Convex requests to the right project skill") and when to use it via an explicit "Use when..." clause, satisfying both halves required for the top anchor.

"which Convex skill to use" is a natural user phrase, but "underspecified Convex app task" is more jargon than conversational, and only one trigger scenario is covered, leaving common variations missing per the level-2 anchor.

The router niche is clear and the triggers (general or underspecified Convex requests, choosing a skill) are distinct from the specific task triggers of the skills it routes to, making false triggering unlikely.