Lean and information-dense — it assumes Claude's general programming competence and only explains MPS-specific tooling Claude would not know; it is not level 2 because there is no padding with concepts Claude already knows, though the 4KB/file-path note appears in more than one place for cross-tool clarity.

Provides a concrete operation×kind parameter table with exact required parameters and notes (e.g. 'childJson (parent), childRole, childJson', position clamping, NOT_FOUND behavior), giving copy-paste-ready tool guidance rather than abstract direction.

The 'Common Workflow' is a numbered 6-step sequence with explicit validation checkpoints (dryRun → inspect warnings → check_root_node_problems → apply quickFixes → FIX_REFERENCES) and feedback loops, matching the top anchor including for destructive/batch edits.

Clear overview body with a 'Reference Index' pointing one level deep to three real, verified files (json-format.md, staged-construction.md, troubleshooting.md), each signaled with when-to-open guidance and appropriately split detail; easy navigation.

Lists multiple concrete actions — 'Add, update, or delete MPS nodes using JSON blueprints' — and enumerates covered concerns (blueprint format, staged construction, validation, reference repair), matching the 'lists multiple specific concrete actions' anchor.

Explicitly answers both what ('Add, update, or delete MPS nodes...') and when ('Use whenever creating, editing, or restructuring nodes in any MPS model'), with an explicit 'Use whenever' trigger clause, matching the top anchor.

The trigger 'Use whenever creating, editing, or restructuring nodes in any MPS model' uses the natural terms a user would say when needing this skill, with good coverage of verb variations; it is not the level below because it goes beyond a single keyword to several natural phrasings.

Scoped to 'MPS nodes' and 'MPS model' with distinct MPS-specific triggers, giving it a clear niche unlikely to fire for non-MPS skills; it is not level 2 because the domain is sharply bounded rather than merely 'somewhat specific'.