Conciseness

The body is dense with genuinely non-obvious domain knowledge (tool routing, ordering chains, exact error strings), but the projectPath rule is stated three times (the Critical Directive, the "Which project the tools act on" note, and the install note), and several directives are heavily nested walls of parenthetical sub-clauses (e.g. the scaffold-chain and multi-project notes). Mostly efficient but noticeably tighten-able — anchor 3, not 4.

Actionability

Guidance is fully executable: exact tool names with the stable mps_mcp_ prefix, exact parameter keys (nodeReference, conceptRefs, parameters.code), executable script invocations with real arguments, literal error strings ("Unable to determine the target project…", LANGUAGE_NOT_BUILT), and named recovery calls. Specific examples cover the common cases.

Workflow Clarity

Multi-step processes are explicitly sequenced with validation checkpoints and recovery loops: the numbered structure-edit → clean MAKE → verify descriptors → scaffold chain, the 5-step session-init workflow, "Validate frequently" with mps_mcp_check_root_node_problems after every mutation, rebuild-after-compiled-aspect-change rules, and failure recovery from rejection messages and EXPLAIN_TYPE. Matches the anchor-5 feedback-loop pattern.

Progressive Disclosure

The overview uses well-signaled, one-level-deep references ("Open references/finding-things.md for…", "See references/analysis-tools/type-queries.md") plus a companion-skills index table — good structure. However, none of the referenced files exist in the bundle (no references/, scripts/, or assets/ directories), so navigation is broken as presented, keeping this below anchor 5.

Specificity

Enumerates concrete, specific artifacts — "node JSON blueprints", "type queries", "generators", "validation", "MPS MCP tool usage" — but presents them as topic nouns rather than actions, and "Complete" is a mild over-claim. It lists several specific items with minor gaps (anchor 4) rather than the action-verb comprehensiveness of anchor 5.

Completeness

Clearly answers "what" (workflow guide covering models, languages, generators, blueprints, type queries, validation, MCP tool usage, companion-skill index) and "when" with an explicit clause: "Use whenever working in an MPS project, when AGENTS.md says to load the MPS workflow skill, or when you need to pick the right MPS aspect-specific skill" — three concrete trigger phrases matching the anchor-5 example.

Trigger Term Quality

Includes natural terms users would say in this niche — "MPS project", "JetBrains MPS", "DSL projects", "AGENTS.md" — giving good keyword coverage. Not 5: few synonyms or phrasing variations beyond the core "MPS" term; not 3: the coverage goes well beyond a single generic keyword.

Distinctiveness Conflict Risk

The JetBrains MPS niche is distinct with niche-specific triggers, but "Use whenever working in an MPS project" also matches the mps-* companion skills this skill indexes, creating minor overlap risk with closely related skills. Anchor 4 ("mostly distinct; minor overlap risk") is the closest fit; not 5 because the router-vs-companion boundary is not fully disambiguated.