Conciseness

The body is dense routing signal with zero concept explanations, but the same routing facts are repeated across three parallel sections — e.g. `skills/grdb-performance.md` appears in the Quick Reference table, Decision Tree step 3a, and Example Invocations, while `skills/database-migration.md` appears five-plus times, and the ~70-line Example Invocations section largely duplicates the table. Mostly efficient, but a whole section of duplicated routing could be consolidated, fitting anchor 3 rather than 4.

Actionability

Every entry gives a fully executable instruction: exact files to read ("Read: `skills/swiftdata.md`"), agents to launch, or copy-ready commands ("`/axiom:audit core-data`"). The Example Invocations map ~25 concrete user requests to exact actions, and per the scoring notes the absence of code in an instruction-only router skill is not penalized when guidance is this actionable.

Workflow Clarity

The numbered Decision Tree (with 3a/4a/23a sub-branches) gives a clear, unambiguous routing sequence, and the one destructive-capable path is gated by an explicit checkpoint ("ALWAYS read `skills/database-migration.md` when adding/modifying database columns") with the failure modes it prevents, plus audit agents serving as validation. Below anchor 5 because there is no inline error-recovery feedback loop and the routing sequence is duplicated across three sections rather than stated once.

Progressive Disclosure

The SKILL.md is a clean index: a symptom-to-file table with clearly signaled one-level-deep references and all detail delegated to separate files. It misses anchor 5 because the referenced `skills/*.md` files are not part of this bundle (no references/ directory; paths resolve against an external suite layout), and cross-suite indirection like "See axiom-security (skills/keychain.md)" adds navigation layers outside the skill itself.

Specificity

The description comprehensively enumerates concrete technologies ("SwiftData, Core Data, GRDB, SQLite, Realm, CloudKit sync, file storage, Codable, migrations") but states no explicit actions — only generic verbs like "working with" and "Covers". It sits between anchor 2 (minimal/generic actions) and anchor 3 (1-2 concrete actions): domain naming far exceeds minimal, yet no capability verb is present, so it cannot reach 4.

Completeness

Both parts are present: "Use when working with ANY data persistence, database, storage, CloudKit, migration, or serialization in an Apple app" is an explicit and specific trigger, and "Covers SwiftData, Core Data, GRDB..." states scope. It falls short of anchor 5 because the "what" is a coverage list of nouns rather than concrete stated actions or capabilities.

Trigger Term Quality

Natural user phrasings are comprehensively covered: "data persistence", "database", "storage", "CloudKit", "migration", "serialization" plus nine specific technology names (SwiftData, Core Data, GRDB, SQLite, Realm, Codable). Within the skill's declared scope no meaningful synonyms are missing, matching the comprehensive anchor rather than the "a few natural terms missing" anchor.

Distinctiveness Conflict Risk

"in an Apple app" plus the data-persistence technology list carves a clear router niche with distinct triggers. Minor overlap risk remains: the broad "ANY ... storage, or serialization" umbrella can catch Keychain/CryptoKit/iCloud questions that the body itself routes to sibling skills (axiom-security, axiom-swift), keeping it below the minimal-conflict anchor 5.