Conciseness

The body is dense with project-specific, non-obvious knowledge (divergent-head rebasing, the stale data-import Docker image, sqlalchemy-continuum version tables) and mostly skips concepts Claude already knows. It is not a 5 because several prose passages could be trimmed — e.g. "because that's where alembic.ini lives and where models is importable" and the ~120-word stale-image explanation in rebase Step 5 — but not a 3 because there is no real padding.

Actionability

Every subcommand ships copy-paste-ready bash: "alembic revision --autogenerate -m \"your migration message\"", "git show origin/main:backend/alembic/versions/<new-file>.py > ...", "docker compose --profile setup up db data-import --build -d", plus concrete autogenerate-review checklists. Placeholders like <new-file>.py are inherently variable filenames, not pseudocode, so the guidance is fully executable.

Workflow Clarity

Multi-step flows are numbered with explicit validation checkpoints and feedback loops: create's "Review the generated migration (critical!)" checklist and upgrade → verify → downgrade → re-apply round-trip, and rebase's "Confirm with alembic heads — it should report exactly one head" plus a real downgrade/upgrade round-trip with "\d <table>" schema checks. The destructive/batch database operations all carry verification, so the workflow-clarity cap at 3 does not apply.

Progressive Disclosure

As a single-file skill it is well structured — an argument-dispatch section per subcommand, a Key File Locations index, and a Common Pitfalls section make navigation easy. It is not a 5 because the ~60-line rebase procedure and the deep pitfall detail would sit more naturally in references/ files, and no bundle files exist to split the 240-line body.

Specificity

The description lists five concrete actions — "Create, review, test, rebase, and rollback Alembic database migrations for OPRE OPS" — comprehensively covering the skill's capability set, which mirrors the body's full command set. It is not a 4 because there are no coverage gaps: every verb corresponds to a real subcommand.

Completeness

It explicitly answers both "what" (sentence 1: create/review/test/rebase/rollback) and "when" ("Use this skill whenever the user mentions...") with concrete trigger phrases, and adds a second "when" clause ("Also use when a model change has been made..."). Matches the 5 anchor exactly.

Trigger Term Quality

Natural triggers include "database migrations, alembic, schema changes, adding/modifying columns or tables, model changes that need migration, 'migrate the database', or a migration chain conflict / divergent heads" — covering the tool name, plain-language phrasings a user would actually say, and workflow synonyms. Not a 4 because no common variation of the trigger vocabulary is missing for this domain.

Distinctiveness Conflict Risk

"Alembic database migrations for OPRE OPS" carves out a clear niche with distinct triggers like "migration chain conflict / divergent heads after main has moved forward"; minimal conflict risk with other skills. Not a 4 because the triggers are tied to a specific tool and project rather than a broad domain.