Conciseness

The body is dense and directive — numbered rules, a layout tree, and code with almost no padding or explanation of concepts Claude already knows (no "what is DynamoDB" prose). It falls short of 5 due to minor redundancy: the prohibition on standalone `prismarine generate-client` is stated in Rule 5 and repeated as a parenthetical note in step 3, and the 'Must be ABOVE @c.model' ordering appears in both Rule 4 and the code comment. It is above 3 because the excess is trimming-level, not unnecessary explanation.

Actionability

Mostly executable guidance: complete model definition code, a full resources.yaml block, exact `uv run easysam --environment dev generate .` commands, and copy-paste CRUD examples covering put, conditional put, get, and index query. It misses 5 because the required `DynamoAccess` module (Rule 6 and the layout show `common/dynamo_access.py` exporting `get_dynamo_access()`) is mandated but never exemplified, leaving a gap in the primary workflow. It is above 3 because nothing is pseudocode and the common cases are covered.

Workflow Clarity

The Data Access Workflow is a clearly sequenced 4-step process (define models → configure resources.yaml → generate/deploy → execute CRUD), with some checkpoints present: generate is noted to validate the schema, and the CRUD step shows error handling via `DbConditionFailed`/`DbNotFound`. It does not reach 5 because there is no explicit validate-then-fix-then-retry loop for the deploy step (relevant given database/deploy operations), and stays above 3 because validation and error handling are at least present rather than absent.

Progressive Disclosure

The body is a concise overview (~125 lines) with a clearly labeled Reference Material section pointing to four one-level-deep files (easysam.md, model-definition.md, crud-api.md, cli-usage.md), each annotated with its scope; all four exist in ./references/ and none nest further references. This matches the 5 anchor's clear overview with well-signaled, one-level-deep references and easy navigation; there is no inline content that belongs in a separate file.

Specificity

The description lists multiple concrete, third-person actions — "Build, define, and manage DynamoDB models and client code", creating clusters, defining decorators, configuring resources.yaml, handling modelling modes, and performing CRUD operations — giving comprehensive coverage of the skill's capabilities. It is not below 5 because no concrete capability area is missing, and not below 4 because it goes well beyond 'several specific actions with minor gaps'.

Completeness

It explicitly answers 'what' ("Build, define, and manage DynamoDB models and client code using Prismarine, the model-driven DynamoDB ORM") and 'when' with a concrete trigger clause: "Always use this skill when creating Prismarine clusters, defining @c.model or @c.index decorators, configuring resources.yaml prismarine settings...". Both are explicit with concrete trigger phrases, matching the 5 anchor exactly; 4 would require the 'when' to be less specific.

Trigger Term Quality

Trigger coverage is strong and natural for the domain — "Prismarine clusters", "@c.model or @c.index decorators", "resources.yaml", "TypedDict or Pydantic", "CRUD database operations via prismarine_client" — but a few natural terms a user might say are absent (e.g., "DynamoDB tables", "deploy", "easysam generate/deploy"). It sits above 3 (keywords are domain-natural, not generic) but short of 5's comprehensive synonym coverage.

Distinctiveness Conflict Risk

The description occupies a clear niche (a named ORM, Prismarine, for EasySAM/Python) and its triggers are qualified by Prismarine-specific artifacts (@c.model, prismarine_client, resources.yaml prismarine settings), so it is unlikely to fire for a generic DynamoDB or Python skill. It is not 4 because even the broadest trigger ("CRUD database operations") is explicitly scoped "via prismarine_client".