Conciseness

Nearly every token is load-bearing: executable Go for each CRUD operation, schema, finder, waiter, and acceptance test, plus an attribute-type table and a checklist — no padding explaining what Terraform or CRUD is. Minor trimmable material exists (the muxing/go.mod detection paragraph and the note about legacy website/docs trees in older providers), keeping it just below the lean level-5 anchor.

Actionability

The guidance is copy-paste ready: complete, compilable Framework code for Configure, Schema, Create/Read/Update/Delete, ImportState, finders with typed not-found errors, a StateChangeConf waiter, and a full TestAccWidget_basic test with config helper. Specific tooling commands (tfplugindocs, go generate ./...) and concrete naming grammar cover the common cases exactly as the level-5 anchor requires.

Workflow Clarity

The body follows a coherent implementation order — check design principles "before implementing", file structure, resource skeleton, CRUD, testing, docs — and closes with an explicit Pre-Submission Checklist that serves as a validation checkpoint, plus error-recovery guidance (not-found → remove from state, already-deleted → success). The sequence is conveyed by section ordering rather than explicit step numbering, and there is no validate-then-proceed loop mid-workflow, so it matches level 4 rather than the fully explicit level-5 anchor.

Progressive Disclosure

The skill is a clear overview with well-signaled, one-level-deep references: an up-front "References (load when needed)" block naming references/design-principles.md and references/retries-and-waiters.md, both of which exist in the bundle, reinforced by inline pointers at the point of need ("full treatment in references/design-principles.md", "read it whenever the API is asynchronous or eventually consistent"). Deep material is correctly split out of SKILL.md, matching the level-5 anchor.

Specificity

The description lists eight concrete, specific actions — "CRUD operations, schema design, plan modifiers and validators, not-found handling, waiters for eventually consistent APIs, import support, resource design principles, and required acceptance test coverage" — which comprehensively covers the domain with no vague filler. It matches the level-5 anchor (multiple specific concrete actions, comprehensive) and exceeds level 4, which allows coverage gaps.

Completeness

Both halves are explicit: the what-clause enumerates concrete capabilities, and an explicit "Use when adding or changing a resource or data source, deciding whether an API concept should be a resource, wiring a resource to the provider's configured client, handling drift or resource-not-found, or reviewing a resource implementation before submission" gives multiple concrete trigger phrases. This is a direct match for the level-5 anchor; level 4 would require the when-clause to be less explicit or specific.

Trigger Term Quality

Triggers include natural phrases users would say — "adding or changing a resource or data source", "handling drift or resource-not-found", "reviewing a resource implementation" — with synonym variation. A few natural entry points are missing from the when-clause (e.g., implementing import, writing acceptance tests, or schema/plan-modifier work without an existing resource), so it sits at level 4 rather than comprehensive level-5 coverage.

Distinctiveness Conflict Risk

The niche is clear — implementing resources/data sources in a Terraform provider on the Plugin Framework — and distinct from adjacent concerns (provider configuration, migration). Minor overlap risk remains with closely related skills the body itself references (provider-test-patterns for acceptance-test coverage, provider-framework-migration for SDKv2 changes), placing it at level 4 rather than the minimal-conflict level 5.