Conciseness

Every line instructs ('Run only the smallest scoped checks', 'Never run `make bazel_lint_changed` unless the user explicitly requests it') and no concepts Claude already knows are explained. Lean and efficient; each token earns its place.

Actionability

Concrete commands are given (`go test -run <TestName> -tags=intest,deadlock`, `make lint`, `make bazel_lint_changed`), but the central Ready-profile step ('Map changed paths and change types to `AGENTS.md` -> `Task -> Validation Matrix`) delegates the actual check selection to an external doc rather than stating it. Mostly executable guidance with minor gaps; not fully copy-paste ready.

Workflow Clarity

The Ready profile gives a clear 4-step numbered sequence with reuse/rerun checkpoints ('Rerun affected checks when relevant changes or new failures invalidate the results'). It lacks an explicit failure-handling loop (what to do when a required check fails), keeping it at anchor 4 rather than 5, but the sequence and checkpoints are explicit, so it exceeds anchor 3.

Progressive Disclosure

The skill is under 50 lines with well-organized sections (Overview, three Profiles) and clearly signaled, one-level-deep references into `AGENTS.md`. No bundle files exist, so per the simple-skill guideline this organization merits the top score.

Specificity

Names the domain ('TiDB changes') and 1-2 concrete actions ('Choose validation', 'using the checks required for each change type'), but does not list several specific actions. It is more concrete than anchor 2 because the actions go beyond naming the domain, but not comprehensive enough for anchor 4.

Completeness

Both 'what' (choose validation and required checks for TiDB changes) and 'when' ('during iteration and delivery') are explicitly stated, so it exceeds anchor 3 where 'when' is only weakly implied. The 'when' could be more specific with user-sayable triggers, so it falls short of anchor 5.

Trigger Term Quality

Relevant keywords are present ('TiDB', 'validation', 'checks', 'change type'), but common natural variations users would say are missing ('verify', 'test', 'CI', 'before opening a PR'). Matches anchor 3; anchor 4 requires fuller synonym coverage.

Distinctiveness Conflict Risk

'TiDB' pins a clear niche with minimal overlap risk against other skills. It is distinct rather than merely 'mostly distinct' (anchor 4), because the domain qualifier makes false triggers unlikely.