Conciseness

The body is lean and every token earns its place: each section carries repo-specific facts (offset-only behavior, exact commands, baseline locations) that Claude cannot already know, with zero padding or generic explanations. This matches the anchor 'lean and efficient; assumes Claude's competence'.

Actionability

Guidance is fully executable and copy-paste ready: "TEST_UPDATE_BSL=1 pwsh tests/ILVerify/ilverify.ps1", the "/run ilverify" PR comment alternative, the exact baseline path "tests/ILVerify/*.bsl", and a verification step. These cover the common cases, including the offset-only no-op case.

Workflow Clarity

This is a simple single-purpose skill whose single action (update baselines) is unambiguous, satisfying the simple-skill exception. It also includes an explicit validation checkpoint ("Re-run without TEST_UPDATE_BSL=1, should pass"), so the missing-validation cap does not apply.

Progressive Disclosure

The body is under 50 lines with well-organized sections (When to Use, Offset-Only Differences, Update Baselines, Baselines Location, Verify) and no need for external references — no references/, scripts/, or assets/ bundle directories exist. This matches the simple-skill exception for a top score.

Specificity

The description names the domain ("ILVerify baseline failures") and one concrete action ("Fix"), plus triggering causes in parentheses ("codegen, new types, method signatures"), but does not list several distinct actions like updating or refreshing baselines. This matches the anchor 'names domain and 1-2 concrete actions, but not comprehensive' rather than the level above.

Completeness

It explicitly answers both what ("Fix ILVerify baseline failures when IL shape changes") and when ("Use when CI fails on ILVerify job") with concrete trigger phrases, mirroring the anchor-5 example pattern. Not anchor 4, because neither part is vague or merely implied.

Trigger Term Quality

Terms like "ILVerify", "ILVerify job", "CI fails", "codegen", and "method signatures" give good coverage of the natural phrases a user or CI log would produce for this niche. It falls short of anchor 5 only because common variations such as "baseline update" or the ".bsl" file extension are missing.

Distinctiveness Conflict Risk

"ILVerify" is a highly specific .NET tooling niche with distinct triggers, making conflict with other skills virtually impossible. This matches the anchor 'clear niche with distinct triggers; minimal conflict risk'.