Conciseness

Quotes: "Be concise — instructions share the context window; only include what the agent wouldn't already know" — the body practices what it preaches, with no explanations of concepts Claude already knows and tight sections throughout. Not a 5 because there is minor redundancy: the verification checklist and the 'Missing applyTo' pitfall row restate rules already given in Steps 3–4, so a few tokens could be trimmed; well above the 3 anchor ('some unnecessary explanation').

Actionability

Quotes: ".github/instructions/<topic>.instructions.md", a complete YAML frontmatter template with per-field comments, "applyTo" glob examples ("**/*.cs", "test/**"), concrete filename examples, a recommended-sections template, and a precise eval id derivation rule ("path relative to .github/instructions/ with its suffix removed and nested path separators replaced by --"). This is copy-paste-ready guidance covering the common cases for an instruction-authoring skill (per the rubric's code_vs_instruction note, absence of code is not penalized when guidance is this concrete). The one delegation ("Follow the authoring and validation rules in eng/harness-evaluation/README.md") points to a real repo file with a specific path, which is appropriate rather than a gap.

Workflow Clarity

Quotes: five clearly sequenced steps ("Investigate the topic" → "Choose the file location" → "Generate the file" → "Write the body content" → "Author and validate the harness evaluation"), each with concrete sub-guidance, plus an explicit 8-item verification checklist and "produce and lint the requested instruction and eval before running behavioral comparisons". It falls short of the 5 anchor only because there is no explicit error-recovery feedback loop (e.g., 'if validation fails, fix and re-validate') for the harness-eval step; it clearly exceeds the 3 anchor since checkpoints are explicit, not implicit.

Progressive Disclosure

The body is well-organized into scannable sections (When Not to Use, Workflow, Common Pitfalls) with no bundle files needed — no content that clearly belongs in separate files is inlined, and the only external pointer ("eng/harness-evaluation/README.md") is clearly signaled, one level deep, and points to a repo file rather than creating nested skill references. This matches the 5 anchor's 'easy navigation' with appropriately placed content.

Specificity

Quotes: "Create and evaluate VS Code file-based instructions (.instructions.md files)" and "Generates scoped instructions and a paired Vally harness eval" — several specific actions (create, evaluate, generate scoped instructions, generate paired eval) with a concrete file extension. It is not a 5 because coverage of the evaluate side relies on the single term 'evaluate' without spelling out what evaluation entails, and it sits clearly above the 3 anchor ('1-2 concrete actions') given four distinct concrete actions.

Completeness

Quotes: "what" is answered concretely ("Create and evaluate VS Code file-based instructions (.instructions.md files)... Generates scoped instructions and a paired Vally harness eval") and "when" is explicit ("Use when asked to create, scaffold, or add file-based instructions for Copilot"). This matches the 5 anchor: both what and when are clearly and explicitly stated with concrete trigger phrases, exceeding the 4 anchor where 'when' could be more specific.

Trigger Term Quality

Quotes: "Use when asked to create, scaffold, or add file-based instructions for Copilot" — natural verbs users would say (create, scaffold, add) plus the concrete ".instructions.md" extension. Not a 5 because common variations like "Copilot instructions", "scoped instructions", or "instructions file" are missing; well above a 3 ('some relevant keywords but missing variations') since multiple natural trigger phrasings are present.

Distinctiveness Conflict Risk

Quotes: "VS Code file-based instructions (.instructions.md files)" and "for Copilot" — a clear niche with distinct file-extension triggers. Minor overlap risk remains with adjacent skills such as copilot-instructions.md generation or Agent Skills authoring (the body even has to disambiguate these in 'When Not to Use'), which keeps it below the 5 anchor's 'minimal conflict risk' but above the 3 anchor's generic overlap.