Conciseness

The ~55-line body contains zero concept explanations and no padding: every section (Inputs, Tool Restrictions, Setup, cache check, Workflow) carries operational information only. It assumes Claude's competence throughout, e.g. the one-line cache_dir derivation and the terse step descriptions — every token earns its place.

Actionability

Both bash blocks are copy-paste ready, inputs are enumerated as concrete key=value pairs, the exact output string ("Repository context is at: <cache_dir>/repo.md") is given, and every edge case is handled explicitly: cache hit short-circuit, no projects detected, per-project summarization failure, and one-retry on malformed output. Guidance is fully executable with no gaps.

Workflow Clarity

Five clearly sequenced steps with a cache-first short-circuit, explicit data flow between steps (detection output feeding summarizer inputs), and a genuine feedback loop: step 4 reads repo.md back, verifies expected sections from the template, and retries the write once before reporting an error. Sequence, checkpoints, and error recovery are all explicit.

Progressive Disclosure

The body is a clean overview with well-signaled, one-level-deep references to detector.md, summarizer.md, and template-repo.md, each tied to a specific workflow step. However, no bundle files exist to verify these references resolve, and the Setup find targets '*/skills/repo-context/SKILL.md' while the frontmatter name is 'ghost-repo-context' — a path mismatch that could break reference resolution, leaving a minor navigation gap below anchor 5.

Specificity

The description lists four concrete actions ("detects projects, maps dependencies, and documents code organization into a repo.md file") with a named output artifact, but "Scans directory structure" is comparatively generic, leaving minor gaps in coverage. This sits between the several-specific-actions anchor (4) and the comprehensive anchor (5), closer to 4 because one action lacks concreteness.

Completeness

Both parts are explicit: the 'what' is the four concrete actions with the repo.md deliverable, and the 'when' is a fully spelled-out "Use when the user needs..." clause with concrete trigger scenarios. This directly matches the anchor requiring both what AND when with concrete trigger phrases; the when-clause is explicit, not merely present.

Trigger Term Quality

"Use when the user needs a codebase overview, project structure map, or repository context before security analysis" provides good natural-phrase coverage that users would actually say. Common variations like "understand the codebase" or "map this repository" are missing, so it does not reach the comprehensive-synonym anchor (5).

Distinctiveness Conflict Risk

The repo.md output and "before security analysis" framing carve a clear niche, but "codebase overview" and "project structure map" are triggers that general codebase-exploration skills would also plausibly claim. Mostly distinct with minor overlap risk against closely related exploration skills — anchor 4 rather than 5.