Conciseness

Lean and dense throughout: a symptom→cause table, terse explanations only of non-obvious internals (e.g. "urllib3 and aiohttp.ClientSession() ignore HTTPS_PROXY"), and no padding or explanation of concepts Claude already knows. Every entry carries a fact that is not derivable from general knowledge, matching the lean anchor.

Actionability

Fully executable commands cover the common cases: "sbx policy check network api.example.com", "git config --global --add safe.directory '%(prefix)///wsl.localhost/...'", "update-ca-certificates", the mv/ln -s disk-reclaim recipe, and the rm -rf state-directory paths per OS. Copy-paste ready with concrete values.

Workflow Clarity

Explicit diagnostic sequence with validation checkpoints: triage first ("Start here... sbx policy log / sbx diagnose"), confirm-before-guessing ("Three commands settle it", "Confirm with git -C <path> rev-parse --show-toplevel"), and a numbered escalation ladder explicitly ordered by destructiveness with the safer --preserve-secrets variant and a stop-everything-first precondition. Feedback and safety checks are explicit.

Progressive Disclosure

Well-organized one-level sections with clear symptom-group headers and a quick-start entry point, but roughly 250 lines are all inlined in a single file and cross-skill pointers (creating-sbx-kits, creating-sbx-templates, governing-sbx-fleets) are embedded in prose rather than clearly signaled navigation. Good structure with minor organization gaps, matching anchor 4 rather than 5.

Specificity

Lists several specific concrete capability scopes ("cannot reach a host, install a package, keep a file, or start at all") tied to concrete failure symptoms. It sits just below anchor 5 because the diagnostic scope is summarized by a single verb and does not hint at the full breadth of failure modes the skill covers (e.g. git-mode surprises, memory limits, persistence rules).

Completeness

Explicitly answers "what" ("Work out why a Docker Sandbox cannot reach a host, install a package, keep a file, or start at all") and "when" via an explicit "Use when..." clause with concrete trigger phrases, exactly matching the anchor-5 pattern.

Trigger Term Quality

Natural user phrasings are comprehensive and varied: "a download or clone fails", "a credential is rejected", "a sandbox is killed or stops on its own", "something written inside it disappeared". These mirror how a user would actually describe the problem, matching the top anchor.

Distinctiveness Conflict Risk

Clear niche (Docker Sandbox / sbx diagnostics) with distinct, failure-symptom-based triggers; minimal overlap risk with adjacent container or git skills.