Conciseness

The body is ~360 lines of dense operational prose with real redundancy: the Inputs table, the "Batch configuration" narrative, and the "Batch configuration fields" table restate the same decisions (profile/rebuild, platform default, registry/repository, tag) two to three times, and the interactive-component UI guidance is spread across multiple paragraphs. It never explains concepts Claude already knows (no Docker tutorials), so it is clearly above anchor 2, but the repetition is more than the "minor instances of over-explanation" that anchor 4 tolerates.

Actionability

Every step ships an executable, copy-paste-ready command: the collector invocations with all flags, `build_binary.sh` variants for amd64/arm64/Enterprise, `prepare_context.sh` with `mktemp -d`, `build_image.sh` with `--mode local|push`, `next_image_tag.py`, `update_image_env.py`, and verification commands (`docker image inspect ... --format`, `docker run --rm ... --help`, `docker buildx imagetools inspect`). Placeholders are consistently parameterized and referenced scripts all exist.

Workflow Clarity

The sequence is explicit and gated: preflight collector → batch configuration → `.env` handling → tooling inspection → binary build → context preparation → image build/push → verification, with validation checkpoints at exactly the risky points (`file` architecture check before image build, registry-tag existence check before push, image inspect/`--help` run after build) and explicit error-recovery paths ("If the requested target is unavailable, stop and ask...", "If Cargo metadata ... is unavailable, stop before building").

Progressive Disclosure

Scored against the actual bundle: all paths referenced in the body (scripts/collect_context.py, build_binary.sh, prepare_context.sh, build_image.sh, next_image_tag.py, update_image_env.py, assets/Dockerfile) exist, are referenced one level deep with full invocation examples, and the body's sections are clearly headed. It falls short of anchor 5 because there is no references/ split at all — the ~90-line interactive-workflow UI specification is inlined in SKILL.md and would sit better in a reference file.

Specificity

"Builds a development-only GreptimeDB Docker image from a local debug binary for local-cluster testing, and optionally pushes it to a development registry" names several concrete actions (build/package from a local binary, push to a registry, implied tagging and cross-build via the trigger clause). It stays short of anchor 5 because the what-clause centers on two actions; the remaining coverage (tag, cross-build) appears only as trigger verbs.

Completeness

The what is explicit and concrete (build a development-only Docker image from a local debug binary, optionally push to a development registry) and the when is explicit with concrete trigger phrases ("Use when the user asks to package, build, tag, publish, or cross-build a non-release GreptimeDB or GreptimeDB Enterprise image for debugging"), matching the anchor-5 example structure exactly.

Trigger Term Quality

"package, build, tag, publish, or cross-build" plus "GreptimeDB", "GreptimeDB Enterprise", "Docker image", and "debugging" give good natural-language coverage with multiple synonyms. It is not anchor 5 because a few phrasings users would plausibly say (e.g. "make a dev image", "containerize GreptimeDB") are absent, but it is clearly above the midpoint of "some relevant keywords, missing variations".

Distinctiveness Conflict Risk

The niche is unambiguous: development-only, non-release GreptimeDB images, with explicit exclusion of production/release artifacts stated in the trigger ("non-release ... image for debugging"). A general Docker or release-image skill would not be wrongly triggered.