Content
75%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The body is a strong, code-heavy overview: executable Quick Start, four complete workflows, and per-module summaries with well-signaled one-level-deep references. The main weaknesses are duplicated sections (Overview and Reference Files repeat content already stated inline) and the fact that every referenced references/*.md file is missing from the bundle, so the disclosed detail layer is absent. Trimming the redundant sections and shipping the reference files would make this an exemplar.
Suggestions
Ship the referenced bundle files (references/units.md, coordinates.md, cosmology.md, fits.md, tables.md, time.md, wcs_and_other_modules.md) — currently none exist, so every "See:" pointer in the body is a dead end.
Delete or fold the "Reference Files" section into the inline per-module pointers (it duplicates all seven) and drop the verbatim repetition of the description in the Overview.
Add lightweight validation guidance to the workflows (e.g. check hdul[1].data is not None, verify header keywords exist before access) to reach explicit-checkpoint quality.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is mostly efficient — capability lists are dense with concrete API names and code dominates over prose — but there is measurable redundancy: the Overview paragraph repeats the frontmatter description verbatim, the "Reference Files" section restates all seven per-module "See:" pointers already given inline, and "Additional Capabilities" re-describes content the wcs_and_other_modules.md reference covers. This fits the 'mostly efficient but could be tightened' anchor; it is not a 4 because two full sections are duplicative, and not a 2 because there is no tutorial-style padding explaining concepts Claude already knows. | 3 / 5 |
Actionability | The body provides fully executable, copy-paste-ready code: a Quick Start exercising units, coordinates, time, FITS, tables, and cosmology; a working install command; and four Common Workflows (coordinate transforms, FITS analysis, cosmological distances, catalog cross-matching) using real APIs with correct imports (SkyCoord, match_to_catalog_sky, Planck18.luminosity_distance). The common cases are covered concretely, matching the top anchor. | 5 / 5 |
Workflow Clarity | The Common Workflows present clear, ordered, self-contained steps with printed outputs (e.g. cross-matching includes a separation threshold check and filtered matched catalogs), and the operations are read-only so destructive-operation validation is not required. It is not a 5 because there are no explicit validation checkpoints or error-recovery guidance (e.g. verifying a FITS file opened correctly or handling missing header keywords), leaving minor validation gaps per the score-4 anchor. | 4 / 5 |
Progressive Disclosure | The body is structured as an overview with each of the seven modules getting a short summary plus a clearly signaled one-level-deep pointer ("See: references/units.md for ..."), which is textbook progressive-disclosure structure. However, the bundle contains no references/ directory — none of the seven referenced files (units.md, coordinates.md, cosmology.md, fits.md, tables.md, time.md, wcs_and_other_modules.md) exist alongside SKILL.md, so navigation as shipped is broken and the detailed content is unreachable. This lands between 'good structure, minor organization gaps' (4) and 'clear overview with well-signaled one-level-deep references' (5); the missing bundle files keep it at 4. | 4 / 5 |
Total | 16 / 20 Passed |