Content
65%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A dense, actionable reference body with excellent executable SQL and a strong decision-routing structure. It is held back by verbosity in one long rule bullet, missing validation checkpoints for destructive DDL operations, and five referenced bundle files that are not actually present in the skill bundle.
Suggestions
Ship the five referenced files (1-managed-iceberg-tables.md ... 5-external-engine-interop.md) in references/, or remove the dangling links — the progressive-disclosure promise currently resolves to nothing.
Add a validation/verification checkpoint to the UniForm and CREATE TABLE flows (e.g., confirm 'delta.universalFormat.enabledFormats' = 'iceberg' and check Iceberg metadata via DESCRIBE EXTENDED before declaring success), since enabling UniForm and disabling deletion vectors are destructive/irreversible-ish operations.
Split the oversized PARTITIONED BY vs CLUSTER BY rule bullet into a short rule plus a compact two-row comparison table to remove the embedded parenthetical padding.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Mostly efficient — critical rules, concept table, executable SQL, and a capability matrix all earn their place — but the PARTITIONED BY/CLUSTER BY rule bullet is a long padded run-on with embedded parentheticals that could be split and tightened; not level 3 because not every token earns its place. | 2 / 3 |
Actionability | Provides fully executable, copy-paste-ready SQL in three CREATE TABLE variants and an ALTER TABLE SET TBLPROPERTIES block, plus concrete values ('delta.enableDeletionVectors' = false, 'Iceberg library 1.9.0+'); not level 2 because the guidance is complete and executable rather than pseudocode. | 3 / 3 |
Workflow Clarity | A 'When to Use' router and 'Critical Rules' preflight checks give a usable sequence, but the DDL/UniForm operations (enabling UniForm, disabling deletion vectors) are potentially destructive and lack explicit validate->fix->retry checkpoints; capped at 2 per the destructive-operations guideline. | 2 / 3 |
Progressive Disclosure | Structure and signaling are excellent (Reference Files table + When-to-Use routing, one level deep), but the five referenced bundle files (1-managed-iceberg-tables.md through 5-external-engine-interop.md) do not exist in references/, scripts/, or assets/, so the navigation points to missing files; not level 1 because the SKILL.md overview itself is well organized, but the dangling references keep it from a clean 3. | 2 / 3 |
Total | 9 / 12 Passed |