Content
78%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.
A dense, highly actionable API reference with executable examples and a strong decision-rule sequence, weakened mainly by monolithic structure — no detail is offloaded to reference files — and the absence of an explicit output-validation step after write_rrd. Conciseness is good overall with a few over-explained passages.
Suggestions
Split the Selector grammar and full lens/output-mode reference into references/ files (e.g., references/selector-grammar.md, references/lenses.md), keeping SKILL.md as the decision-rule overview — this would also cut context-window cost.
Add an explicit verification step after write_rrd (e.g., 'read back with RrdReader(path).stream() and spot-check entity/timeline counts before declaring success') to close the workflow's validation gap.
Trim the recording-properties anti-example to one code block plus a single sentence on the '# type: ignore' signal.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Mostly lean, telegraphic prose ('Execution is streaming, multithreaded, and mostly GIL-free') with no explanation of concepts Claude already knows, but a few passages over-explain — the recording-properties section spends two code blocks plus three bullets on why '/__properties/ is Rerun's internal layout', which could be trimmed to the 'do this' example and one line. Fits 'efficient; minor instances of over-explanation' rather than the fully lean anchor. | 4 / 5 |
Actionability | Copy-paste-ready code covers the common cases: MutateLens resolution fix, DeriveLens unit conversion via PyArrow compute, sidecar Chunk.from_columns, Chunk.from_property, and the merge→write_rrd pipeline — plus an executable surface-check command ('python -c "from rerun.chunk import LazyChunkStream; help(LazyChunkStream)"') and a real end-to-end example URL. Not below 5: the examples span the skill's core operations and are complete, not pseudocode. | 5 / 5 |
Workflow Clarity | The 6-step 'Decision rule' section gives a clear, sequenced decision procedure, and the pyarrow error-smell passage provides a diagnose→refactor feedback loop. Not 5: there is no explicit post-write verification step (e.g., reading the written RRD back with RrdReader to confirm), so a checkpoint is implicit ('pin-check signatures') rather than commanded. | 4 / 5 |
Progressive Disclosure | Good inline structure with clean ## sections and a clearly signaled References section, but no bundle files exist and ~300 lines of API reference (full lens/output-mode semantics, Selector grammar, stream composition API) are inlined in SKILL.md where a references/ split would be appropriate. Matches 'some structure... content that should be separate is inline' better than the mostly-appropriate-placement anchor. | 3 / 5 |
Total | 16 / 20 Passed |