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data-scientist

Expert data scientist for advanced analytics, machine learning, and statistical modeling. Handles complex data analysis, predictive modeling, and business intelligence. Use PROACTIVELY for data analysis tasks, ML modeling, statistical analysis, and data-driven insights.

43

Quality

43%

Does it follow best practices?

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SecuritybySnyk

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tessl review fix ./skills/data-scientist/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

20%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a verbose persona/capability catalog that enumerates statistical and ML concepts Claude already knows, with no executable code, commands, or concrete procedural guidance. It has section structure and a high-level workflow sequence, but lacks validation checkpoints and adds little actionable value beyond Claude's baseline knowledge.

Suggestions

Cut the algorithm and library enumerations (Statistical Analysis, Machine Learning, Programming, etc.) that merely list what Claude already knows; keep only genuinely skill-specific guidance or decision rules.

Replace abstract Response Approach steps with concrete, executable procedures — e.g. named checks for train/test leakage, a validation snippet for model evaluation, or specific commands for deployment — so the body instructs rather than describes.

Add explicit validation/verification checkpoints into the workflow (e.g. "confirm train/test split is leakage-free before tuning", "validate predictions against a holdout before reporting") to support the risky operations the skill covers.

DimensionReasoningScore

Conciseness

The ~190-line body catalogs algorithms and libraries Claude already knows ("Descriptive statistics, inferential statistics", "linear/logistic regression, decision trees, random forests, XGBoost", "ARIMA, Prophet"), which is exactly the padded, redundant context the rubric penalizes. It is not a 2 because almost none of the enumerated capability knowledge adds value beyond Claude's baseline; it is above 1 only insofar as the prose is list-formatted rather than explanatory paragraphs.

1 / 3

Actionability

There is no executable code, commands, or copy-paste guidance anywhere; the body describes capabilities ("Model selection and hyperparameter tuning with cross-validation and Optuna") rather than instructing how to do anything. Not a 2 because even the Response Approach steps ("Apply appropriate methods", "Validate results rigorously") are abstract directions with no concrete mechanism; it stays at 1 matching the 'describes rather than instructs' anchor.

1 / 3

Workflow Clarity

The Response Approach provides an 8-step sequence and the Instructions list a rough flow, but the steps are abstract and contain no validation checkpoints or feedback loops for risky operations (e.g. model deployment, batch pipelines). Not a 3 because there are no explicit validation/verification gates; not a 1 because a genuine ordered sequence does exist.

2 / 3

Progressive Disclosure

No bundle files exist (references/scripts/assets are absent), so the body is a single monolithic SKILL.md. It is organized with clear section headers, but the long inline capability catalog is content that should be trimmed or split into reference files, and no external navigation is signaled. Not a 3 because nothing is offloaded and the file far exceeds a lean overview; not a 1 because headers give reasonable structure rather than a disorganized wall.

2 / 3

Total

6

/

12

Passed

Description

67%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is well-formed: it answers both what and when with an explicit "Use PROACTIVELY for" trigger clause and uses appropriate third-person voice. Its main weakness is generic, somewhat buzzwordy capability language and broad triggers that risk overlapping with adjacent analytics skills.

Suggestions

Replace abstract capability labels ("advanced analytics", "business intelligence") with concrete operations a user would request, e.g. "builds churn/forecasting models, runs A/B tests, and analyzes tabular data".

Add common trigger variations users actually say — "machine learning", "data science", "model training", "feature engineering" — to improve trigger-term coverage and reduce overlap with generic analytics skills.

Tighten the trigger clause to a narrower, distinctive scope (e.g. specify predictive modeling or experimentation) so it is less likely to fire for routine data analysis handled by other skills.

DimensionReasoningScore

Specificity

The description names a clear domain and several action areas ("advanced analytics, machine learning, and statistical modeling", "predictive modeling, and business intelligence"), but the verbs are abstract domain labels rather than concrete operations like the anchor's "extract text... fill forms, merge documents". It is not a 3 because no actions are granular/concrete; not a 1 because it does name multiple distinct capability areas.

2 / 3

Completeness

It explicitly answers both what ("Handles complex data analysis, predictive modeling, and business intelligence") and when ("Use PROACTIVELY for data analysis tasks, ML modeling, statistical analysis, and data-driven insights"). The explicit "Use PROACTIVELY for..." trigger clause matches the score-3 anchor exactly; it cannot exceed 3 and is clearly above 2 where 'when' is only implied.

3 / 3

Trigger Term Quality

It includes relevant natural terms users would say ("data analysis tasks", "ML modeling", "statistical analysis", "data-driven insights"), but misses common variations such as the full "machine learning", "data science", or "model training". Not a 3 because coverage is incomplete; not a 1 because several terms are genuinely user-spoken rather than jargon.

2 / 3

Distinctiveness Conflict Risk

"Expert data scientist" is a recognizable niche, but the triggers ("data analysis tasks", "ML modeling") are broad and would overlap with general analytics, BI, or coding skills. Not a 3 because the niche lacks distinct, non-overlapping triggers; not a 1 because it is more specific than generic placeholders like "Helps with documents".

2 / 3

Total

9

/

12

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

15

/

16

Passed

Repository
rmyndharis/antigravity-skills
Reviewed

Table of Contents

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