aggregation-helper
Aggregation Helper - Auto-activating skill for Data Analytics. Triggers on: aggregation helper, aggregation helper Part of the Data Analytics skill category.
33
Quality
0%
Does it follow best practices?
Impact
97%
1.02xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./planned-skills/generated/12-data-analytics/aggregation-helper/SKILL.mdQuality
Discovery
0%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This description is critically underdeveloped, consisting only of a skill name, redundant trigger terms, and a broad category label. It provides no concrete actions, no natural user language, and no guidance on when Claude should select this skill. This would be nearly impossible to distinguish from other data-related skills in a multi-skill environment.
Suggestions
Add specific concrete actions the skill performs (e.g., 'Calculates sums, averages, counts, and groupings across datasets. Creates pivot-style aggregations and statistical summaries.').
Include a 'Use when...' clause with natural trigger terms users would say (e.g., 'Use when the user asks to sum data, calculate totals, group records, compute averages, or aggregate values.').
Remove the redundant 'aggregation helper' trigger and replace with varied natural language terms like 'sum', 'total', 'group by', 'rollup', 'aggregate', 'statistics'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | The description contains no concrete actions whatsoever. 'Aggregation Helper' and 'Data Analytics' are abstract labels with no explanation of what the skill actually does (e.g., sum data, group records, calculate averages). | 1 / 3 |
Completeness | The description fails to answer 'what does this do' beyond a vague category label, and has no 'Use when...' clause or explicit trigger guidance. Both what and when are missing or extremely weak. | 1 / 3 |
Trigger Term Quality | The only trigger terms listed are 'aggregation helper' repeated twice, which is technical jargon users would rarely say naturally. Missing common terms like 'sum', 'group by', 'average', 'totals', 'aggregate data'. | 1 / 3 |
Distinctiveness Conflict Risk | 'Data Analytics' is an extremely broad category that could overlap with dozens of other skills. Nothing distinguishes this from other data-related skills; 'aggregation helper' provides minimal differentiation. | 1 / 3 |
Total | 4 / 12 Passed |
Implementation
0%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is entirely meta-content describing what a skill should do rather than providing any actual aggregation guidance. It contains no executable code, no SQL examples, no aggregation patterns, and no concrete instructions. The content is essentially a placeholder template that would provide no value to Claude when performing data analytics tasks.
Suggestions
Add concrete SQL aggregation examples (GROUP BY, HAVING, window functions) with executable code snippets
Include specific aggregation patterns for common use cases like time-series rollups, hierarchical aggregations, or pivot operations
Remove all meta-description content ('This skill provides...', 'Capabilities include...') and replace with actual actionable guidance
Add validation steps for aggregation queries such as checking for NULL handling, verifying group cardinality, or testing edge cases
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is padded with generic boilerplate that provides no actual value. Phrases like 'provides automated assistance' and 'follows industry best practices' are vague filler that Claude doesn't need. | 1 / 3 |
Actionability | There is zero concrete guidance - no code, no commands, no specific examples of aggregation patterns. The content describes what the skill supposedly does but never shows how to actually perform any aggregation task. | 1 / 3 |
Workflow Clarity | No workflow is defined. The skill claims to provide 'step-by-step guidance' but contains no actual steps, sequences, or validation checkpoints for any aggregation task. | 1 / 3 |
Progressive Disclosure | The content is a monolithic block of meta-description with no useful structure. There are no references to detailed materials, examples, or related documentation that would help with actual aggregation tasks. | 1 / 3 |
Total | 4 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
- Commit
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- Reviewed
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