date-range-analyzer

Date Range Analyzer - Auto-activating skill for Data Analytics. Triggers on: date range analyzer, date range analyzer Part of the Data Analytics skill category.

1.00x

Quality

Does it follow best practices?

Impact

95%

1.00x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./planned-skills/generated/12-data-analytics/date-range-analyzer/SKILL.md

Evaluation results

97%

-3%

Database Query Performance Review

SQL date range query analysis

Criteria

Without context

With context

Step-by-step structure

100%

SARGable predicate fix

100%

Explicit range boundary

100%

DATEDIFF rewrite

100%

No dialect mismatch

100%

Production-ready SQL file

100%

Performance explanation

100%

Industry standard patterns

100%

Validation of date boundaries

100%

62%

Markdown report quality

100%

Without context: $0.3824 · 2m 5s · 16 turns · 17 in / 7,365 out tokens

With context: $0.5007 · 2m 7s · 22 turns · 312 in / 8,098 out tokens

99%

Retail Sales Trend Analysis

Date range statistical analysis and visualization

Criteria

Without context

With context

Configurable date ranges

100%

Step-by-step structure

100%

Date range filtering

100%

Statistical comparison

100%

Time series chart

100%

Comparison chart

100%

Proper date parsing

100%

Validation of date ranges

75%

87%

Summary report content

100%

Industry standard libraries

100%

Without context: $0.6202 · 2m 40s · 24 turns · 24 in / 10,170 out tokens

With context: $0.7379 · 2m 57s · 27 turns · 28 in / 11,678 out tokens

90%

Monthly KPI Report Generator

Business intelligence date range reporting

Criteria

Without context

With context

Date range as variables

100%

Data validation section

91%

100%

Partial month detection

83%

100%

Per-month KPI table

100%

Month-over-month change

100%

Period summary totals

100%

Step-by-step script structure

100%

Standard library usage

100%

Output validated against standards

10%

Production-ready report

100%

Without context: $0.3276 · 1m 34s · 15 turns · 15 in / 6,300 out tokens

With context: $0.5400 · 2m 21s · 26 turns · 26 in / 8,635 out tokens

Repository: jeremylongshore/claude-code-plugins-plus-skills
Commit: 0c08951

Evaluated: 18 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Database Query Performance Review Retail Sales Trend Analysis Monthly KPI Report Generator

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