refactor

Safely refactor code while preserving behavior

1.00x

Quality

40%

Does it follow best practices?

Impact

91%

1.00x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./music-analytics-api-with-db-routed/.claude/skills/refactor/SKILL.md

Evaluation results

100%

Order Processing Refactor

Refactor untested code — write tests first

Criteria

Without context

With context

Tests written first

100%

Tests run before changes

100%

Tests run after changes

100%

Test file present

100%

Docstrings on new functions

100%

Behavior preserved

100%

Helpers extracted

100%

Coverage gaps noted

100%

No behavior changes described

100%

99%

-1%

Text Pipeline Cleanup

Refactor with existing tests — preserve behavior

Criteria

Without context

With context

Tests run before

100%

Tests run after

100%

Docstrings on new functions

100%

Behavior preserved

100%

Duplication removed

100%

Diff review noted

100%

Coverage gaps identified

100%

No logic changes

100%

Incremental approach described

100%

80%

75%

Sales Report Module Refactoring

Extract helpers from complex function with docstrings

Criteria

Without context

With context

Tests written before refactoring

Tests run before changes

30%

Tests run after changes

100%

Helpers extracted

100%

Docstrings on extracted functions

100%

Behavior preserved

100%

93%

Test file present

100%

Coverage gaps identified

100%

Incremental approach

100%

60%

Repository: datacamp/files-software-development-claude-code
Commit: fd49168

Evaluated: 15 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Order Processing Refactor Text Pipeline Cleanup Sales Report Module Refactoring

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.