interval-difference-analyzer

Analyze differences in program intervals between two versions of a program (old and new) to identify added, removed, or modified intervals. Use when comparing program versions, analyzing variable ranges, detecting behavioral changes in numeric computations, validating refactorings, or assessing migration impacts. Supports optional test suite integration to validate interval changes. Generates comprehensive reports highlighting intervals requiring further testing or verification.

1.85x

Quality

69%

Does it follow best practices?

Impact

100%

1.85x

Average score across 3 eval scenarios

Securityby

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/interval-difference-analyzer/SKILL.md

Quality

Content

50%Weight 40%Scale 1-5

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

The skill provides an executable core workflow and reasonable structure, but is held back by padded conceptual explanations, missing validation steps in a batch workflow, and two referenced scripts that are absent from the bundle.

Suggestions

Remove the "What Are Program Intervals?" and "Interval Extraction Methods" concept-explanation sections (or move them into the existing references files) to cut padding Claude does not need.

Add an explicit validation/verification step to the core workflow — e.g., re-running the analyzer or sanity-checking the report counts — since this is a batch operation.

Either add the missing scripts/validate_intervals.py and scripts/generate_interval_tests.py to the bundle or drop the commands that reference them so no documented path is broken.

Dimension	Reasoning	Score
Conciseness	The core workflow is efficient, but sections like "What Are Program Intervals?" and "Interval Extraction Methods" explain concepts Claude already knows and add padded one-line descriptions of static/dynamic/abstract analysis that earn their place poorly.	3 / 5
Actionability	The main three-step workflow gives concrete copy-paste bash commands, but the extraction-methods section offers only abstract descriptions, and two referenced scripts (validate_intervals.py, generate_interval_tests.py) do not exist in the bundle — concrete gaps beyond minor.	3 / 5
Workflow Clarity	The four-step core workflow is clearly sequenced, but there are no validation or verification checkpoints for this batch analysis operation, which the rubric caps at 3 even when steps are otherwise clear.	3 / 5
Progressive Disclosure	References are clearly signaled with markdown links and one level deep, but substantial concept content that belongs in the reference files is inlined, and two referenced script paths are broken (missing files), so organization is only partly effective.	3 / 5
	Total	12 / 20 Passed

Description

88%Weight 40%Scale 1-5

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

A strong description that clearly states both capability and use-when triggers with concrete actions and a well-defined niche. Minor overlap risk from broadly applicable terms like "comparing program versions" keeps distinctiveness just below top marks.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete actions — "identify added, removed, or modified intervals", "validate interval changes", "Generates comprehensive reports highlighting intervals requiring further testing or verification" — giving comprehensive coverage rather than vague language.	5 / 5
Completeness	Explicitly answers both what ("Analyze differences in program intervals...to identify added, removed, or modified intervals" plus report generation) and when ("Use when comparing program versions, analyzing variable ranges...") with concrete trigger phrases.	5 / 5
Trigger Term Quality	Includes several natural trigger phrases ("comparing program versions", "analyzing variable ranges", "validating refactorings", "assessing migration impacts"), but the phrasing leans technical and a few common synonyms are missing.	4 / 5
Distinctiveness Conflict Risk	The "program intervals" / "variable ranges" framing carves a clear niche, but "comparing program versions" and "validating refactorings" are broad enough to overlap with adjacent skills.	4 / 5
	Total	18 / 20 Passed

Validation

93%

Warnings & errors only

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

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
referenced_paths_exist	Referenced path issues: 4 missing	Warning

	Total	15 / 16 Passed

Repository: ArabelaTso/Skills-4-SE
Path: skills/interval-difference-analyzer/SKILL.md
Commit: 4f38503

Reviewed: 9 days ago

Table of Contents

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