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xlsx

Create/edit/analyze/verify spreadsheet workbooks including XLSX/CSV/TSV.

60

Quality

70%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

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tessl review fix ./crates/tui/assets/skills/xlsx/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%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 body is appropriately lean and well-structured for a simple skill, but its workflow steps are vague and lack concrete, executable guidance or explicit validation feedback loops.

Suggestions

Add concrete, executable guidance, e.g. specific library calls or commands for editing and verifying workbooks.

Make the validation step an explicit feedback loop (validate -> fix -> re-validate) rather than a single 'verify by reopening' hint.

Specify the tooling or approach for formulas (e.g. a named library or formula audit method) so the 'keep formulas auditable' step is actionable.

DimensionReasoningScore

Conciseness

The body is extremely lean with no padding or over-explanation; every line (When to use, Compatibility, Workflow) earns its place and assumes Claude's competence.

5 / 5

Actionability

Steps like "Prefer structured tables with clear headers" and "Keep formulas auditable" are high-level hints with no concrete code, commands, or library specifics, matching the minimal-concrete-guidance anchor; not a 3 because there is no executable guidance at all.

2 / 5

Workflow Clarity

Three steps are sequenced and step 3 mentions verification ("Verify by reopening and checking key cells/aggregates"), but there is no explicit validation feedback loop for potentially destructive edits, which caps this skill's workflow clarity at 3.

3 / 5

Progressive Disclosure

The skill is under 50 lines with no bundle files and is organized into clear sections (When to use, Compatibility, Workflow), qualifying for a 5 under the simple-skills exception.

5 / 5

Total

15

/

20

Passed

Description

75%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.

The description is specific and well-distinguished, naming concrete actions and file formats, but it lacks an explicit 'Use when...' trigger clause, which caps its completeness.

Suggestions

Add an explicit trigger clause, e.g. "Use when the user works with spreadsheets, tabular data, or .xlsx/.csv/.tsv files."

Include natural synonyms such as "Excel files" alongside XLSX/CSV/TSV to improve trigger-term coverage.

DimensionReasoningScore

Specificity

"Create/edit/analyze/verify spreadsheet workbooks including XLSX/CSV/TSV" lists four concrete verbs and names the supported formats, matching the comprehensive-coverage anchor; not a 4 because coverage is broad rather than having minor gaps.

5 / 5

Completeness

The "what" is clear (create/edit/analyze/verify workbooks) but there is no explicit "Use when..." trigger clause, which caps completeness at 3 per the judging guidelines.

3 / 5

Trigger Term Quality

"spreadsheet workbooks" plus "XLSX/CSV/TSV" extensions give good keyword coverage, but common natural phrasings like "Excel files" or ".xlsx" are missing, placing it between the 3 and 5 anchors.

4 / 5

Distinctiveness Conflict Risk

The spreadsheet niche with explicit XLSX/CSV/TSV extensions gives a clear, distinct trigger surface with minimal overlap with other skills.

5 / 5

Total

17

/

20

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

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
Hmbown/CodeWhale
Reviewed

Table of Contents

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