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ultracite

Ultracite multi-provider linting/formatting (Biome, ESLint, Oxlint). Use for v6/v7 setup, provider selection, Git hooks, MCP integration, AI hooks, migrations, or encountering configuration, type-aware linting, monorepo errors.

73

Quality

92%

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SecuritybySnyk

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SKILL.md
Quality
Evals
Security

Quality

Content

85%Weight 40%Scale 1-3

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

The body is highly actionable with executable commands, well-sequenced validation-backed workflows, and exemplary progressive disclosure into real reference files. Its main weakness is conciseness: significant duplication and marketing tone inflate the token budget well beyond what the actionable content requires.

Suggestions

Collapse the duplicated 'When to Use' material: the Summary section (lines 838-889) restates the When-to-Use, provider-selection, and installation blocks already covered in the body — delete or shorten to a one-line pointer.

Remove promotional framing ('Lightning-Fast Performance', '10-100x faster than ESLint', 'Benefits vs Alternatives' marketing bullets) that does not guide Claude's actions; keep only the concrete tradeoffs (speed vs ecosystem) needed for provider choice.

Trim the Overview/Core Goals list to the few facts Claude cannot infer (the three providers and their roles); the 'Key Benefits vs Alternatives' section largely restates capabilities already detailed in 'Choosing a Provider'.

DimensionReasoningScore

Conciseness

The body is ~785 lines and repeats major blocks verbatim — 'When to Use' (lines 130-160) recurs as the Summary 'Use when'/'Consider alternatives when' (lines 838-853), provider selection (176-208) and installation (314-373) are restated in the Summary, and promotional phrasing ('Lightning-Fast Performance', '10-100x faster') pads rather than instructs. It earns a 2 (executable content present but could be tightened significantly) rather than a 3 (lean, every token earns its place) and rather than a 1 because the bulk is actionable commands/configs, not explanations of concepts Claude lacks.

2 / 3

Actionability

Throughout the body are copy-paste-ready, complete examples: init commands per package manager (lines 316-333), a full biome.jsonc with comments (437-460), VS Code settings JSON (491-509), and package.json scripts — matching the 'fully executable code/commands; copy-paste ready' anchor rather than the pseudocode anchor at 2.

3 / 3

Workflow Clarity

Multi-step workflows are sequenced with explicit validation checkpoints: the v6→v7 migration (lines 230-234) runs 'ultracite doctor' to validate before 'ultracite check .' to test, and Verify Installation (411-422) shows expected success output. This matches the 'clear sequence with explicit validation steps' anchor; the weaker 'Test thoroughly' step in manual migration keeps it from being a weaker 2.

3 / 3

Progressive Disclosure

SKILL.md is an overview that signals one-level-deep references to verified-real files (all 14 references/*.md and both scripts/*.sh exist), and the 'When to Load References' section (719-825) maps each file to concrete user-question triggers. This matches the 'clear overview with well-signaled one-level-deep references; easy navigation' anchor; references are one level deep, not nested.

3 / 3

Total

11

/

12

Passed

Description

100%Weight 40%Scale 1-3

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 third-person, concise, and clearly states both what the skill does and when to use it, with a strong set of natural trigger terms and concrete capabilities. It is a model of the 'good overall' examples with no padding or over-claims.

DimensionReasoningScore

Specificity

Lists multiple concrete actions across the domain — 'setup, provider selection, Git hooks, MCP integration, AI hooks, migrations' — naming the three providers explicitly (Biome, ESLint, Oxlint), which matches the 'lists multiple specific concrete actions' anchor rather than the partial 'names domain and some actions' anchor below.

3 / 3

Completeness

Explicitly answers both what ('Ultracite multi-provider linting/formatting (Biome, ESLint, Oxlint)') and when ('Use for v6/v7 setup, provider selection, Git hooks, ...'), matching the 'clearly answers both what AND when' anchor; not a 2 because the trigger guidance is explicit, not merely implied.

3 / 3

Trigger Term Quality

The 'Use for...' clause surfaces natural terms users would actually say — 'v6/v7 setup', 'Git hooks', 'MCP integration', 'AI hooks', 'migrations', 'monorepo errors', 'type-aware linting' — giving good coverage rather than only a few relevant keywords.

3 / 3

Distinctiveness Conflict Risk

Names the specific product (Ultracite) and includes version-specific triggers (v6/v7), giving it a clear niche unlikely to fire for a generic linting skill; not a 2 because the Ultracite qualifier and versioned triggers make overlap unlikely.

3 / 3

Total

12

/

12

Passed

Validation

87%

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

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

skill_md_line_count

SKILL.md is long (889 lines); consider splitting into references/ and linking

Warning

metadata_field

'metadata' should map string keys to string values

Warning

Total

14

/

16

Passed

Repository
secondsky/claude-skills
Reviewed

Table of Contents

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