This skill should be used when the user says "ensure config", "check arn spark config", "arn-spark-ensure-config", "verify arn spark setup", "configure spark", "setup arness spark", "spark config", or wants to verify that Arness Spark configuration is present for the current project. This skill is primarily consumed as a reference by entry-point skills (arn-brainstorming, arn-spark-discover, arn-spark-arch-vision) which read the `references/step-0-fast-path.md` reference as Step 0 before proceeding with their workflow.
60
70%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./plugins/arn-spark/skills/arn-spark-ensure-config/SKILL.mdQuality
Discovery
89%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This description excels at trigger term coverage and completeness, providing explicit 'use when' guidance with numerous natural trigger phrases. It is highly distinctive due to its niche focus on Arness Spark configuration. The main weakness is that the specificity of concrete actions is somewhat limited—it primarily describes verification/checking rather than listing multiple distinct operations the skill performs.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | The description names the domain (Arness Spark configuration) and mentions actions like 'verify' and 'ensure config is present,' but it doesn't list multiple concrete actions beyond checking/verifying configuration. It also describes how it's consumed by other skills, which adds some specificity about its role but not about what it concretely does. | 2 / 3 |
Completeness | The description clearly answers both 'what' (verify that Arness Spark configuration is present for the current project, serve as a reference for entry-point skills) and 'when' (explicit trigger phrases and the condition 'wants to verify that Arness Spark configuration is present'). The 'Use when' guidance is explicit and thorough. | 3 / 3 |
Trigger Term Quality | The description includes an extensive list of natural trigger phrases users might say: 'ensure config', 'check arn spark config', 'verify arn spark setup', 'configure spark', 'setup arness spark', 'spark config', and several variations. This provides excellent coverage of terms a user would naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | The description is highly specific to 'Arness Spark configuration' with very distinct trigger terms like 'arn-spark-ensure-config' and 'arness spark.' It also clarifies its relationship to other specific skills (arn-brainstorming, arn-spark-discover, arn-spark-arch-vision), making it very unlikely to conflict with unrelated skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
50%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill functions primarily as a routing document that points to reference files for all actual content. While the file paths are specific and the architecture (cache-based fast-path) is clearly explained, the SKILL.md itself provides almost no actionable guidance — it's essentially 'go read another file.' The lack of any inline workflow steps, validation checkpoints, or concrete commands means a reader gains little from this file alone.
Suggestions
Inline at least a summary of the validation workflow steps (Layers 1-3) so the SKILL.md provides standalone value even if details are in references.
Add concrete examples of what 'valid user profile' and '## Arness section' look like, or at minimum describe what is being validated.
Include the cache-check shell command inline or show what the fast-path script does at a high level, so the workflow is understandable without reading referenced files.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Mostly efficient but includes some unnecessary explanation. The paragraph about entry points and the '~95% token cost' savings is context that could be trimmed. The description of when it's invoked directly ('rare — typically via...') adds minor bloat. | 2 / 3 |
Actionability | The skill provides specific file paths to read and follow, which is somewhat concrete, but the actual instructions are entirely delegated to referenced files (ensure-config.md, step-0-fast-path.md). The SKILL.md itself contains no executable code, commands, or concrete steps — it's a pointer to other files. | 2 / 3 |
Workflow Clarity | The workflow section is a single step: 'Read this file and follow its instructions.' While it mentions Layers 1-3, the actual sequence, validation checkpoints, and error recovery are all deferred to the referenced file. There's no inline clarity about what happens if validation fails or how errors are handled. | 2 / 3 |
Progressive Disclosure | The skill correctly delegates to reference files (step-0-fast-path.md, ensure-config.md) with clear paths, which is good progressive disclosure. However, without bundle files to verify these references exist and are well-structured, and given the body provides almost no standalone value, it leans toward being an over-thin pointer rather than a useful overview. | 2 / 3 |
Total | 8 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
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Table of Contents
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