Master of defensive Bash scripting for production automation, CI/CD pipelines, and system utilities. Expert in safe, portable, and testable shell scripts.
42
Quality
28%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./.agent/skills/bash-pro/SKILL.mdQuality
Discovery
22%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 relies heavily on self-promotional language ('Master of', 'Expert in') rather than describing concrete capabilities. It fails to provide any guidance on when Claude should select this skill and lacks specific actionable verbs describing what the skill actually does.
Suggestions
Replace vague claims with specific actions: 'Write defensive Bash scripts with error handling, create CI/CD pipeline scripts, build portable shell utilities, debug shell scripts'
Add explicit trigger guidance: 'Use when the user asks about Bash scripts, .sh files, shell automation, cron jobs, or CI/CD shell commands'
Remove first-person promotional language ('Master of', 'Expert in') and use third-person action verbs instead
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Uses vague, abstract language like 'Master of' and 'Expert in' without listing concrete actions. No specific capabilities are described - only broad domains like 'production automation' and 'CI/CD pipelines'. | 1 / 3 |
Completeness | Partially addresses 'what' at a high level but completely lacks any 'when' guidance. No 'Use when...' clause or explicit trigger conditions are provided. | 1 / 3 |
Trigger Term Quality | Contains some relevant keywords users might say ('Bash', 'CI/CD', 'shell scripts', 'automation') but missing common variations like 'bash script', '.sh files', 'cron jobs', 'deploy scripts', or specific commands. | 2 / 3 |
Distinctiveness Conflict Risk | Bash/shell scripting is somewhat specific, but 'automation' and 'CI/CD' are broad terms that could overlap with many other skills (Python automation, deployment tools, etc.). | 2 / 3 |
Total | 6 / 12 Passed |
Implementation
35%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is comprehensive but severely over-documented, explaining many Bash best practices that Claude already knows (quoting variables, using local, consistent naming). The content would benefit from aggressive trimming to focus on project-specific patterns, with concrete script templates replacing the extensive bullet-point lists. The sub-skill structure is promising but the main document should be a lean overview rather than duplicating detailed guidance.
Suggestions
Reduce content by 70%+ by removing explanations of standard Bash practices Claude already knows (variable quoting, naming conventions, indentation) and keeping only project-specific patterns or unusual requirements
Add 2-3 complete, executable script templates demonstrating the defensive patterns in context rather than isolated snippets
Move detailed sections (Safety & Security, Performance, Documentation Standards) into the referenced sub-skills and keep only a brief summary with links in the main file
Add explicit validation checkpoints to the Instructions workflow, e.g., 'Run ShellCheck before proceeding' with specific commands and expected output
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Extremely verbose with extensive lists of best practices Claude already knows. Sections like 'Readability & Maintainability' explain basic coding conventions (snake_case, consistent indentation, descriptive names) that don't need explicit instruction. The document is over 200 lines of guidance that could be condensed to essential project-specific patterns. | 1 / 3 |
Actionability | Contains some concrete code snippets (strict mode, script directory detection, NUL-safe patterns) but most content is descriptive bullet points rather than executable examples. Missing complete, copy-paste ready script templates that demonstrate the patterns in context. | 2 / 3 |
Workflow Clarity | The 'Instructions' section provides a 4-step workflow but lacks validation checkpoints and feedback loops. For a skill involving potentially destructive operations (automation, CI/CD), there's no explicit 'validate before proceeding' step or error recovery guidance in the workflow itself. | 2 / 3 |
Progressive Disclosure | References 7 sub-skills at the end which is good structure, but the main document is a monolithic wall of bullet points that should be distributed across those sub-skills. The 'Essential Tools' section header has no content before jumping to sub-skill links, suggesting incomplete organization. | 2 / 3 |
Total | 7 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
metadata_version | 'metadata.version' is missing | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
3395991
Table of Contents
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