Master defensive Bash programming techniques for production-grade scripts. Use when writing robust shell scripts, CI/CD pipelines, or system utilities requiring fault tolerance and safety.
86
Quality
81%
Does it follow best practices?
Impact
96%
1.09xAverage score across 3 eval scenarios
Passed
No known issues
Quality
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 is a well-structured description with an explicit 'Use when' clause and good trigger term coverage for developers seeking robust shell scripting guidance. The main weakness is the lack of specific concrete actions - it describes qualities (defensive, fault-tolerant, safe) rather than listing specific techniques like error handling, input validation, or signal trapping.
Suggestions
Add specific concrete actions to improve specificity, e.g., 'Covers error handling with set -euo pipefail, input validation, signal trapping, safe temporary file handling, and atomic operations.'
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain ('Bash programming', 'shell scripts', 'CI/CD pipelines', 'system utilities') and mentions 'defensive' techniques with qualities like 'fault tolerance and safety', but doesn't list specific concrete actions like 'validate inputs, handle errors, trap signals'. | 2 / 3 |
Completeness | Clearly answers both what ('Master defensive Bash programming techniques for production-grade scripts') and when ('Use when writing robust shell scripts, CI/CD pipelines, or system utilities requiring fault tolerance and safety') with explicit 'Use when' clause. | 3 / 3 |
Trigger Term Quality | Good coverage of natural terms users would say: 'Bash', 'shell scripts', 'CI/CD pipelines', 'system utilities', 'robust', 'fault tolerance', 'safety', 'production-grade'. These are terms developers naturally use when seeking help with reliable scripting. | 3 / 3 |
Distinctiveness Conflict Risk | Clear niche focusing specifically on 'defensive' and 'production-grade' Bash scripting with emphasis on 'fault tolerance and safety'. This distinguishes it from general Bash/scripting skills or basic shell tutorials. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
72%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is well-structured and appropriately concise, correctly deferring detailed patterns to an external playbook. However, it lacks inline executable examples (like the actual strict mode snippet `set -euo pipefail`) that would make it immediately actionable. The workflow could benefit from explicit validation steps for the defensive patterns it teaches.
Suggestions
Add a minimal inline code example showing strict mode setup (e.g., `set -euo pipefail`) so the skill is immediately actionable without requiring the external playbook
Include a concrete validation checkpoint in the workflow, such as 'Run shellcheck on your script before execution'
Add one brief input validation example (e.g., checking if a required argument exists) to demonstrate the defensive pattern inline
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is lean and efficient, avoiding explanations of concepts Claude already knows (like what Bash is or why defensive programming matters). Every section serves a purpose without padding. | 3 / 3 |
Actionability | Instructions are present but abstract ('Enable strict mode', 'Validate inputs') without concrete code examples. The skill defers all executable patterns to an external playbook rather than providing copy-paste ready snippets inline. | 2 / 3 |
Workflow Clarity | The 4-step workflow provides a clear sequence, but lacks explicit validation checkpoints or feedback loops. For scripts involving destructive operations, there's no 'validate -> fix -> retry' pattern shown. | 2 / 3 |
Progressive Disclosure | Clean structure with a concise overview and clear one-level-deep reference to the implementation playbook. The 'Use/Do not use' sections help with discovery, and the external resource is well-signaled. | 3 / 3 |
Total | 10 / 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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