superagent: Skill for Claude Code

.agents/skills/shellcheck-configuration/SKILL.md

shellcheck-configuration is a skill for Claude Code, Codex from RudyCity/superagent. It costs 35 tokens per session (317 once invoked), scanned A, original, MIT.

A guide to configuring ShellCheck, a tool that checks shell scripts for common mistakes and portability problems. It covers warnings, exclusions, target shells, and CI/CD integration.

In plain words
What is it for?
Use it to set up shell-script linting, understand ShellCheck warnings, configure rules, handle justified exceptions, and enforce checks in CI/CD.
Why use it?
It helps catch script issues before they cause failures and keeps shell code consistent across environments.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is RudyCity/superagent's own configuration. It tells Claude Code and Codex how to work on superagent itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything superagent configures →

Reuse

Borrowing it

Nothing to install: this file belongs to RudyCity/superagent. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/RudyCity/superagent/main/.agents/skills/shellcheck-configuration/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/RudyCity/superagent

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for shellcheck-configuration

README.md
[![agentmods](https://agentmods.dev/badge/skills/rudycity/superagent/shellcheck-configuration.svg)](https://agentmods.dev/skills/rudycity/superagent/shellcheck-configuration)
Your own site
<a href="https://agentmods.dev/skills/rudycity/superagent/shellcheck-configuration"><img src="https://agentmods.dev/badge/skills/rudycity/superagent/shellcheck-configuration.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 317 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.00317
Opus 5 $0.00017 $0.00159
Sonnet 5 $0.00007 $0.00063
Haiku 4.5 $0.00003 $0.00032

Measured 4d ago against content hash 0442d7cb63b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

shellcheck-configuration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/shellcheck-configuration/SKILL.md · 35 lines

What it actually says

ShellCheck Configuration and Static Analysis

Comprehensive guidance for configuring and using ShellCheck to improve shell script quality, catch common pitfalls, and enforce best practices through static code analysis.

When to Use This Skill

  • Setting up linting for shell scripts in CI/CD pipelines
  • Analyzing existing shell scripts for issues
  • Understanding ShellCheck error codes and warnings
  • Configuring ShellCheck for specific project requirements
  • Integrating ShellCheck into development workflows
  • Suppressing false positives and configuring rule sets
  • Enforcing consistent code quality standards
  • Migrating scripts to meet quality gates

Detailed patterns and worked examples

Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.

Best Practices

  1. Run ShellCheck in CI/CD - Catch issues before merging
  2. Configure for your target shell - Don't analyze bash as sh
  3. Document exclusions - Explain why violations are suppressed
  4. Address violations - Don't just disable warnings
  5. Enable strict mode - Use --enable=all with careful exclusions
  6. Update regularly - Keep ShellCheck current for new checks
  7. Use pre-commit hooks - Catch issues locally before pushing
  8. Integrate with editors - Get real-time feedback during development
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 35 lines · 35 tokens per session scan A 0442d7cb63b3

Subscribe to this mod's changes

shellcheck-configuration is a skill published in the GitHub repository RudyCity/superagent (21 stars, last pushed today), licensed MIT. It adds 35 tokens to every session and 317 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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