bash-pro

bash-pro is a skill for Claude Code, Codex from rootcastleco/rei-skills. It costs 0 tokens per session (4,342 once invoked), scanned D, original, no licence file.

A guide to writing Bash scripts that handle errors and unusual situations safely in production automation.

In plain words
What is it for?
It is for Bash automation, CI/CD scripts, and other command-line tools used in production.
Why use it?
It helps prevent shell scripts from failing silently or behaving dangerously when inputs or commands go wrong.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It is for Bash automation, CI/CD scripts, and other command-line tools used in production.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rootcastleco/rei-skills/bash-pro
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add rootcastleco/rei-skills --skill bash-pro
Clone the repo
git clone --depth 1 https://github.com/rootcastleco/rei-skills

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 bash-pro

README.md
[![agentmods](https://agentmods.dev/badge/skills/rootcastleco/rei-skills/bash-pro.svg)](https://agentmods.dev/skills/rootcastleco/rei-skills/bash-pro)
Your own site
<a href="https://agentmods.dev/skills/rootcastleco/rei-skills/bash-pro"><img src="https://agentmods.dev/badge/skills/rootcastleco/rei-skills/bash-pro.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,342 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00000 $0.04342
Opus 5 $0.00000 $0.02171
Sonnet 5 $0.00000 $0.00868
Haiku 4.5 $0.00000 $0.00434

Measured 4d ago against content hash 26fcd83c642e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade D, and why

bash-pro scanned grade D with 3 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- **Privilege analysis**: Audit scripts for unnecessary root/sudo requirements

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- End option parsing with `--` and use `rm -rf -- "$dir"` for safe operations

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Implement `timeout` for external commands: `timeout 30s curl ...` prevents hangs
skills/bash-pro/SKILL.md · 321 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 321 lines · 0 tokens per session scan D 26fcd83c642e

Subscribe to this mod's changes

bash-pro is a skill published in the GitHub repository rootcastleco/rei-skills (6 stars, last pushed today), with no licence file. It costs nothing until one of its globs matches a file; then it loads 4,342 tokens. A static security scan graded it D with 3 findings (asks for root, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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