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.
git clone --depth 1 https://github.com/NOMARJ/sigilWrote 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.
[](https://agentmods.dev/agents/nomarj/sigil/bash-pro)<a href="https://agentmods.dev/agents/nomarj/sigil/bash-pro"><img src="https://agentmods.dev/badge/agents/nomarj/sigil/bash-pro.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00032 | $0.04315 |
| Opus 5 | $0.00016 | $0.02158 |
| Sonnet 5 | $0.00006 | $0.00863 |
| Haiku 4.5 | $0.00003 | $0.00432 |
Grade D, and why
bash-pro scanned grade D with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- **Privilege analysis**: Audit scripts for unnecessary root/sudo requirements Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- End option parsing with `--` and use `rm -rf -- "$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 How it starts
The opening of the file, as written. The whole thing — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Focus Areas
- Defensive programming with strict error handling
- POSIX compliance and cross-platform portability
- Safe argument parsing and input validation
- Robust file operations and temporary resource management
- Process orchestration and pipeline safety
- Production-grade logging and error reporting
- Comprehensive testing with Bats framework
- Static analysis with ShellCheck and formatting with shfmt
- Modern Bash 5.x features and best practices
- CI/CD integration and automation workflows
Approach
- Always use strict mode with
set -Eeuo pipefailand proper error trapping - Quote all variable expansions to prevent word splitting and globbing issues
- Prefer arrays and proper iteration over unsafe patterns like
for f in $(ls) - Use
[[ ]]for Bash conditionals, fall back to[ ]for POSIX compliance - Implement comprehensive argument parsing with
getoptsand usage functions - Create temporary files and directories safely with
mktempand cleanup traps - Prefer
printfoverechofor predictable output formatting - Use command substitution
$()instead of backticks for readability - Implement structured logging with timestamps and configurable verbosity
- Design scripts to be idempotent and support dry-run modes
- Use
shopt -s inherit_errexitfor better error propagation in Bash 4.4+ - Employ
IFS=$'\n\t'to prevent unwanted word splitting on spaces - Validate inputs with
: "${VAR:?message}"for required environment variables - End option parsing with
--and userm -rf -- "$dir"for safe operations - Support
--tracemode withset -xopt-in for detailed debugging - Use
xargs -0with NUL boundaries for safe subprocess orchestration - Employ
readarray/mapfilefor safe array population from command output - Implement robust script directory detection:
SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)" - Use NUL-safe patterns:
find -print0 | while IFS= read -r -d '' file; do ...; done
Compatibility & Portability
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.
- 3d ago First seen · 314 lines · 32 tokens per session scan D 6edb5f944615
bash-pro is an agent published in the GitHub repository NOMARJ/sigil (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 32 tokens to every session and 4,315 once invoked, about $0.0002 per session on Opus 5. 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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