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.
npx skills add ifiokjr/monopi --skill nushellgit clone --depth 1 https://github.com/ifiokjr/monopiWrote 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/skills/ifiokjr/monopi/nushell)<a href="https://agentmods.dev/skills/ifiokjr/monopi/nushell"><img src="https://agentmods.dev/badge/skills/ifiokjr/monopi/nushell/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ifiokjr/monopi/nushell"><img src="https://agentmods.dev/badge/skills/ifiokjr/monopi/nushell.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00000 | $0.02644 |
| Opus 5.5 | $0.00000 | $0.01058 |
| Sonnet 5.5 | $0.00000 | $0.00529 |
| Haiku 4.5 | $0.00000 | $0.00264 |
Grade C, and why
nushell scanned grade C with 1 finding 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 1mo 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
11. **`rm` is safer**: no `rm -rf` needed, just `rm -r` How it starts
The opening of the file, as written. The whole thing — 334 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nushell Skill
Use this skill whenever the user's shell is Nushell (nu). All shell commands provided to the user must use Nushell syntax, not Bash/POSIX syntax.
Core Concepts
Nushell treats everything as structured data. Pipelines pass tables, lists, and records: not plain text. This is the single biggest difference from Bash.
Variables
# Immutable (preferred)
let name = "world"
let files = (ls) # Parentheses for subexpressions
let big = (ls | where size > 10kb)
# Mutable
mut count = 0
$count += 1
# Constants (parse-time evaluation)
const config_dir = "~/.config"
# Environment variables: use $env.VAR, NOT $VAR
$env.PATH
$env.HOME
$env.PWD
let path = $env.PATH | append "/usr/local/bin"
# $in: the current pipeline input
[1 2 3] | $in.1 # => 2
ls | $in | where size > 1mb
Commands (not like Bash)
Nushell has structured commands, not text-processing tools:
| Task | Bash | Nushell |
|---|---|---|
| List files | ls -la |
ls (already structured) |
| Long listing | ls -la |
ls -l or ls --long |
| Find files recursively | find . -name '*.rs' |
ls **/*.rs |
| Filter by condition | grep pattern |
where name =~ "pattern" or find "text" |
| Sort | sort |
sort-by size |
| Take first N | head -5 |
first 5 |
| Take last N | tail -3 |
last 3 |
| Skip N | tail -n +5 |
skip 4 |
| Read file | cat file.txt |
open file.txt or open --raw file.txt |
| Write file | echo "text" > f.txt |
"text" | save f.txt |
| Append to file | echo "text" >> f.txt |
"text" | save --append f.txt |
| Parse CSV | complex | open data.csv (auto-detects) |
| Parse JSON | jq |
open data.json (auto-detects) |
| Count lines | wc -l |
length |
| Search in files | grep -r pattern dir/ |
rg (via ^rg) or ls **/*.rs | where (open $in.name | str contains "TODO") |
| Replace in strings | sed 's/a/b/g' |
str replace --all 'a' 'b' |
| Parse date | date -d "..." |
"2024-01-01" | into datetime |
| Get help | man cmd |
help cmd or help commands | find substring |
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.
- 1mo ago First seen · 334 lines · 0 tokens per session scan C b79c081e865f
nushell is a skill published in the GitHub repository ifiokjr/monopi (161 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,644 tokens. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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