shell

shell is a skill for Claude Code from XyrusCode/ai-sync. It costs 36 tokens per session (187 once invoked), scanned A, a copy of shell, MIT.

A command runner for the special `/shell` request, which treats the text after that request as a shell command.

In plain words
What is it for?
It runs the requested command, then reports its exit status and important output. If `/shell` has no command, it asks what to run.
Why use it?
It lets users run an explicitly supplied terminal command without the tool changing or explaining it first.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Good fit It runs the requested command, then reports its exit status and important output. If /shell has no command, it asks what to run.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/xyruscode/ai-sync/shell
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 XyrusCode/ai-sync --skill shell
Clone the repo
git clone --depth 1 https://github.com/XyrusCode/ai-sync

Made for: Claude Code.

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 shell

README.md
[![agentmods](https://agentmods.dev/badge/skills/xyruscode/ai-sync/shell/github.svg)](https://agentmods.dev/skills/xyruscode/ai-sync/shell)
Your own site
<a href="https://agentmods.dev/skills/xyruscode/ai-sync/shell"><img src="https://agentmods.dev/badge/skills/xyruscode/ai-sync/shell/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.

agentmods 80×15 button for shell

Your own site · 80×15
<a href="https://agentmods.dev/skills/xyruscode/ai-sync/shell"><img src="https://agentmods.dev/badge/skills/xyruscode/ai-sync/shell.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 187 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 100% copy Near-identical to another mod 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 $0.00036 $0.00187
Opus 5.5 $0.00014 $0.00075
Sonnet 5.5 $0.00007 $0.00037
Haiku 4.5 $0.00004 $0.00019

Measured 1mo ago against content hash b354ce28c70a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

shell 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 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.

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.

Origin

This is a copy

100% identical to shell — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/shell/SKILL.md · 25 lines

What it actually says

Run Shell Commands

Use this skill only when the user explicitly invokes /shell.

Behavior

  1. Treat all user text after the /shell invocation as the literal shell command to run.
  2. Execute that command immediately with the terminal tool.
  3. Do not rewrite, explain, or "improve" the command before running it.
  4. Do not inspect the repository first unless the command itself requires repository context.
  5. If the user invokes /shell without any following text, ask them which command to run.

Response

  • Run the command first.
  • Then briefly report the exit status and any important stdout or stderr.
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. 1mo ago First seen · 25 lines · 36 tokens per session scan A b354ce28c70a

Subscribe to this mod's changes

shell is a skill published in the GitHub repository XyrusCode/ai-sync (2 stars, last pushed 18d ago), licensed MIT. It adds 36 tokens to every session and 187 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to shell, differing in 0 lines, and is treated as a copy.

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