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 xyva-yuangui/XyvaClaw --skill claw-shellgit clone --depth 1 https://github.com/xyva-yuangui/XyvaClawWrote 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/xyva-yuangui/xyvaclaw/claw-shell)<a href="https://agentmods.dev/skills/xyva-yuangui/xyvaclaw/claw-shell"><img src="https://agentmods.dev/badge/skills/xyva-yuangui/xyvaclaw/claw-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.
<a href="https://agentmods.dev/skills/xyva-yuangui/xyvaclaw/claw-shell"><img src="https://agentmods.dev/badge/skills/xyva-yuangui/xyvaclaw/claw-shell.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 | $0.00003 | $0.00372 |
| Opus 5 | $0.00002 | $0.00186 |
| Sonnet 5 | $0.00001 | $0.00074 |
| Haiku 4.5 | $0.00000 | $0.00037 |
Grade C, and why
claw-shell 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 11d 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.
- `rm -rf ...` What it actually says
claw-shell
ALWAYS USES TMUX SESSION claw.
PURPOSE
- RUN SHELL COMMANDS INSIDE TMUX SESSION
claw - NEVER TOUCH ANY OTHER SESSION
- READ OUTPUT BACK TO THE AGENT
INTERFACE
Tool: claw_shell_run
Inputs:
command(string, required): shell command to run inside sessionclaw.
Behavior:
- Attach to tmux session
claw(create it if missing:tmux new -s claw -d). - Send the command followed by Enter.
- Capture the latest pane output.
- Return the captured output to the agent.
SAFETY
- DO NOT RUN:
sudorm(without explicit user approval)reboot,shutdown, or destructive system-level commands
- IF THE COMMAND CONTAINS ANY OF THE ABOVE:
- ASK USER FOR CONFIRMATION BEFORE EXECUTING.
EXAMPLES
-
SAFE:
ls -labird read https://x.com/...git status
-
DANGEROUS (ASK FIRST):
rm -rf ...docker system prune -achmod -R ...
What ships with it
6 files 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.
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.
- 11d ago First seen · 60 lines · 3 tokens per session scan C 6a9d323549db
claw-shell is a skill published in the GitHub repository xyva-yuangui/XyvaClaw (21 stars, last pushed 1mo ago), licensed MIT. It adds 3 tokens to every session and 372 once invoked, about $0.0000 per session on Opus 5. 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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