Notification

Notification is a hook for coding agents from ph3on1x/claude-cmux-skill. Its token cost is not measured, scanned A, original, MIT.

A hook that runs when an agent sends a notification. If a cmux socket is available, it calls the cmux notification command; otherwise it exits without doing anything.

In plain words
What is it for?
Use it to trigger cmux handling whenever the agent sends a notification in a cmux-enabled environment.
Why use it?
It connects agent notifications to cmux when that environment is present, while avoiding an error when cmux is unavailable. The input does not describe what notification is displayed.

Hook

Part of the claude-cmux-skill plugin — 1 skill, 3 hooks shipped together

One of 3 entries in hooks.json — they are configured in one file and arrive together.

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.

agentmods
npx agentmods add hooks/ph3on1x/claude-cmux-skill/notification
Clone the repo
git clone --depth 1 https://github.com/ph3on1x/claude-cmux-skill

Or install claude-cmux-skill, the plugin that ships this one along with the rest of its 1 skill, 3 hooks.

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 Notification

README.md
[![agentmods](https://agentmods.dev/badge/hooks/ph3on1x/claude-cmux-skill/notification.svg)](https://agentmods.dev/hooks/ph3on1x/claude-cmux-skill/notification)
Your own site
<a href="https://agentmods.dev/hooks/ph3on1x/claude-cmux-skill/notification"><img src="https://agentmods.dev/badge/hooks/ph3on1x/claude-cmux-skill/notification.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

Notification 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 5d ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

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.

hooks/hooks.json · 12 lines

What it actually says

{
  "Notification": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "if [ -n \"$CMUX_SOCKET_PATH\" ]; then cmux claude-hook notification; else exit 0; fi"
        }
      ]
    }
  ]
}
Same file

What else hooks.json configures

This page is one entry in a file that holds 3. Installing the file brings all of them; each is measured and scanned on its own page.

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. 5d ago First seen · 12 lines scan A 00bc709cb80f

Subscribe to this mod's changes

Notification is a hook published in the GitHub repository ph3on1x/claude-cmux-skill (9 stars, last pushed 5mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.