Stop

Stop is a hook for Claude Code from nat-n/poethepoet. Its token cost is not measured, scanned A, original, MIT.

A hook that runs the `poe format` command when the agent finishes a response. Poe is a tool for defining and running project tasks.

In plain words
What is it for?
Running the project's formatting task after each completed agent response.
Why use it?
It can format project files automatically after the agent stops, so formatting happens as part of the response lifecycle.

Hook for Claude Code

Written for Claude Code: installed under .claude/.

One of 2 entries in settings.json — they are configured in one file and arrive together.

About the project

Poe the Poet is a task runner that lets Python projects define and run named commands from project configuration, including commands, scripts, Python code, and reusable functions. It is used with Poetry, uv, or other environments to automate development workflows. Its catalogue skill helps coding agents use Poe tasks.

nat-n/poethepoet · 2,066 stars · on GitHub · poethepoet.natn.io

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/nat-n/poethepoet/stop
Clone the repo
git clone --depth 1 https://github.com/nat-n/poethepoet

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 Stop

README.md
[![agentmods](https://agentmods.dev/badge/hooks/nat-n/poethepoet/stop.svg)](https://agentmods.dev/hooks/nat-n/poethepoet/stop)
Your own site
<a href="https://agentmods.dev/hooks/nat-n/poethepoet/stop"><img src="https://agentmods.dev/badge/hooks/nat-n/poethepoet/stop.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

Stop 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 6d 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.

.claude/settings.json · 12 lines

What it actually says

{
  "Stop": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "poe format"
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 2. 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. 6d ago First seen · 12 lines scan A 53477d52ebf1

Subscribe to this mod's changes

Stop is a hook published in the GitHub repository nat-n/poethepoet (2,066 stars, last pushed 1mo 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 2026-08-30.