claude-multi-agent-architecture: Hook for Claude Code

.claude/settings.json

PostToolUse is a hook for Claude Code from mnzralee/claude-multi-agent-architecture. Its token cost is not measured, scanned A, a copy of PreToolUse, MIT.

An after-edit hook that runs a Python formatting script after a coding agent uses Write or Edit tools. A hook is an automatic action triggered by a particular event.

In plain words
What is it for?
Use it to run auto-format.py after write and edit operations in a Claude project.
Why use it?
It helps apply the project's formatting step immediately after files are changed, reducing manual cleanup.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is mnzralee/claude-multi-agent-architecture's own configuration. It tells Claude Code how to work on claude-multi-agent-architecture itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-multi-agent-architecture configures →

Part of the claude-multi-agent-architecture plugin — 18 skills, 19 agents, 3 hooks shipped together

One of 4 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 3 are separate, each on its own page.

Reuse

Borrowing it

Nothing to install: this file belongs to mnzralee/claude-multi-agent-architecture. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/mnzralee/claude-multi-agent-architecture/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/mnzralee/claude-multi-agent-architecture

Made for: Claude Code.

Or install claude-multi-agent-architecture, the plugin that ships this one along with the rest of its 18 skills, 19 agents, 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 PostToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/mnzralee/claude-multi-agent-architecture/post-tool-use.svg)](https://agentmods.dev/hooks/mnzralee/claude-multi-agent-architecture/post-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/mnzralee/claude-multi-agent-architecture/post-tool-use"><img src="https://agentmods.dev/badge/hooks/mnzralee/claude-multi-agent-architecture/post-tool-use.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. A grade says what 26 rules found in the file — not that it is safe.
Origin 86% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

PostToolUse 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 8d 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.

Origin

This is a copy

86% identical to PreToolUse — 187 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.

.claude/settings.json · 13 lines

What it actually says

{
  "PostToolUse": [
    {
      "matcher": "Write|Edit",
      "hooks": [
        {
          "type": "command",
          "command": "python \"$CLAUDE_PROJECT_DIR/.claude/hooks/auto-format.py\""
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 4. 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. 8d ago First seen · 13 lines scan A dbce6dd5d11a

Subscribe to this mod's changes

PostToolUse is a hook published in the GitHub repository mnzralee/claude-multi-agent-architecture (5 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. It is 86% identical to PreToolUse, differing in 187 lines, and is treated as a copy.