claude-code-best-practice-zh: Hook for Claude Code

.claude/settings.json

UserPromptSubmit is a hook for Claude Code from BuaaJoseph/claude-code-best-practice-zh. Its token cost is not measured, scanned A, a copy of PreToolUse, MIT.

A hook that runs a Python script whenever a user submits a prompt, before the coding agent processes it.

In plain words
What is it for?
Use it to trigger the project's hooks.py script on prompt submission, with asynchronous execution and a five-second timeout.
Why use it?
It allows project-specific automation or checks to happen automatically at the start of each request.

Hook for Claude Code

Written for Claude Code: ${CLAUDE_PROJECT_DIR} variable.

This is BuaaJoseph/claude-code-best-practice-zh's own configuration. It tells Claude Code how to work on claude-code-best-practice-zh 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-code-best-practice-zh configures →

One of 23 entries in settings.json — they are configured in one file and arrive together.

Reuse

Borrowing it

Nothing to install: this file belongs to BuaaJoseph/claude-code-best-practice-zh. 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/BuaaJoseph/claude-code-best-practice-zh/master/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/BuaaJoseph/claude-code-best-practice-zh

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 UserPromptSubmit

README.md
[![agentmods](https://agentmods.dev/badge/hooks/buaajoseph/claude-code-best-practice-zh/user-prompt-submit.svg)](https://agentmods.dev/hooks/buaajoseph/claude-code-best-practice-zh/user-prompt-submit)
Your own site
<a href="https://agentmods.dev/hooks/buaajoseph/claude-code-best-practice-zh/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/buaajoseph/claude-code-best-practice-zh/user-prompt-submit.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 83% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

UserPromptSubmit 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.

Origin

This is a copy

83% identical to PreToolUse — 4 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 · 15 lines

What it actually says

{
  "UserPromptSubmit": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "python3 ${CLAUDE_PROJECT_DIR}/.claude/hooks/scripts/hooks.py",
          "timeout": 5000,
          "async": true,
          "statusMessage": "UserPromptSubmit"
        }
      ]
    }
  ]
}
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 · 15 lines scan A ab68a55d0c6c

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository BuaaJoseph/claude-code-best-practice-zh (2 stars, last pushed 4mo 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 83% identical to PreToolUse, differing in 4 lines, and is treated as a copy.