UserPromptSubmit

UserPromptSubmit is a hook for Claude Code from Naituw/AskHuman. Its token cost is not measured, scanned A, a copy of SessionStart, MIT.

A hook that runs a command before the coding agent receives each submitted prompt. Its example runs a Node.js logging script.

In plain words
What is it for?
Use it to attach pre-prompt logging or other command-line preparation steps to the agent's UserPromptSubmit event.
Why use it?
It can record prompt-submission events before processing begins, which is useful when tracing an agent's lifecycle.

Hook for Claude Code

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else.

One of 11 entries in settings.json — they are configured in one file and arrive together.

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

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/naituw/askhuman/user-prompt-submit.svg)](https://agentmods.dev/hooks/naituw/askhuman/user-prompt-submit)
Your own site
<a href="https://agentmods.dev/hooks/naituw/askhuman/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/naituw/askhuman/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. Scan, not verified.
Origin 95% 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 4d 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

95% identical to SessionStart — 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.

demo/agent-lifecycle/agents/claude/.claude/settings.json · 12 lines

What it actually says

{
  "UserPromptSubmit": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "/opt/homebrew/bin/node \"/Users/wutian/Developer/HumanInLoop/demo/agent-lifecycle/harness/hooklog.cjs\" claude 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. 4d ago First seen · 12 lines scan A e96031cc849e

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository Naituw/AskHuman (140 stars, last pushed 14d 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 95% identical to SessionStart, differing in 4 lines, and is treated as a copy.