agentmods.dev

UserPromptSubmit

UserPromptSubmit is a hook for Claude Code from clankercode/claude-inject-idle-time. Its token cost is not measured, scanned A, original, no licence file.

A hook that runs a JavaScript file with Node.js when you submit a prompt, before the coding agent receives it.

In plain words
What is it for?
Use it to run prompt-submission setup or processing through user-prompt-submit.js.
Why use it?
It lets a script perform an automatic action at the start of each prompt submission.

Hook for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the idle-timing plugin — 3 commands, 3 hooks shipped together

One of 3 entries in hooks.json upstream. Installing this one merges just its entry into your config; the other 2 are separate, each on its own page.

not rated 5repo 2mo ago A scan tokens not measured custom licence

Good fit Use it to run prompt-submission setup or processing through user-prompt-submit.js.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/clankercode/claude-inject-idle-time/user-prompt-submit
View source ↗ clankercode/claude-inject-idle-time clankercode.github.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.

Clone the repo
git clone --depth 1 https://github.com/clankercode/claude-inject-idle-time

Made for: Claude Code.

Or install idle-timing, the plugin that ships this one along with the rest of its 3 commands, 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 UserPromptSubmit

README.md
[![agentmods](https://agentmods.dev/badge/hooks/clankercode/claude-inject-idle-time/user-prompt-submit.svg)](https://agentmods.dev/hooks/clankercode/claude-inject-idle-time/user-prompt-submit)
Your own site
<a href="https://agentmods.dev/hooks/clankercode/claude-inject-idle-time/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/clankercode/claude-inject-idle-time/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 unknown No closer match found 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 7d 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 · 13 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 7d ago First seen · 13 lines scan A 364af9ed54b2

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository clankercode/claude-inject-idle-time (5 stars, last pushed 2mo ago), with no licence file. 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.

Claude Codedevtoolshooksjavascriptnodejsplugin
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