UserPromptSubmit

UserPromptSubmit is a hook for Claude Code from irmowan/claude-code-prompt-recorder. Its token cost is not measured, scanned A, original, MIT.

A hook that runs when a user submits a prompt, before the coding agent receives it. It records the prompt by running a Python script.

In plain words
What is it for?
Use it when prompts need to be captured automatically before they are processed.
Why use it?
It creates a record of submitted requests, which can help with auditing or reviewing how the agent was used.

Hook for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the prompt-recorder plugin — 1 hook shipped together

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add irmowan/claude-code-prompt-recorder
Claude Code
/plugin install prompt-recorder

Made for: Claude Code.

Or install prompt-recorder, the plugin that ships this one along with the rest of its 1 hook.

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/irmowan/claude-code-prompt-recorder/user-prompt-submit.svg)](https://agentmods.dev/hooks/irmowan/claude-code-prompt-recorder/user-prompt-submit)
Your own site
<a href="https://agentmods.dev/hooks/irmowan/claude-code-prompt-recorder/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/irmowan/claude-code-prompt-recorder/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 original 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 5d 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 · 16 lines

What it actually says

{
  "UserPromptSubmit": [
    {
      "description": "Record all user prompts",
      "hooks": [
        {
          "type": "command",
          "command": "python ${CLAUDE_PLUGIN_ROOT}/scripts/record-prompt.py",
          "description": "Run the record prompt script",
          "async": true,
          "timeout": 10
        }
      ]
    }
  ]
}
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. 5d ago First seen · 16 lines scan A 23b5a17c378d

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository irmowan/claude-code-prompt-recorder (2 stars, last pushed 6mo 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 2026-08-31.