claude-code-infrastructure-showcase: Hook for Claude Code

.claude/settings.json

UserPromptSubmit is a hook for Claude Code from diet103/claude-code-infrastructure-showcase. Its token cost is not measured, scanned A, a copy of SessionStart, MIT.

A prompt-submission hook that runs a shell script after you send a prompt but before the coding agent processes it.

In plain words
What is it for?
It is for running skill-activation-prompt.sh with a 15-second limit. The input does not explain how the script activates skills.
Why use it?
It can perform the project’s prompt-time setup automatically, so the agent receives the prompt after that preparation is complete.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is diet103/claude-code-infrastructure-showcase's own configuration. It tells Claude Code how to work on claude-code-infrastructure-showcase 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-infrastructure-showcase configures →

One of 5 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 4 are separate, each on its own page.

About the project

Claude Code Infrastructure Showcase is a reference library of configuration patterns for Claude Code, including skills, hooks, agents, and commands that shape how the coding agent works. It helps developers organize and automate Claude Code in their own projects, especially larger TypeScript codebases. The catalogue entries are examples of infrastructure that users can copy into their projects.

diet103/claude-code-infrastructure-showcase · 10,037 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to diet103/claude-code-infrastructure-showcase. 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/diet103/claude-code-infrastructure-showcase/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/diet103/claude-code-infrastructure-showcase

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/diet103/claude-code-infrastructure-showcase/user-prompt-submit/github.svg)](https://agentmods.dev/hooks/diet103/claude-code-infrastructure-showcase/user-prompt-submit)
Your own site
<a href="https://agentmods.dev/hooks/diet103/claude-code-infrastructure-showcase/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/diet103/claude-code-infrastructure-showcase/user-prompt-submit/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for UserPromptSubmit

Your own site · 80×15
<a href="https://agentmods.dev/hooks/diet103/claude-code-infrastructure-showcase/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/diet103/claude-code-infrastructure-showcase/user-prompt-submit.svg" alt="Reviewed on agentmods" width="80" 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 55% 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 1mo 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

55% identical to SessionStart — 8 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

{
  "UserPromptSubmit": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "$CLAUDE_PROJECT_DIR/.claude/hooks/skill-activation-prompt.sh",
          "timeout": 15
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 5. 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. 1mo ago First seen · 13 lines scan A 181a7adcef03

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository diet103/claude-code-infrastructure-showcase (10,037 stars, last pushed 3mo 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 55% identical to SessionStart, differing in 8 lines, and is treated as a copy.