UserPromptSubmit

UserPromptSubmit is a hook for coding agents from Chorus-AIDLC/Chorus. Its token cost is not measured, scanned A, original, AGPL-3.0.

A hook that runs a shell script after you submit a prompt and before the coding agent receives it.

In plain words
What is it for?
Use it for whatever tasks are written in on-user-prompt.sh.
Why use it?
It lets a project perform a defined preparation or logging step for every submitted prompt.

Hook

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 chorus plugin — 3 agents, 9 hooks, 1 MCP server shipped together

One of 9 entries in hooks.json — they are configured in one file and arrive together.

About the project

Chorus is a coordination harness for teams of coding agents and humans, combining agent orchestration, task tracking, permissions, observability, and recovery in one workflow. It is for collaborative software development where agents propose changes and people verify them before delivery, and the catalogue entries provide its skills, hooks, agents, commands, MCP integration, plugin, and configuration.

Chorus-AIDLC/Chorus · 1,157 stars · on GitHub

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 Chorus-AIDLC/Chorus
Claude Code
/plugin install chorus

Or install chorus, the plugin that ships this one along with the rest of its 3 agents, 9 hooks, 1 MCP server.

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/chorus-aidlc/chorus/user-prompt-submit.svg)](https://agentmods.dev/hooks/chorus-aidlc/chorus/user-prompt-submit)
Your own site
<a href="https://agentmods.dev/hooks/chorus-aidlc/chorus/user-prompt-submit"><img src="https://agentmods.dev/badge/hooks/chorus-aidlc/chorus/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 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 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.

public/chorus-plugin/hooks/hooks.json · 12 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 12 lines scan A 4bc1891a8c78

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository Chorus-AIDLC/Chorus (1,157 stars, last pushed yesterday), licensed AGPL-3.0. 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 2026-08-30.