UserPromptSubmit

A set of hooks that run whenever you submit a prompt to Claude Code, a terminal-based coding assistant. They load saved conversation and keyword-based memory using several search scripts.

In plain words
What is it for?
Use them to trigger global chat-memory loading, BM25 search, and memory retrieval based on words in the prompt.
Why use it?
They bring relevant earlier conversation and project information into the current request, reducing repeated explanations across sessions.

Hook

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.

agentmods
npx agentmods add hooks/pluto2060/ctx/user-prompt-submit
Clone the repo
git clone --depth 1 https://github.com/pluto2060/CTX
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 2d 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.

plugin/hooks/hooks.json · 20 lines

What it actually says

{
  "UserPromptSubmit": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "CHAT_MEMORY_SCOPE=global python3 \"$HOME/.claude/hooks/chat-memory.py\""
        },
        {
          "type": "command",
          "command": "python3 \"$HOME/.claude/hooks/bm25-memory.py\" --rich"
        },
        {
          "type": "command",
          "command": "python3 \"$HOME/.claude/hooks/memory-keyword-trigger.py\""
        }
      ]
    }
  ]
}
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. 2d ago First seen · 20 lines scan A a55c26498d2a

Subscribe to this mod's changes

UserPromptSubmit is a hook published in the GitHub repository pluto2060/CTX (9 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.