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.
npx agentmods add hooks/ezbuilder/code-brain/user-prompt-submitgit clone --depth 1 https://github.com/ezBuilder/code-brainGrade 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 yesterday.
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.
This is a copy
64% 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.
What it actually says
{
"UserPromptSubmit": [
{
"hooks": [
{
"type": "command",
"command": "./.claude/hooks/user-prompt-submit.sh",
"timeout": 2
}
]
}
]
}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.
- yesterday First seen · 13 lines scan A 4180c930b103
UserPromptSubmit is a hook published in the GitHub repository ezBuilder/code-brain (11 stars, last pushed 2d ago), licensed Apache-2.0. 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. It is 64% identical to SessionStart, differing in 8 lines, and is treated as a copy.
Other hooks, from other repositories
SessionStart
Runs when a session starts on startup, resume, clear and compact, running vectr hook session-start. From swapnanil/vectr.
PreToolUse
Runs before the agent uses a tool for Edit, Write and MultiEdit tool calls, executing guard-shell-docs.sh. From vima-tech/Innate.
SessionEnd
Runs when a session ends, executing session-end.sh via bash. From awrshift/agent-memory-kit.
PreCompact
Runs before the context is compacted, executing pre-compact.sh via bash. From awrshift/agent-memory-kit.
SessionStart
Runs when a session starts on startup, clear, resume, compact and fork, executing session-start.py via python3. From awrshift/agent-memory-kit.
PreToolUse
Runs before the agent uses a tool for Edit and Write tool calls, executing protect-tests.py via python3. From awrshift/agent-memory-kit.