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/ariaxhan/kernel-claude/pre-compactgit clone --depth 1 https://github.com/ariaxhan/kernel-claudeGrade A, and why
PreCompact 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.
What it actually says
{
"PreCompact": [
{
"matcher": "",
"hooks": [
{
"type": "command",
"command": "${CLAUDE_PLUGIN_ROOT}/hooks/scripts/pre-compact-commit.sh",
"timeout": 30,
"statusMessage": "Saving context snapshot..."
}
]
}
]
}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.
- 2d ago First seen · 15 lines scan A 6ea686626491
PreCompact is a hook published in the GitHub repository ariaxhan/kernel-claude (12 stars, last pushed 2d 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 2026-08-30.
Other hooks, from other repositories
Stop
Runs when the agent finishes a response, executing collect.ts with --no-audit, --no-fund and --silent. From vukkt/token-warden.
SessionStart
Runs when a session starts on startup and resume, executing notify.ts. From vukkt/token-warden.
SubagentStop
Runs when a subagent finishes, executing collect.ts. From vukkt/token-warden.
PreToolUse
Runs before the agent uses a tool for Skill, Read, Write, Edit, MultiEdit and NotebookEdit tool calls, running an inline shell check (2 commands). From tigerless-labs/autoharness.
SessionStart
Runs when a session starts on startup, resume and compact, executing session-start.sh via bash (3 commands). From JKHeadley/instar.
StopFailure
Runs on the StopFailure event, executing cc10x_event_logger.py via python3. From romiluz13/cc10x.