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/sageox/ox/pre-compactgit clone --depth 1 https://github.com/sageox/oxGrade 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 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.
What it actually says
{
"PreCompact": [
{
"hooks": [
{
"command": "if command -v bd >/dev/null 2>&1; then bd prime 2>&1 || true; else echo '{\"sageox\": {\"notice\": \"This repo uses SageOx: install https://github.com/sageox/ox for optimized team context.\"}}'; fi",
"type": "command"
},
{
"command": "if command -v ox >/dev/null 2>&1; then AGENT_ENV=claude-code ox agent hook PreCompact 2>&1 || true; else echo 'This repo uses SageOx: install https://github.com/sageox/ox for optimized team context.'; fi",
"type": "command"
}
],
"matcher": ""
}
]
}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 · 17 lines scan A 40c35f584079
PreCompact is a hook published in the GitHub repository sageox/ox (50 stars, last pushed 3d 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
PostToolUse
Runs after a tool call finishes for Write and Edit tool calls, executing validate-write.ts via node with --disable-warning and --experimental-strip-types. From breferrari/obsidian-mind.
SessionStart
Runs when a session starts, executing session-start.js via node. From Codename-11/SubFrame.
PreToolUse
Runs before the agent uses a tool for ^Bash$ tool calls, executing codex-rtk-hook.mjs via node. From HECer/yoke.
SessionStart
Runs when a session starts on startup, resume, clear and compact, executing wisci.py via python3 (2 commands). From ph3on1x/wisci.
PreCompact
Runs before the context is compacted for auto and manual tool calls, running echo 'Preserve verbatim in the summary: file paths, decision. From ph3on1x/wisci.
SessionStart
Runs when a session starts on startup, clear and compact, executing run-hook.cmd. From Leodorareluctant259/superpowers-zh.