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/robertsfeir/atelier-pipeline/post-compactgit clone --depth 1 https://github.com/robertsfeir/atelier-pipelineWrote 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.
[](https://agentmods.dev/hooks/robertsfeir/atelier-pipeline/post-compact)<a href="https://agentmods.dev/hooks/robertsfeir/atelier-pipeline/post-compact"><img src="https://agentmods.dev/badge/hooks/robertsfeir/atelier-pipeline/post-compact.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
PostCompact 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 6d 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.
This is a copy
48% identical to SessionStart — 7 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
{
"PostCompact": [
{
"hooks": [
{
"type": "command",
"command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/post-compact-reinject.sh"
}
]
}
]
}What else settings.json configures
This page is one entry in a file that holds 9. Installing the file brings all of them; each is measured and scanned on its own page.
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.
- 6d ago First seen · 12 lines scan A 8eeebce0704c
PostCompact is a hook published in the GitHub repository robertsfeir/atelier-pipeline (25 stars, last pushed 2mo 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 48% identical to SessionStart, differing in 7 lines, and is treated as a copy.
Other hooks, from other repositories
PreToolUse
Runs before the agent uses a tool for Edit, Write, NotebookEdit, Edit, Write, Bash, Agent, Skill, NotebookEdit, SendMessage and TaskUpdate tool calls, running an inline shell check (4 commands). From justinjdev/fellowship.
PreToolUse
Runs before the agent uses a tool for Bash, Write, Edit, MultiEdit and Agent tool calls, executing pre-tool-guard.sh, local-mode-tracking-guard.sh, task-state-guard.sh, lean-comments-guard.sh, parallel-rework-guard.sh, parallel-dispatch-guard.sh and in-flight-marker.sh (7 commands). From OrodruinLabs/nazgul.
SessionEnd
Runs when a session ends, executing session-staging.sh. From OrodruinLabs/nazgul.
TaskCompleted
Runs when a task is marked completed, executing task-completed.sh. From OrodruinLabs/nazgul.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing prompt-guard.sh. From OrodruinLabs/nazgul.
SessionStart
Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.