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/arcticfox2029/chamnan/session-endgit clone --depth 1 https://github.com/ArcticFox2029/chamnanGrade A, and why
SessionEnd 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
61% 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
{
"SessionEnd": [
{
"hooks": [
{
"type": "command",
"command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/session_end.py\""
}
]
}
]
}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 · 12 lines scan A c9e3a6d72772
SessionEnd is a hook published in the GitHub repository ArcticFox2029/chamnan (4 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. It is 61% 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 run_command, view_file, grep_search, web_fetch and read_url_content tool calls, running context-mode hook antigravity-cli pretooluse. From mksglu/context-mode.
PostToolUse
Runs after a tool call finishes, running context-mode hook antigravity-cli posttooluse. From mksglu/context-mode.
Stop
Runs when the agent finishes a response, running context-mode hook antigravity-cli stop. From mksglu/context-mode.
PreToolUse
Runs before the agent uses a tool for Bash tool calls, executing validate-bun-command.sh via bash. From secondsky/claude-skills.
PostToolUse
Runs after a tool call finishes for Bash tool calls, executing bun-suggestions.sh via bash. From secondsky/claude-skills.
SessionStart
Runs when a session starts, executing session_setup.py, session_init.py, smart_cleanup.py, session_inventory.py and update_check.py (5 commands). From sheeki03/Few-Word.