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/yukakust/joinmultiplayer.ai/session-endgit clone --depth 1 https://github.com/yukakust/joinmultiplayer.aiGrade 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 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
{
"SessionEnd": [
{
"hooks": [
{
"type": "command",
"command": "python3 \"$PLUGIN_ROOT/scripts/journal_hook.py\"",
"timeout": 3
}
]
}
]
}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 · 13 lines scan A 844c455d06c3
SessionEnd is a hook published in the GitHub repository yukakust/joinmultiplayer.ai (0 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 2026-08-31.
Other hooks, from other repositories
TaskCompleted
Runs when a task is marked completed, executing on-task-completed.sh. From Chorus-AIDLC/Chorus.
PreToolUse
Runs before the agent uses a tool for Bash tool calls, executing reviewer_bash_filter.py via python3. From JairoTorregrosa/jaiskills.
Stop
Runs when the agent finishes a response, executing dag-tripwire.py and ledger-tripwire.py via python3 (2 commands). From Buckeyes22/subagent-model-routing.
PreCompact
Runs before the context is compacted, running swarm claude pre-compact. From joelhooks/swarm-tools.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing pane-title.sh and workspace-status.sh via bash (2 commands). From virgil-king/kbtz.
SessionStart
Runs when a session starts on startup, resume, clear, compact, startup and resume, executing run_in_plugin_root_with_user_path.sh with --no-project, --reap and --quiet (3 commands). From sdewell/code-quorum.