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/mbanderas/maestro/subagent-stopgit clone --depth 1 https://github.com/mbanderas/maestroGrade A, and why
SubagentStop 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.
This is a copy
61% identical to SessionStart — 8 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
{
"SubagentStop": [
{
"matcher": "",
"hooks": [
{
"type": "command",
"command": "node \"${CLAUDE_PLUGIN_ROOT}/hooks/maestro-subagent-guard.cjs\""
}
]
}
]
}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 741fd7b1c898
SubagentStop is a hook published in the GitHub repository mbanderas/maestro (5 stars, last pushed 5d 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 8 lines, and is treated as a copy.
Other hooks, from other repositories
PreToolUse
Runs before the agent uses a tool for ^(mcp__plugin_context-mode_context-mode__ctx_(batch_execute, execute, execute_file, search), mcp__context-mode__ctx_(batch_execute, execute, execute_file, search), mcp__plugin_cursor-bridge_cursor-bridge__cursor_(context_engine, search, search_deep)…
SubagentStart
Runs when a subagent starts, running observer hook claude-code subagent-start. From superbasedapp/observer.
SubagentStop
Runs when a subagent finishes, running observer hook claude-code subagent-stop. From superbasedapp/observer.
SubagentStart
Runs when a subagent starts, executing plan-context.sh. From bunhine0452/Ocul-PM.
SubagentStop
Runs when a subagent finishes, executing dispatch.js with --platform, --event and --native-event. From event4u-app/agent-config.
PostToolUse
Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.