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/jimmynycu/token-efficiency/session-endgit clone --depth 1 https://github.com/Jimmynycu/token-efficiencyGrade 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": "${CLAUDE_PLUGIN_ROOT}/scripts/session_end_coach.sh",
"timeout": 20
}
]
}
]
}What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 13 lines scan A fe7c0ec97a7a
SessionEnd is a hook published in the GitHub repository Jimmynycu/token-efficiency (2 stars, last pushed 2mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other hooks, from other repositories
SessionStart
Runs when a session starts on startup, resume, clear and compact, executing session-start.mjs via node. From XTSoftwareLabs/neatcontext-plugins.
Stop
Runs when the agent finishes a response, executing stale-ledger.sh via bash. From longthread/claude-plugins.
SessionStart
Runs when a session starts, executing qector_session_start.py. From GuillaumeLessard/qector-claude-plugin.
PostToolUse
Runs after a tool call finishes for ^mcp__plugin_qector_qector-(library, research and admin)__.*$ tool calls, executing qector_tool_log.py. From GuillaumeLessard/qector-claude-plugin.
PreCompact
Runs before the context is compacted, executing pre-compact.sh via bash. From longthread/claude-plugins.
SessionStart
Runs when a session starts on startup, resume, clear and compact, executing session-start.sh via bash. From longthread/claude-plugins.