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/agenticnotetaking/arscontexta/session-startgit clone --depth 1 https://github.com/agenticnotetaking/arscontextaGrade A, and why
SessionStart 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.
What it actually says
{
"SessionStart": [
{
"hooks": [
{
"type": "command",
"command": "${CLAUDE_PLUGIN_ROOT}/hooks/scripts/session-orient.sh",
"timeout": 10
}
]
}
]
}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 · 13 lines scan A 074133e03a5b
SessionStart is a hook published in the GitHub repository agenticnotetaking/arscontexta (3,483 stars, last pushed 6mo 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 2026-08-30.
Other hooks, from other repositories
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing user_prompt.js via node. From remember-md/remember.
PreCompact
Runs before the context is compacted, running an inline shell check. From vikasgrac/project-brain.
PostToolUse
Runs after a tool call finishes for Write, Edit and MultiEdit tool calls, executing validate-raw-source.sh and qmd-reindex.sh (2 commands). From johnfkoo951/cmds-llm-wiki.
SessionStart
Runs when a session starts on startup and resume, running an inline shell check (2 commands). From sublimecoder/aios.
SessionStart
Runs when a session starts on compact and resume, executing exomem-continuation-checkpoint.sh via bash. From Artexis10/exomem.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing exomem-retrieve-nudge.sh via bash. From Artexis10/exomem.