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/nhevers/moltbrain/session-startgit clone --depth 1 https://github.com/nhevers/MoltBrainGrade 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 29 lines scan A fd6d9f992854
SessionStart is a hook published in the GitHub repository nhevers/MoltBrain (253 stars, last pushed 5mo ago), with no licence file. 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
PreToolUse
Runs before the agent uses a tool for Write and Edit tool calls, executing file_naming_validator.ts and backlog_validator.ts (2 commands). From CRJFisher/ariadne.
PostCompact
Runs after the context is compacted, executing post-compaction.sh. From susomejias/rembric.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, running an inline shell check. From susomejias/rembric.
PreToolUse
Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From safe-global/safe-client-gateway.
PreCompact
Runs before the context is compacted, executing pre-compact.sh. From susomejias/rembric.
SessionStart
Runs when a session starts, executing session-start.mjs via node. From letsgojh0810/hud-plugin.