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/scarce/axel/session-startgit clone --depth 1 https://github.com/scarce/axelGrade B, and why
SessionStart scanned grade B with 2 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
"command": "curl -s -X POST -H 'Content-Type: application/json' -d @- http://localhost:4318/events/shell-13171", Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
"command": "curl -s -X POST -H 'Content-Type: application/json' -d @- http://localhost:4318/events/shell-13171", 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 · 14 lines scan B b2fef5808681
SessionStart is a hook published in the GitHub repository scarce/axel (207 stars, last pushed 4mo 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 B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other hooks, from other repositories
SessionEnd
Runs when a session ends, running claude-tmux-cleanup. From nicknisi/dotfiles.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing share_hook.py via bash. From pchalasani/claude-code-tools.
Stop
Runs when the agent finishes a response, executing stop_report_hook.sh, tmux_signal_stop_receipt.sh and session_stop_rotation.py via bash with --show-toplevel (3 commands). From Vinix24/vnx-orchestration.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing tmux_signal_prompt_received.sh via bash with --show-toplevel. From Vinix24/vnx-orchestration.
PostToolUse
Runs after a tool call finishes for Edit and Write tool calls, running an inline shell check. From dewil/claude-control.
PostToolUse
Runs after a tool call finishes for Edit, Write, MultiEdit and Bash tool calls, executing check-and-commit.sh and auto-deploy.sh (2 commands). From mixpeek/amux.