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/thammasok/sample-mcp-and-hook/session-startgit clone --depth 1 https://github.com/Thammasok/sample-mcp-and-hookGrade C, and why
SessionStart scanned grade C with 3 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.
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": "INPUT=$(cat); _m=$(jq -r '.model // empty' .claude/settings.json 2>/dev/null); _m=${_m:-$(jq -r '.model // empty' ~/.claude/settings.json 2>/dev/null)}; _m=${_m:-claude-code}; echo \"$INPUT\" | jq --arg m \"$ Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
"command": "INPUT=$(cat); _m=$(jq -r '.model // empty' .claude/settings.json 2>/dev/null); _m=${_m:-$(jq -r '.model // empty' ~/.claude/settings.json 2>/dev/null)}; _m=${_m:-claude-code}; echo \"$INPUT\" | jq --arg m \"$ Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
"command": "INPUT=$(cat); _m=$(jq -r '.model // empty' .claude/settings.json 2>/dev/null); _m=${_m:-$(jq -r '.model // empty' ~/.claude/settings.json 2>/dev/null)}; _m=${_m:-claude-code}; echo \"$INPUT\" | jq --arg m \"$ 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 else settings.json configures
This page is one entry in a file that holds 4. Installing the file brings all of them; each is measured and scanned on its own page.
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 C 2dfda37e0fa8
SessionStart is a hook published in the GitHub repository Thammasok/sample-mcp-and-hook (0 stars, last pushed 2mo 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 C with 3 findings (sends data to an external url, reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.
Other hooks, from other repositories
PostToolUse
Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.
SessionStart
Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.
SessionStart
Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.
PreToolUse
Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.
PreToolUse
Runs before the agent uses a tool, executing pre-write.sh and pre-bash.sh (2 commands). From anthropics/claude-cookbooks.
SessionStart
Runs when a session starts, executing session-start.sh. From anthropics/claude-cookbooks.