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/blasrodri/truth/session-startgit clone --depth 1 https://github.com/blasrodri/truthGrade C, and why
SessionStart scanned grade C 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
"command": "command -v truth >/dev/null 2>&1 || echo 'truth plugin: the truth binary is not installed, so agent turns are NOT being fact-checked. Install it with: curl -fsSL https://raw.githubusercontent.com/blasrodri/tr Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
"command": "command -v truth >/dev/null 2>&1 || echo 'truth plugin: the truth binary is not installed, so agent turns are NOT being fact-checked. Install it with: curl -fsSL https://raw.githubusercontent.com/blasrodri/tr What it actually says
{
"SessionStart": [
{
"hooks": [
{
"type": "command",
"command": "command -v truth >/dev/null 2>&1 || echo 'truth plugin: the truth binary is not installed, so agent turns are NOT being fact-checked. Install it with: curl -fsSL https://raw.githubusercontent.com/blasrodri/truth/main/install.sh | sh'"
}
]
}
]
}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 · 12 lines scan C 775365b63dcb
SessionStart is a hook published in the GitHub repository blasrodri/truth (1 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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 on startup, executing install_pkgs.sh. From supabase/supabase.
SessionStart
Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.
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.
SessionStart
Runs when a session starts on startup, clear and compact, executing run-hook.cmd. From obra/superpowers.