Borrowing it
Nothing to install: this file belongs to gaia-react/gaia. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/gaia-react/gaia/main/.claude/settings.jsongit clone --depth 1 https://github.com/gaia-react/gaiaWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/hooks/gaia-react/gaia/session-start)<a href="https://agentmods.dev/hooks/gaia-react/gaia/session-start"><img src="https://agentmods.dev/badge/hooks/gaia-react/gaia/session-start/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/hooks/gaia-react/gaia/session-start"><img src="https://agentmods.dev/badge/hooks/gaia-react/gaia/session-start.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade 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 9d 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.
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.
This is a copy
80% identical to PreCompact — 34 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
{
"SessionStart": [
{
"matcher": "startup|resume",
"hooks": [
{
"type": "command",
"command": "\"$(git rev-parse --show-toplevel 2>/dev/null || printf %s \"${CLAUDE_PROJECT_DIR:-.}\")/.claude/hooks/provision-worktree.sh\""
},
{
"type": "command",
"command": "\"$(git rev-parse --show-toplevel 2>/dev/null || printf %s \"${CLAUDE_PROJECT_DIR:-.}\")/.claude/hooks/wiki-session-start.sh\""
},
{
"type": "command",
"command": "\"$(git rev-parse --show-toplevel 2>/dev/null || printf %s \"${CLAUDE_PROJECT_DIR:-.}\")/.claude/hooks/debt-session-reconcile.sh\""
},
{
"type": "command",
"command": "\"$(git rev-parse --show-toplevel 2>/dev/null || printf %s \"${CLAUDE_PROJECT_DIR:-.}\")/.claude/hooks/usage-capture.sh\""
}
]
},
{
"matcher": "startup|resume|clear|compact",
"hooks": [
{
"type": "command",
"command": "\"$(git rev-parse --show-toplevel 2>/dev/null || printf %s \"${CLAUDE_PROJECT_DIR:-.}\")/.claude/hooks/workflow-doctrine-inject.sh\""
},
{
"type": "command",
"command": "\"$(git rev-parse --show-toplevel 2>/dev/null || printf %s \"${CLAUDE_PROJECT_DIR:-.}\")/.claude/hooks/ports-session-start.sh\""
}
]
}
]
}What else settings.json configures
This page is one entry in a file that holds 7. 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.
- 9d ago Changed · -9 lines ffd1dcde8939
- 13d ago Changed · +4 lines c19cd3b86270
- 14d ago Changed · +9 lines 5ae86e45d333
- 16d ago Changed · -9 lines 4ba3de647c49
- 17d ago Changed · +13 lines 2b9a80babfcf
- 23d ago Changed · -4 lines 6a0cebe64a7d
- 1mo ago Changed · +4 lines b4e3789d914f
- 1mo ago Changed f6d1c8e896b5
- 1mo ago First seen · 30 lines scan A 24b4a1255658
SessionStart is a hook published in the GitHub repository gaia-react/gaia (23 stars, last pushed today), 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. It is 80% identical to PreCompact, differing in 34 lines, and is treated as a copy.
Other hooks, from other repositories
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.
PostToolUse
Runs after a tool call finishes for Bash tool calls, executing hooks.sh via sh (3 commands). From anthropics/claude-plugins-official.
PreCompact
Runs before the context is compacted for manual and auto tool calls, executing hook-handler.cjs via node (4 commands). From ruvnet/RuView.
SessionStart
Runs when a session starts on startup, executing worktree-setup.mjs via bash with --show-toplevel. From openclaw/openclaw.
SessionStart
Runs when a session starts, executing hook-handler.cjs and auto-memory-hook.mjs via node (2 commands). From ruvnet/RuView.