Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add wookiya1364/scv-claude-code/plugin install scvWrote 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/wookiya1364/scv-claude-code/pre-tool-use)<a href="https://agentmods.dev/hooks/wookiya1364/scv-claude-code/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/wookiya1364/scv-claude-code/pre-tool-use.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
PreToolUse 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 4d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- UserPromptExpansion — 88% identical, 23 lines differ
What it actually says
{
"PreToolUse": [
{
"matcher": "Skill",
"hooks": [
{
"type": "command",
"command": "SCV_GUARD_MODE=mint SCV_GUARD_SCRIPTS=\"${CLAUDE_PLUGIN_ROOT}/vendor/scv-core/core/scripts\" SCV_GUARD_EXEMPT=\".claude/settings.json:.claude/settings.local.json\" bash \"${CLAUDE_PLUGIN_ROOT}/vendor/scv-core/core/template/hooks/guard.sh\"",
"timeout": 5
}
]
},
{
"matcher": "Bash",
"hooks": [
{
"type": "command",
"command": "SCV_GUARD_MODE=gate-bash SCV_GUARD_SCRIPTS=\"${CLAUDE_PLUGIN_ROOT}/vendor/scv-core/core/scripts\" SCV_GUARD_EXEMPT=\".claude/settings.json:.claude/settings.local.json\" bash \"${CLAUDE_PLUGIN_ROOT}/vendor/scv-core/core/template/hooks/guard.sh\"",
"timeout": 5
}
]
},
{
"matcher": "Write|Edit|MultiEdit|NotebookEdit",
"hooks": [
{
"type": "command",
"command": "SCV_GUARD_MODE=gate-write SCV_GUARD_SCRIPTS=\"${CLAUDE_PLUGIN_ROOT}/vendor/scv-core/core/scripts\" SCV_GUARD_EXEMPT=\".claude/settings.json:.claude/settings.local.json\" bash \"${CLAUDE_PLUGIN_ROOT}/vendor/scv-core/core/template/hooks/guard.sh\"",
"timeout": 5
}
]
}
]
}What else hooks.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.
- 4d ago First seen · 34 lines scan A 6cd52f6a85b7
PreToolUse is a hook published in the GitHub repository wookiya1364/scv-claude-code (7 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. 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 Edit and Write tool calls, running bun run lint. From gmickel/flow-next.
WorktreeCreate
Runs when a git worktree is created, executing worktree-hook.sh. From rhesis-ai/rhesis.
PreCompact
Runs before the context is compacted, executing pre-compact.py via uv with --directory. From geekatron/jerry.
TaskCompleted
Runs when a task is marked completed, executing task-completed-gate.sh. From rmzi/portable-dev-system.
PreToolUse
Runs before the agent uses a tool for Bash tool calls, executing test-before-push.sh. From agent-receipts/openclaw.
PostToolUse
Runs after a tool call finishes for Write and Edit tool calls, executing lint-on-edit.sh. From agent-receipts/openclaw.