A set of automatic checks that run before the agent writes, edits files, or runs certain shell commands. A hook is an action triggered by one of these events.

Use it to add safety and process checks around file changes and Git operations.

It records tool use, checks changes before editing, and reminds the agent about commits before Git commands.

PreToolUse — Hook by TeamSPWK

Install

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.

agentmods

npx agentmods add hooks/teamspwk/nova/pre-tool-use

Clone the repo

git clone --depth 1 https://github.com/TeamSPWK/nova

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin 53% copy Near-identical to another mod in the catalogue.

Security

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 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.

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.

Origin

This is a copy

53% identical to SessionStart — 27 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.

hooks/hooks.json · 32 lines

What it actually says

{
  "PreToolUse": [
    {
      "matcher": "",
      "hooks": [
        {
          "type": "command",
          "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/pre-tool-use-record.sh\""
        }
      ]
    },
    {
      "matcher": "Write|Edit",
      "hooks": [
        {
          "type": "command",
          "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/pre-edit-check.sh\""
        }
      ]
    },
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "if": "Bash(git *)",
          "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/pre-commit-reminder.sh\""
        }
      ]
    }
  ]
}

Changes

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 · 32 lines scan A d0803da2efc3

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository TeamSPWK/nova (2 stars, last pushed 2d ago), 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 53% identical to SessionStart, differing in 27 lines, and is treated as a copy.

Code review Git and workflow agent-ops ai-agents ai-quality anthropic claude-code claude-code-plugin

PreToolUse

Getting it into your agent

Grade A, and why

Nothing flagged

This is a copy

What it actually says

What this file has done since we first saw it

Other hooks, from other repositories

PreToolUse

PostToolUse

SessionStart

SessionStart

PreToolUse

SessionStart