PreToolUse

A pre-tool hook that runs checks before selected Git commands, including committing, pushing, merging, and tagging.

In plain words
What is it for?
Use it to guard Git commits, pushes, merges, and tags with the workflow's checks.
Why use it?
It can stop those repository actions when the codex-claude-loop requirements have not been satisfied.

Hook

Part of the codex-claude-loop plugin — 5 skills, 1 hook shipped together

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/ozzaii/codex-claude-loop/pre-tool-use
Clone the repo
git clone --depth 1 https://github.com/ozzaii/codex-claude-loop

Or install codex-claude-loop, the plugin that ships this one along with the rest of its 5 skills, 1 hook.

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 original No closer match found 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 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.

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.

plugin/hooks/hooks.json · 49 lines

What it actually says

{
  "PreToolUse": [
    {
      "matcher": "Bash",
      "hooks": [
        {
          "type": "command",
          "if": "Bash(git commit *)",
          "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/cl-git-guard.sh\"",
          "args": [
            "commit"
          ],
          "timeout": 10,
          "statusMessage": "Checking codex-claude-loop gates"
        },
        {
          "type": "command",
          "if": "Bash(git push *)",
          "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/cl-git-guard.sh\"",
          "args": [
            "push"
          ],
          "timeout": 10,
          "statusMessage": "Checking codex-claude-loop gates"
        },
        {
          "type": "command",
          "if": "Bash(git merge *)",
          "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/cl-git-guard.sh\"",
          "args": [
            "merge"
          ],
          "timeout": 10,
          "statusMessage": "Checking codex-claude-loop gates"
        },
        {
          "type": "command",
          "if": "Bash(git tag *)",
          "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/cl-git-guard.sh\"",
          "args": [
            "tag"
          ],
          "timeout": 10,
          "statusMessage": "Checking codex-claude-loop gates"
        }
      ]
    }
  ]
}
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.

  1. 2d ago First seen · 49 lines scan A 6953c2a6cfeb

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository ozzaii/codex-claude-loop (6 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 A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.