agentmods.dev

bike_index: Hook for Claude Code

.claude/settings.json

PreToolUse is a hook for Claude Code from bikeindex/bike_index. Its token cost is not measured, scanned A, original, AGPL-3.0.

A hook that runs a shell check before the agent edits files, writes files, or changes notebooks. A hook is an automatic action tied to a specific agent event.

In plain words
What is it for?
Use it before Edit, Write, and NotebookEdit operations. The available description does not say what the check itself verifies.
Why use it?
It can check or block changes before they are made, though the input does not specify what check it runs.

Hook for Claude Code

Written for Claude Code: installed under .claude/.

This is bikeindex/bike_index's own configuration. It tells Claude Code how to work on bike_index itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything bike_index configures →

One of 4 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 3 are separate, each on its own page.

not rated 308repo changed 22d ago A scan tokens not measured AGPL-3.0
View source ↗ bikeindex/bike_index bikeindex.org
Reuse

Borrowing it

Nothing to install: this file belongs to bikeindex/bike_index. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/bikeindex/bike_index/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/bikeindex/bike_index

Made for: Claude Code.

Wrote 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.

agentmods badge for PreToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/bikeindex/bike_index/pre-tool-use/github.svg)](https://agentmods.dev/hooks/bikeindex/bike_index/pre-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/bikeindex/bike_index/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/bikeindex/bike_index/pre-tool-use/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.

agentmods 80×15 button for PreToolUse

Your own site · 80×15
<a href="https://agentmods.dev/hooks/bikeindex/bike_index/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/bikeindex/bike_index/pre-tool-use.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
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. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 22d 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.

.claude/settings.json · 24 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Same file

What else settings.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.

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. 22d ago Changed 5a81f362791b
  2. 1mo ago Changed · +10 lines 64a259988425
  3. 1mo ago First seen · 14 lines scan A b90059f3b77d

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository bikeindex/bike_index (308 stars, last pushed today), licensed AGPL-3.0. 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 2026-09-22.

Building agents
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.

supabase/supabase · not measured

PostToolUse

Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.

supabase/supabase · not measured

SessionStart

Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.

google-gemini/gemini-cli · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.

apache/superset · not measured

PreToolUse

Runs before the agent uses a tool, executing pre-write.sh and pre-bash.sh (2 commands). From anthropics/claude-cookbooks.

anthropics/claude-cookbooks · not measured

PostToolUse

Runs after a tool call finishes for Bash tool calls, executing hooks.sh via sh (3 commands). From anthropics/claude-plugins-official.

anthropics/claude-plugins-official · not measured