bash.d/.claude/hooks/block-credential-edit.sh

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#!/bin/bash
# PreToolUse hook: block direct edits to credential files.
# Only .example templates should be modified — real secrets stay untouched.
set -euo pipefail
input=$(cat)
file_path=$(echo "$input" | jq -r '.tool_input.file_path // empty')
# No file path in input (e.g. Bash tool) — allow
[[ -z "$file_path" ]] && exit 0
basename=$(basename "$file_path")
# Block known credential files (but allow .example templates)
case "$basename" in
99-claude|99-gemini|99-google|99-huggingface|99-replicate)
echo "Blocked: do not edit credential files directly — edit the .example template instead" >&2
exit 2
;;
esac
exit 0