File size: 855 Bytes
0ae3f27 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | #!/usr/bin/env bash
# Hook: PreToolUse (matcher: Write|Edit)
#
# Blocks writes to MEMORY.md and auto-memory files, redirecting Claude
# to use the mem0 MCP add_memory tool instead.
#
# Input: JSON on stdin with tool_name, tool_input
# Output: stderr message (exit 2 = block)
#
# Exit codes:
# 0 = allow the tool call
# 2 = block the tool call (stderr is shown to Claude as feedback)
set -euo pipefail
INPUT=$(cat)
FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // .tool_input.path // ""' 2>/dev/null || echo "")
if [ -z "$FILE_PATH" ]; then
exit 0
fi
case "$FILE_PATH" in
*/MEMORY.md|*/memory/*.md|*/.claude/*/memory/*)
echo "BLOCKED: Do not write to $FILE_PATH. Use the mem0 MCP \`add_memory\` tool instead to persist memories. This project uses mem0 for all memory storage." >&2
exit 2
;;
*)
exit 0
;;
esac
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