feat(mem0-plugin): improve auto-triggering — pre-fetch, dedup, skill enforcement v0.2.3 (#5237)

mem0-plugin/scripts/on_file_read.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Hook: PreToolUse (matcher: Read)
+#
+# When Claude reads a file, searches mem0 for memories tagged with that
+# file path. Injects results as additionalContext if found.
+
+set -uo pipefail
+
+INPUT=$(cat)
+
+FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // ""' 2>/dev/null || echo "")
+
+if [ -z "$FILE_PATH" ]; then
+  exit 0
+fi
+
+# Skip non-code files (images, binaries, lockfiles, etc.)
+case "$FILE_PATH" in
+  *.png|*.jpg|*.jpeg|*.gif|*.svg|*.ico|*.woff|*.woff2|*.ttf|*.eot) exit 0 ;;
+  *.lock|*.sum|*.min.js|*.min.css|*.map) exit 0 ;;
+  *node_modules/*|*.git/*|*__pycache__/*) exit 0 ;;
+esac
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+. "$SCRIPT_DIR/_identity.sh" 2>/dev/null || true
+
+# Skip if no API key (checked after _identity.sh resolves CLAUDE_PLUGIN_OPTION_MEM0_API_KEY)
+if [ -z "${MEM0_API_KEY:-}" ]; then
+  exit 0
+fi
+
+# Skip repeated reads: track last 10 files in a temp file.
+# Use full FILE_PATH (not basename) to avoid false dedup.
+RECENT_FILE="/tmp/mem0_recent_reads_${USER}"
+if [ -f "$RECENT_FILE" ] && grep -qxF "$FILE_PATH" "$RECENT_FILE" 2>/dev/null; then
+  exit 0
+fi
+echo "$FILE_PATH" >> "$RECENT_FILE" 2>/dev/null || true
+tail -10 "$RECENT_FILE" > "$RECENT_FILE.tmp" 2>/dev/null && mv "$RECENT_FILE.tmp" "$RECENT_FILE" 2>/dev/null || true
+
+USER_ID="${MEM0_RESOLVED_USER_ID:-${USER:-default}}"
+PROJECT_ID="${MEM0_PROJECT_ID:-unknown}"
+BASENAME=$(basename "$FILE_PATH")
+
+# SECURITY: pass data via env vars, never interpolate into python3 -c
+CONTEXT=$(PYTHONPATH="$SCRIPT_DIR" MEM0_SEARCH_USER="$USER_ID" MEM0_SEARCH_PROJECT="$PROJECT_ID" MEM0_SEARCH_QUERY="$BASENAME" python3 -c "
+import os, sys
+sys.path.insert(0, os.environ.get('PYTHONPATH', '.'))
+from _search import search_memories, format_results_for_context
+
+api_key = os.environ.get('MEM0_API_KEY', '')
+user_id = os.environ.get('MEM0_SEARCH_USER', 'default')
+project_id = os.environ.get('MEM0_SEARCH_PROJECT', 'unknown')
+filename = os.environ.get('MEM0_SEARCH_QUERY', '')
+
+results = search_memories(api_key, user_id, project_id, filename, top_k=3)
+if results:
+    print(format_results_for_context(results, heading=f'mem0 context for {filename}'))
+" 2>/dev/null || true)
+
+if [ -n "$CONTEXT" ]; then
+  jq -nc --arg ctx "$CONTEXT" '{hookSpecificOutput:{hookEventName:"PreToolUse",additionalContext:$ctx}}'
+fi
+
+exit 0