diff --git a/Tools/ci/metadata_modules.sh b/Tools/ci/metadata_modules.sh
new file mode 100755
index 0000000000..3b8242f5c4
--- /dev/null
+++ b/Tools/ci/metadata_modules.sh
@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+#
+# metadata_modules.sh — generate and sync PX4 module reference documentation
+#
+# Usage:
+#   Tools/ci/metadata_modules.sh [--test-only] [--debug]
+#
+# Options:
+#   --test-only   Run make target and comparison; exit 1 if diffs found, without copying files
+#   --debug       Show full make output and debug info for file comparisons
+#
+set -euo pipefail
+shopt -s nullglob
+
+# Parse flags
+test_only=false
+debug=false
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --test-only) test_only=true; shift ;;
+    --debug)     debug=true; shift ;;
+    *) echo "Usage: $0 [--test-only] [--debug]"; exit 2 ;;
+  esac
+done
+
+# Paths and make target
+make_target="module_documentation"
+src_dir="build/px4_sitl_default/docs/modules"
+dest_dir="docs/en/modules"
+
+# Run make target
+if [ "$debug" = true ]; then
+  echo "🔧 Running 'make $make_target' (verbose)"
+  make $make_target
+else
+  echo "🔧 Running 'make $make_target'"
+  make $make_target > /dev/null 2>&1
+fi
+
+# Verify build output
+src_files=("$src_dir"/*)
+if [ ${#src_files[@]} -eq 0 ]; then
+  echo "❌ No generated module docs found in $src_dir. Build failed or path wrong."
+  exit 1
+fi
+
+echo "🔍 Checking module reference docs in $dest_dir"
+mkdir -p "$dest_dir"
+
+changed=()
+for src in "${src_files[@]}"; do
+  name=$(basename "$src")
+  dst="$dest_dir/$name"
+
+  if [[ ! -e "$dst" ]]; then
+    [ "$debug" = true ] && echo "DEBUG: missing $dst"
+    changed+=("$name")
+  elif ! cmp -s "$src" "$dst"; then
+    [ "$debug" = true ] && echo "DEBUG: cmp -s '$src' '$dst'; echo \$?"
+    changed+=("$name")
+  fi
+done
+
+if [ ${#changed[@]} -eq 0 ]; then
+  echo "✅ All module reference docs are up to date."
+  exit 0
+fi
+
+echo "⚠️ Detected updates in module docs:"
+for f in "${changed[@]}"; do echo "  - $f"; done
+
+if [ "$test_only" = true ]; then
+  echo "🚨 Module reference docs need updating; rerun without --test-only to apply."
+  exit 1
+fi
+
+echo "📂 Copying updated module docs to $dest_dir"
+for f in "${changed[@]}"; do cp -rv "$src_dir/$f" "$dest_dir/$f"; done
+
+echo "🚨 Module reference docs updated; please commit changes:"
+echo "    git status -s $dest_dir"
+echo "    git add $dest_dir/*"
+echo "    git commit -m 'docs: update module reference metadata'"
+exit 1