diff --git a/install.sh b/install.sh
index dd2d83a..40509ff 100755
--- a/install.sh
+++ b/install.sh
@@ -81,6 +81,101 @@ prompt() {
 	printf "%s" "$answer"
 }
 
+tty_prompt_available() {
+	[ -t 2 ] && [ -r /dev/tty ] && [ -w /dev/tty ]
+}
+
+menu_select() {
+	local title="$1"
+	shift
+	local options=("$@")
+	local count="${#options[@]}"
+	local index=0
+	local key=""
+	local i=0
+	local rows=$((count + 3))
+	local rendered=0
+
+	if [ "$count" -eq 0 ]; then
+		return 1
+	fi
+
+	if ! tty_prompt_available; then
+		ui_title "$title"
+		i=0
+		while [ "$i" -lt "$count" ]; do
+			printf "  %d) %s\n" "$((i + 1))" "${options[$i]}" >&2
+			i=$((i + 1))
+		done
+
+		while true; do
+			local raw_choice
+			raw_choice="$(prompt "Choix" "1")"
+			case "$raw_choice" in
+				''|*[!0-9]*)
+					ui_warn "Choix invalide: $raw_choice"
+					;;
+				*)
+					if [ "$raw_choice" -ge 1 ] && [ "$raw_choice" -le "$count" ]; then
+						printf "%s" "${options[$((raw_choice - 1))]}"
+						return 0
+					fi
+					ui_warn "Choix invalide: $raw_choice"
+					;;
+			esac
+		done
+	fi
+
+	while true; do
+		if [ "$rendered" -eq 1 ]; then
+			printf "\033[%dA\033[J" "$rows" >&2 2>/dev/null || true
+		fi
+		ui_title "$title"
+		i=0
+		while [ "$i" -lt "$count" ]; do
+			if [ "$i" -eq "$index" ]; then
+				printf "  %b› %s%b\n" "$C_BOLD$C_CYAN" "${options[$i]}" "$C_RESET" >&2
+			else
+				printf "    %s\n" "${options[$i]}" >&2
+			fi
+			i=$((i + 1))
+		done
+		printf "%bUtilise ↑/↓ puis Entrée.%b\n" "$C_DIM" "$C_RESET" >&2
+		rendered=1
+
+		if ! IFS= read -rsn1 key < /dev/tty; then
+			continue
+		fi
+
+		case "$key" in
+			"")
+				printf "%s" "${options[$index]}"
+				return 0
+				;;
+			$'\x1b')
+				if IFS= read -rsn2 key < /dev/tty; then
+					case "$key" in
+						"[A")
+							if [ "$index" -eq 0 ]; then
+								index=$((count - 1))
+							else
+								index=$((index - 1))
+							fi
+							;;
+						"[B")
+							if [ "$index" -eq $((count - 1)) ]; then
+								index=0
+							else
+								index=$((index + 1))
+							fi
+							;;
+					esac
+				fi
+				;;
+		esac
+	done
+}
+
 sanitize_server_name() {
 	local raw="$1"
 	local sanitized
@@ -314,25 +409,15 @@ collect_server_inputs() {
 
 choose_scope() {
 	local selected
-	while true; do
-		ui_title "Scope de configuration"
-		printf "  1) global (user)\n" >&2
-		printf "  2) project (projet courant)\n" >&2
-		selected="$(prompt "Choix" "1")"
-		case "$selected" in
-			1)
-				printf "global"
-				return
-				;;
-			2)
-				printf "project"
-				return
-				;;
-			*)
-				ui_warn "Choix invalide: $selected"
-				;;
-		esac
-	done
+	selected="$(menu_select "Scope de configuration" "global (user)" "project (projet courant)")"
+	case "$selected" in
+		"global (user)")
+			printf "global"
+			;;
+		*)
+			printf "project"
+			;;
+	esac
 }
 
 apply_claude_mcp() {
@@ -453,48 +538,40 @@ print_header() {
 	printf "%bMCP Install Wizard%b for %b%s%b\n" "$C_BOLD$C_MAGENTA" "$C_RESET" "$C_BOLD" "$BINARY_NAME" "$C_RESET" >&2
 	printf "%bRelease repo:%b %s\n" "$C_DIM" "$C_RESET" "$RELEASE_REPOSITORY" >&2
 	ui_line
-	printf "Choisis une action:\n" >&2
-	printf "  1) Installer/mettre a jour le binaire + setup\n" >&2
-	printf "  2) Configurer Claude Code (apply direct)\n" >&2
-	printf "  3) Configurer Codex (apply direct)\n" >&2
-	printf "  4) Generer JSON MCP manuel\n" >&2
-	printf "  5) Quitter\n" >&2
+	printf "%bSelectionne une action dans le menu interactif.%b\n" "$C_DIM" "$C_RESET" >&2
 }
 
 main() {
-	while true; do
-		print_header
-		local choice
-		choice="$(prompt "Choix" "1")"
-		printf "\n" >&2
+	print_header
 
-		case "$choice" in
-			1)
-				run_setup_wizard
-				return
-				;;
-			2)
-				apply_claude_mcp
-				return
-				;;
-			3)
-				apply_codex_mcp
-				return
-				;;
-			4)
-				ui_info "JSON MCP genere sur stdout."
-				print_mcp_json
-				return
-				;;
-			5)
-				ui_warn "Annule."
-				return
-				;;
-			*)
-				ui_warn "Choix invalide: $choice"
-				;;
-		esac
-	done
+	local action
+	action="$(menu_select \
+		"Choisis une action" \
+		"Installer/mettre a jour le binaire + setup" \
+		"Configurer Claude Code (apply direct)" \
+		"Configurer Codex (apply direct)" \
+		"Generer JSON MCP manuel" \
+		"Quitter")"
+	printf "\n" >&2
+
+	case "$action" in
+		"Installer/mettre a jour le binaire + setup")
+			run_setup_wizard
+			;;
+		"Configurer Claude Code (apply direct)")
+			apply_claude_mcp
+			;;
+		"Configurer Codex (apply direct)")
+			apply_codex_mcp
+			;;
+		"Generer JSON MCP manuel")
+			ui_info "JSON MCP genere sur stdout."
+			print_mcp_json
+			;;
+		*)
+			ui_warn "Annule."
+			;;
+	esac
 }
 
 main "$@"