diff --git a/lib/cli.sh b/lib/cli.sh
index c70d574..8e8f636 100644
--- a/lib/cli.sh
+++ b/lib/cli.sh
@@ -7,7 +7,7 @@
 # ============================================================================
 
 # Four flag buckets (Bash 3.2 compatible - no associative arrays)
-readonly HOST_ONLY_FLAGS=(--verbose rebuild)
+readonly HOST_ONLY_FLAGS=(--verbose rebuild --global)
 readonly CONTROL_FLAGS=(--enable-sudo --disable-firewall)
 readonly SCRIPT_COMMANDS=(shell create slot slots revoke profiles projects profile info help -h --help add remove install allowlist clean save project tmux kill)
 
@@ -65,6 +65,9 @@ process_host_flags() {
             rebuild)
                 export REBUILD=true
                 ;;
+            --global)
+                export GLOBAL_MODE=true
+                ;;
             tmux)
                 export CLAUDEBOX_WRAP_TMUX=true
                 ;;
diff --git a/lib/config.sh b/lib/config.sh
index 640211a..d42756d 100755
--- a/lib/config.sh
+++ b/lib/config.sh
@@ -97,11 +97,19 @@ expand_profile() {
 
 # -------- Profile file management ---------------------------------------------
 get_profile_file_path() {
-    # Use the parent directory name, not the slot name
-    local parent_name=$(generate_parent_folder_name "$PROJECT_DIR")
-    local parent_dir="$HOME/.claudebox/projects/$parent_name"
-    mkdir -p "$parent_dir"
-    echo "$parent_dir/profiles.ini"
+    # Check if global mode is enabled
+    if use_global_mode; then
+        # Use global profiles file
+        local global_dir="$HOME/.claudebox/global"
+        mkdir -p "$global_dir"
+        echo "$global_dir/profiles.ini"
+    else
+        # Use project-specific profiles file
+        local parent_name=$(generate_parent_folder_name "$PROJECT_DIR")
+        local parent_dir="$HOME/.claudebox/projects/$parent_name"
+        mkdir -p "$parent_dir"
+        echo "$parent_dir/profiles.ini"
+    fi
 }
 
 read_config_value() {
@@ -177,15 +185,22 @@ update_profile_section() {
 }
 
 get_current_profiles() {
-    local profiles_file="${PROJECT_PARENT_DIR:-$HOME/.claudebox/projects/$(generate_parent_folder_name "$PWD")}/profiles.ini"
+    local profiles_file
     local current_profiles=()
-    
+
+    # Check if global mode is enabled
+    if use_global_mode; then
+        profiles_file="$HOME/.claudebox/global/profiles.ini"
+    else
+        profiles_file="${PROJECT_PARENT_DIR:-$HOME/.claudebox/projects/$(generate_parent_folder_name "$PWD")}/profiles.ini"
+    fi
+
     if [[ -f "$profiles_file" ]]; then
         while IFS= read -r line; do
             [[ -n "$line" ]] && current_profiles+=("$line")
         done < <(read_profile_section "$profiles_file" "profiles")
     fi
-    
+
     printf '%s\n' "${current_profiles[@]}"
 }
 
diff --git a/lib/docker.sh b/lib/docker.sh
index 3e3fb50..19ed092 100755
--- a/lib/docker.sh
+++ b/lib/docker.sh
@@ -218,27 +218,46 @@ run_claudebox_container() {
     docker_args+=(
         -w /workspace
         -v "$PROJECT_DIR":/workspace
-        -v "$PROJECT_PARENT_DIR":/home/$DOCKER_USER/.claudebox
     )
-    
-    # Ensure .claude directory exists
-    if [[ ! -d "$PROJECT_SLOT_DIR/.claude" ]]; then
-        mkdir -p "$PROJECT_SLOT_DIR/.claude"
-    fi
-    
-    docker_args+=(-v "$PROJECT_SLOT_DIR/.claude":/home/$DOCKER_USER/.claude)
-    
-    # Mount .claude.json only if it already exists (from previous session)
-    if [[ -f "$PROJECT_SLOT_DIR/.claude.json" ]]; then
-        docker_args+=(-v "$PROJECT_SLOT_DIR/.claude.json":/home/$DOCKER_USER/.claude.json)
+
+    # Handle mounting based on global mode
+    if use_global_mode; then
+        # Global mode: Mount user's home directories directly
+        docker_args+=(-v "$HOME/.claudebox":/home/$DOCKER_USER/.claudebox)
+        docker_args+=(-v "$HOME/.claude":/home/$DOCKER_USER/.claude)
+        docker_args+=(-v "$HOME/.config":/home/$DOCKER_USER/.config)
+        docker_args+=(-v "$HOME/.cache":/home/$DOCKER_USER/.cache)
+
+        if [[ "$VERBOSE" == "true" ]]; then
+            echo "[DEBUG] Global mode: mounting user's home directories directly" >&2
+        fi
+    else
+        # Project mode: Mount project-specific slot directories
+        docker_args+=(-v "$PROJECT_PARENT_DIR":/home/$DOCKER_USER/.claudebox)
+
+        # Ensure .claude directory exists
+        if [[ ! -d "$PROJECT_SLOT_DIR/.claude" ]]; then
+            mkdir -p "$PROJECT_SLOT_DIR/.claude"
+        fi
+
+        docker_args+=(-v "$PROJECT_SLOT_DIR/.claude":/home/$DOCKER_USER/.claude)
+
+        # Mount .claude.json only if it already exists (from previous session)
+        if [[ -f "$PROJECT_SLOT_DIR/.claude.json" ]]; then
+            docker_args+=(-v "$PROJECT_SLOT_DIR/.claude.json":/home/$DOCKER_USER/.claude.json)
+        fi
+
+        # Mount .config directory
+        docker_args+=(-v "$PROJECT_SLOT_DIR/.config":/home/$DOCKER_USER/.config)
+
+        # Mount .cache directory
+        docker_args+=(-v "$PROJECT_SLOT_DIR/.cache":/home/$DOCKER_USER/.cache)
+
+        if [[ "$VERBOSE" == "true" ]]; then
+            echo "[DEBUG] Project mode: mounting project slot directories" >&2
+        fi
     fi
     
-    # Mount .config directory
-    docker_args+=(-v "$PROJECT_SLOT_DIR/.config":/home/$DOCKER_USER/.config)
-    
-    # Mount .cache directory
-    docker_args+=(-v "$PROJECT_SLOT_DIR/.cache":/home/$DOCKER_USER/.cache)
-    
     # Mount SSH directory
     docker_args+=(-v "$HOME/.ssh":"/home/$DOCKER_USER/.ssh:ro")
     
@@ -331,49 +350,62 @@ run_claudebox_container() {
         fi
     fi
     
-    # Create project MCP config file by merging project configs
-    # Start with empty config file for merging
-    local temp_project_file=$(mktemp /tmp/claudebox-project-temp-$(date +%s)-$$.json 2>/dev/null || mktemp)
-    mcp_temp_files+=("$temp_project_file")
-    echo '{"mcpServers":{}}' > "$temp_project_file"
-    
-    # Merge shared project settings first
-    local merged_file=""
-    if [[ -f "$PROJECT_DIR/.claude/settings.json" ]]; then
-        merged_file=$(create_mcp_config_file "$PROJECT_DIR/.claude/settings.json" "$temp_project_file")
-        if [[ -n "$merged_file" ]]; then
-            mv "$merged_file" "$temp_project_file"
+    # Handle project MCP configuration (skip in global mode)
+    if ! use_global_mode; then
+        # Create project MCP config file by merging project configs
+        # Start with empty config file for merging
+        local temp_project_file=$(mktemp /tmp/claudebox-project-temp-$(date +%s)-$$.json 2>/dev/null || mktemp)
+        mcp_temp_files+=("$temp_project_file")
+        echo '{"mcpServers":{}}' > "$temp_project_file"
+
+        # Merge shared project settings first
+        local merged_file=""
+        if [[ -f "$PROJECT_DIR/.claude/settings.json" ]]; then
+            merged_file=$(create_mcp_config_file "$PROJECT_DIR/.claude/settings.json" "$temp_project_file")
+            if [[ -n "$merged_file" ]]; then
+                mv "$merged_file" "$temp_project_file"
+            fi
         fi
-    fi
-    
-    # Merge local project settings (highest priority)
-    if [[ -f "$PROJECT_DIR/.claude/settings.local.json" ]]; then
-        merged_file=$(create_mcp_config_file "$PROJECT_DIR/.claude/settings.local.json" "$temp_project_file")
-        if [[ -n "$merged_file" ]]; then
-            mv "$merged_file" "$temp_project_file"
+
+        # Merge local project settings (highest priority)
+        if [[ -f "$PROJECT_DIR/.claude/settings.local.json" ]]; then
+            merged_file=$(create_mcp_config_file "$PROJECT_DIR/.claude/settings.local.json" "$temp_project_file")
+            if [[ -n "$merged_file" ]]; then
+                mv "$merged_file" "$temp_project_file"
+            fi
         fi
-    fi
-    
-    # Check if we have any project servers
-    local project_count=$(jq '.mcpServers | length' "$temp_project_file" 2>/dev/null || echo "0")
-    if [[ "$project_count" -gt 0 ]]; then
-        project_mcp_file="$temp_project_file"
-        if [[ "$VERBOSE" == "true" ]]; then
-            printf "Found %s project MCP servers\n" "$project_count" >&2
+
+        # Check if we have any project servers
+        local project_count=$(jq '.mcpServers | length' "$temp_project_file" 2>/dev/null || echo "0")
+        if [[ "$project_count" -gt 0 ]]; then
+            project_mcp_file="$temp_project_file"
+            if [[ "$VERBOSE" == "true" ]]; then
+                printf "Found %s project MCP servers\n" "$project_count" >&2
+            fi
+            docker_args+=(-v "$project_mcp_file":/tmp/project-mcp-config.json:ro)
+            if [[ "$VERBOSE" == "true" ]]; then
+                echo "[DEBUG] Mounting project MCP configuration file" >&2
+            fi
+        else
+            rm -f "$temp_project_file"
+            project_mcp_file=""
         fi
-        docker_args+=(-v "$project_mcp_file":/tmp/project-mcp-config.json:ro)
+    else
         if [[ "$VERBOSE" == "true" ]]; then
-            echo "[DEBUG] Mounting project MCP configuration file" >&2
+            echo "[DEBUG] Global mode: skipping project MCP configuration" >&2
         fi
-    else
-        rm -f "$temp_project_file"
-        project_mcp_file=""
     fi
     
     
     # Add environment variables
     local project_name=$(basename "$PROJECT_DIR")
     local slot_name=$(basename "$PROJECT_SLOT_DIR")
+
+    # Adjust project_name and slot_name for global mode
+    if use_global_mode; then
+        project_name="global"
+        slot_name="global"
+    fi
     
     # Calculate slot index for hostname
     local slot_index=1  # default if we can't determine
diff --git a/lib/project.sh b/lib/project.sh
index 060ba05..414ec74 100755
--- a/lib/project.sh
+++ b/lib/project.sh
@@ -247,16 +247,87 @@ find_inactive_slot() {
     return 1
 }
 
+# ============================================================================
+# Global Mode Functions
+# ============================================================================
+
+# Check if global mode is enabled
+use_global_mode() {
+    [[ "${GLOBAL_MODE:-false}" == "true" ]]
+}
+
+# Initialize global mode directory structure
+init_global_mode() {
+    local global_dir="$HOME/.claudebox/global"
+
+    # Create global directory structure
+    mkdir -p "$global_dir"
+
+    # Create symlinks to user's home directories
+    # Note: These symlinks are for bookkeeping; actual mounting happens in docker.sh
+    if [[ ! -L "$global_dir/.claude" ]]; then
+        ln -sf "$HOME/.claude" "$global_dir/.claude"
+    fi
+
+    if [[ ! -L "$global_dir/.config" ]]; then
+        ln -sf "$HOME/.config" "$global_dir/.config"
+    fi
+
+    if [[ ! -L "$global_dir/.cache" ]]; then
+        ln -sf "$HOME/.cache" "$global_dir/.cache"
+    fi
+
+    # Create profiles.ini if it doesn't exist
+    [[ -f "$global_dir/profiles.ini" ]] || touch "$global_dir/profiles.ini"
+
+    # Copy common.sh to global directory if it doesn't exist
+    local common_sh_target="$global_dir/common.sh"
+    if [[ ! -f "$common_sh_target" ]]; then
+        local common_sh_source="${CLAUDEBOX_SCRIPT_DIR:-${SCRIPT_DIR}}/lib/common.sh"
+        if [[ -f "$common_sh_source" ]]; then
+            cp "$common_sh_source" "$common_sh_target"
+        fi
+    fi
+}
+
+# Get global mode directory
+get_global_dir() {
+    echo "$HOME/.claudebox/global"
+}
+
+# Get global mode container name (fixed name for global mode)
+get_global_container_name() {
+    echo "global"
+}
+
+# Check if we should use slot-based operations (false for global mode)
+should_use_slots() {
+    if use_global_mode; then
+        return 1  # false - don't use slots
+    else
+        return 0  # true - use slots
+    fi
+}
+
 # ============================================================================
 # Main Functions
 # ============================================================================
 
-# Get the project folder name - returns the next available slot
+# Get the project folder name - returns the next available slot or global container
 get_project_folder_name() {
     local path="$1"
+
+    # Check if global mode is enabled
+    if use_global_mode; then
+        # Initialize global mode and return fixed container name
+        init_global_mode
+        echo "global"
+        return 0
+    fi
+
     # First ensure project is initialized
     init_project_dir "$path"
-    
+
     # Find next available slot
     local slot_name
     if slot_name=$(determine_next_start_container "$path"); then
@@ -269,6 +340,12 @@ get_project_folder_name() {
 
 # Get Docker image name for a specific slot
 get_image_name() {
+    # For global mode, use a fixed image name
+    if use_global_mode; then
+        echo "claudebox-global"
+        return 0
+    fi
+
     local parent_folder_name=$(generate_parent_folder_name "${PROJECT_DIR}")
     printf 'claudebox-%s' "${parent_folder_name}"
 }
@@ -614,6 +691,7 @@ export -f slugify_path generate_container_name generate_parent_folder_name get_p
 export -f init_project_dir init_slot_dir
 export -f read_counter write_counter
 export -f create_container determine_next_start_container find_ready_slot find_inactive_slot
+export -f use_global_mode init_global_mode get_global_dir get_global_container_name should_use_slots
 export -f get_project_folder_name get_image_name _get_project_slug
 export -f get_project_by_path list_all_projects resolve_project_path
 export -f list_project_slots get_slot_dir get_slot_index prune_slot_counter
diff --git a/main.sh b/main.sh
index 0246f35..84e959c 100755
--- a/main.sh
+++ b/main.sh
@@ -256,10 +256,21 @@ main() {
         exit 0
     fi
     
-    # Step 6: Initialize project directory (creates parent with profiles.ini)
-    init_project_dir "$PROJECT_DIR"
-    PROJECT_PARENT_DIR=$(get_parent_dir "$PROJECT_DIR")
-    export PROJECT_PARENT_DIR
+    # Step 6: Handle project vs global mode setup
+    if use_global_mode; then
+        # Global mode: set up global directory structure
+        if [[ "$VERBOSE" == "true" ]]; then
+            echo "[DEBUG] Global mode detected, initializing global configuration..." >&2
+        fi
+        init_global_mode
+        PROJECT_PARENT_DIR=$(get_global_dir)
+        export PROJECT_PARENT_DIR
+    else
+        # Project mode: Initialize project directory (creates parent with profiles.ini)
+        init_project_dir "$PROJECT_DIR"
+        PROJECT_PARENT_DIR=$(get_parent_dir "$PROJECT_DIR")
+        export PROJECT_PARENT_DIR
+    fi
     
     # Step 7: Handle rebuild if requested (will use IMAGE_NAME from step 8)
     local rebuild_requested="${REBUILD:-false}"
@@ -281,9 +292,15 @@ main() {
     IMAGE_NAME=$(get_image_name)
     export IMAGE_NAME
     
-    # Set PROJECT_SLOT_DIR if we have a slot
+    # Set PROJECT_SLOT_DIR if we have a slot (global mode uses "global" as slot name)
     if [[ -n "$project_folder_name" ]] && [[ "$project_folder_name" != "NONE" ]]; then
-        PROJECT_SLOT_DIR="$PROJECT_PARENT_DIR/$project_folder_name"
+        if use_global_mode && [[ "$project_folder_name" == "global" ]]; then
+            # In global mode, the slot directory is the global directory itself
+            PROJECT_SLOT_DIR="$PROJECT_PARENT_DIR"
+        else
+            # Project mode: use slot-specific directory
+            PROJECT_SLOT_DIR="$PROJECT_PARENT_DIR/$project_folder_name"
+        fi
         export PROJECT_SLOT_DIR
     fi