diff --git a/install-claude-code.sh b/install-claude-code.sh
index 98cfcfd..0de0def 100755
--- a/install-claude-code.sh
+++ b/install-claude-code.sh
@@ -723,16 +723,67 @@ install_coding_helper() {
             echo -e "  ${YELLOW}npx @z_ai/coding-helper${NC}"
         fi
     else
-        log_error "Installation failed!"
-        echo ""
-        echo -e "${YELLOW}Error output:${NC}"
-        echo "$install_output"
-        echo ""
-        echo -e "${CYAN}You can try installing manually:${NC}"
-        echo -e "  ${YELLOW}npm install -g @z_ai/coding-helper${NC}"
-        echo ""
-        echo -e "${CYAN}Or run without installation:${NC}"
-        echo -e "  ${YELLOW}npx @z_ai/coding-helper${NC}"
+        # Check if it's a permission error (EACCES)
+        if echo "$install_output" | grep -q "EACCES\|permission denied"; then
+            log_error "Installation failed due to permissions!"
+            echo ""
+            echo -e "${YELLOW}The installation requires write permissions to:${NC}"
+            echo -e "  ${CYAN}/usr/local/lib/node_modules/@z_ai${NC}"
+            echo ""
+            echo -e "${BOLD}You have several options:${NC}"
+            echo ""
+            echo -e "${GREEN}Option 1: Use sudo (recommended)${NC}"
+            echo -e "  Run: ${YELLOW}sudo npm install -g @z_ai/coding-helper${NC}"
+            echo ""
+            echo -e "${GREEN}Option 2: Fix npm permissions permanently${NC}"
+            echo -e "  Run: ${YELLOW}sudo chown -R \$(whoami) /usr/local/lib/node_modules${NC}"
+            echo -e "       ${YELLOW}sudo chown -R \$(whoami) /usr/local/bin${NC}"
+            echo -e "  Then: ${YELLOW}npm install -g @z_ai/coding-helper${NC}"
+            echo ""
+            echo -e "${GREEN}Option 3: Run without installation (works immediately)${NC}"
+            echo -e "  Just use: ${YELLOW}npx @z_ai/coding-helper${NC}"
+            echo ""
+            echo -e "${CYAN}Want to try with sudo now? [y/N]${NC}"
+            read -p " " -n 1 -r use_sudo < /dev/tty
+            echo ""
+            if [[ $use_sudo =~ ^[Yy]$ ]]; then
+                echo ""
+                log_info "Installing with sudo..."
+                if sudo npm install -g @z_ai/coding-helper 2>&1; then
+                    if npm list -g @z_ai/coding-helper &> /dev/null 2>&1; then
+                        log_success "coding-helper installed and verified with sudo!"
+                        echo ""
+                        read -p "Launch coding-helper wizard now? [y/N] " -n 1 -r launch_helper < /dev/tty
+                        echo ""
+                        if [[ $launch_helper =~ ^[Yy]$ ]]; then
+                            launch_coding_helper
+                        fi
+                    fi
+                else
+                    log_warn "Sudo installation also failed"
+                    echo ""
+                    echo -e "${CYAN}You can still run it without installation:${NC}"
+                    echo -e "  ${YELLOW}npx @z_ai/coding-helper${NC}"
+                fi
+            else
+                echo ""
+                echo -e "${CYAN}No problem! You can run it anytime with:${NC}"
+                echo -e "  ${YELLOW}npx @z_ai/coding-helper${NC}"
+            fi
+        else
+            # Non-permission error
+            log_error "Installation failed!"
+            echo ""
+            echo -e "${YELLOW}Error output:${NC}"
+            echo "$install_output"
+            echo ""
+            echo -e "${CYAN}You can try installing manually:${NC}"
+            echo -e "  ${YELLOW}npm install -g @z_ai/coding-helper${NC}"
+            echo -e "  ${YELLOW}sudo npm install -g @z_ai/coding-helper${NC}"
+            echo ""
+            echo -e "${CYAN}Or run without installation:${NC}"
+            echo -e "  ${YELLOW}npx @z_ai/coding-helper${NC}"
+        fi
     fi
 }