For prompts: You can upload multiple prompts at once. Every line break in the input field creates a new prompt, so you can easily copy and paste dozens or even hundreds of prompts from an Excel file, Word document, or text file.
You can also bulk-upload prompts (with tags) from a csv file (see this guide). To do so, simply click on Bulk Add in the top-right of the Prompts page.
For tags: There's currently no option to batch upload tags, but we're looking into adding this feature.