What each action does

AI appears in four places: the note editor, the add/edit dialog for an item, Spotlight, and the search index. All of them need a key first.

In the editor

Notes and task bodies use a rich-text editor with an AI button in its toolbar. There are two other ways in. The small bubble menu that appears over selected text carries the same list minus Custom Prompt… and Continue Writing, and the editor’s slash menu has Continue with AI.

Your selection decides the scope. With text selected, the action runs on that text and replaces exactly that text. With nothing selected, it runs on the whole note and replaces the whole note. The menu tells you which: Applying to selected text appears at the top when there is a selection.

Action	Does
Custom Prompt…	Opens a box for your own instruction, applied to the same scope
Continue Writing	Writes on from the cursor, matching tone and language, and inserts at the cursor rather than replacing
Improve Writing	Clearer, more concise, same meaning and tone
Fix Grammar & Spelling	Grammar, spelling and punctuation only; meaning and style untouched
Make Shorter	Condenses, keeping the key information
Make Longer	Expands with more detail, same tone
Simplify	Simpler words, shorter sentences
Make Professional	Rewrites formally, for business
Make Casual	Rewrites friendlier
Summarize	Key points, as a bullet list
Translate to English	Translates; leaves English as it is

Fix Grammar & Spelling is the one that works on the Free plan. Everything else, including Custom Prompt, carries a padlock until you have Pro.

Only one action runs at a time. The AI button spins while it works, and a second action asked for in the meantime is ignored. The result lands where the action started, even if you moved the cursor while waiting.

These actions overwrite your text

Select first if you only meant to touch a paragraph; with nothing selected, Summarize replaces your note with its own summary. The editor’s normal Ctrl/⌘ + Z still works, so undo immediately if it was not what you wanted.

In the item dialog

The add/edit form for a bookmark has three AI buttons:

• AI Generate writes the Description for you from the URL and title: one or two sentences, aimed at under 150 characters. It needs a URL and a title first, and says so if either is missing.
• Suggest Column reads the URL and title and proposes where the bookmark belongs, shown as Suggested: column with a Move to column button. It needs more than one column to have an opinion. With the search index built, it is usually free and instant, because it can answer from bookmarks you already have.
• Find Similar Websites proposes other sites like this one, each with an Add this website button that turns it into a new bookmark.

In search

AI search in Spotlight matches by meaning rather than by characters. See AI search.

The index

The index is managed under AI Search Index, at the bottom of the AI panel. Press Build index once; the progress reads n / total indexed. AI search does not work properly until you have.

The index is built from each item’s title, URL, contents and tag names. It lives in your browser and is not sent to TabOasis.

If you change provider, you have to rebuild the index. The button becomes Rebuild for provider, with the note You switched providers. Re-index to enable AI search on provider.

What gets sent to your provider

Action	Sends
Editor actions	the selected text, or the whole note body, as HTML
Continue Writing	the text before your cursor, up to about 6,000 characters
AI Generate	the bookmark’s URL and title
Suggest Column	the URL, the title, and your column names
Find Similar Websites	the URL and title
Building the index	each item’s title, URL, contents and tag names
AI search	your query, plus the shortlisted items when reranking is on

That traffic goes from your browser to OpenAI or Google directly and does not pass through TabOasis. See Where the key lives.