Use the build assistant

The Assistant panel is the third panel on the right side of Build. It reads your current screener and question guide and edits them on request. Use it as a writing partner that works from your current draft.

Steps

1. Open the Assistant panel

   On desktop, the Assistant is visible by default. If it's collapsed, click the chat icon on the right edge.

   On mobile, tap the Assistant tab at the bottom.

2. Ask for an edit in plain language

   Examples that work well:

   • "Rewrite question 4 so it doesn't lead the answer."
   • "Add a follow-up to the pricing question that probes for willingness to pay."
   • "Group all the onboarding questions into a section."
   • "Make the screener shorter. Keep it to 5 questions."
3. Review the updated draft

   The assistant applies edits to your draft as it works. Review the changes, click Undo to reverse them, or ask for a revision.

4. Keep iterating

   Each turn builds on the previous one. You can send a series of small edits without re-explaining your study.

Strella saves any change the assistant makes to your draft, the same as an edit by hand. Participants see nothing until you publish.

What the assistant deletes

The assistant deletes a question, statement, section or screener question when your message asks for a removal, in any language, such as "remove the pricing question", "replace the guide with this document" or a yes to a removal it suggested. When your message asks for no removal, it keeps the item, and edits it or asks whether you want it removed.

When the assistant moves a question, for example from the screener into the question guide, it deletes the original only after the copy is in place.

Clear a section

Ask to "Remove all questions from Comedy" to keep the section and its statements, or "Empty Comedy" to remove everything inside that section. If a name is missing or matches several sections, the assistant asks which one you mean before editing. Select a question or another item inside a section and say "Clear this section" to clear its containing section. If your reference is vague, such as "remove the questions from it", the assistant asks what you mean.

If you edit a question while the assistant is clearing the section, Strella keeps your changed question and shows a notification asking you to retry. Undo restores the items that request removed and keeps your other edits. Redo removes those restored items again.

If you add, move, or delete an item manually while the assistant is working, Undo follows the order of those actions. The assistant's changes before and after your manual action can take separate Undo steps.

Copy from another project

Ask the assistant to bring questions over from another project in your organization, by its name.

• Copy a whole guide or screener. "Copy the screener from Clinic operations survey" replaces this project's screener with that project's. Ask for the question guide, the screener, or both. If several projects match the name, the assistant asks which one you mean. Undo restores what was here.
• See or copy one question. "What does Clinic operations survey ask clinics that never take payment online?" shows you that question's wording and answer options and changes nothing. "Copy that question over" adds only that question here, with the same wording, answer options and qualifications.
• Its routing comes with it. When you pick a screener question by where an answer sends people, the assistant sends that answer to the copy here and routes the copy's answers the way the other project does.
• Your routing stays. The assistant doesn't turn off routing you set unless you ask it to. If copying a question means changing who qualifies, it asks first.

Build from a website

Paste a link and the assistant reads the page before it writes anything, so the tasks and questions it drafts are about what's actually there (the real sections, the real wording) rather than generic ones about the topic.

This works for any public page: a live site, a hosted prototype, a product or pricing page, a competitor's site. It isn't limited to Figma.

• Paste the link with your request. "Make a guide from this" or "what should we test here?" The link can go in the same message or an earlier one.
• Point at the exact pages you care about. The assistant reads the links you paste, not the pages they lead to. If a specific flow matters, paste that page's link too. You can include several links in one message.
• Private addresses won't work. A page only you can reach (localhost, an address on your office network, anything behind a login) can't be read. Use a publicly reachable link instead, like a preview deployment that doesn't require signing in. The assistant doesn't read links to your Strella projects either: to use another project's guide or screener, name the project.
• If a page won't load, the assistant says so. Strella can't retrieve some public pages. Paste the parts that matter, or a screenshot, and the assistant works from those. It never searches the web for your product or your study.
• Check that it actually read the page. The assistant doesn't always say when a page failed: it may write something plausible from general knowledge instead. If the guide feels generic or describes things you don't recognise, treat the page as unread and tell the assistant what's on it yourself.

Attach a screenshot

Copy an image and paste it into the message box, with no need to save it to a file first. It attaches the same way a dragged-in file does, and you can send it with your request.

Tips

• It edits the draft, not the live interview. To change how the AI moderator delivers the interview, edit moderator settings.
• Ask for a critique, not just edits. "What's weak about this screener?" is a useful prompt.
• Reference steps by their text, not by position: "the question about pricing" is clearer than "step 4" if you've reordered.
• The assistant won't go off and answer your research question. It's there to help you build the study, not to imagine what participants might say.

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