Many people say yes to an interview, and few of them use the thing you are studying. I would rather find that out before I book any calls. A short screener does the sorting for you.
About them
Name, email, role and company size. You need these to match your target user and to send the invite.
Their experience
How often they use similar tools, which ones, and the last time they did the task. That last answer is the real test. Vague stories rarely make good interviews, and a specific one tells you where the pain is.
Practical details
Formats they accept, weekdays, time zone, an adult confirmation and an optional recording tick. They save a round of emails later.
Who fills it and who reads it
You post the link to a customer list, a forum or a social post. Each visitor can let their own AI answer: "Which tools do you use?" Then "Tell me about the last time you did this task." Then "Which weekdays can you join?" It shows the answers and sends only after a yes. See agent-fillable forms. You read the CSV and decide who to invite.
A tip
If you offer a thank-you, say so in the form description. To size a topic before interviews, use a market research survey. A website feedback form gives quick signals, and a webinar registration suits a group session. More ideas are in forms for SaaS and startups.
Questions
How do I pick who to interview?
Sort the CSV by the answers that match your target user, then read the last-time story. Invite people whose stories are specific, not short or vague.
Can I limit how many people sign up?
Yes. Set max_responses as a cap and close_at as a deadline. Use both so your pool stays small enough to read in one sitting.
How does the recording question work?
It is an optional checkbox that records a yes. The form does not record anything itself. Ask a professional to check the wording if your study is formal.