Customer Discovery Interview Template for Founders

A discovery interview fails when it turns into a pitch. This template keeps it a conversation about the past, so you leave with problems instead of compliments.

Copy it, fill the brackets, and run five calls. You do not need a research background. You need to ask about what already happened and then be quiet.

Before the call

Three things must be true, or the call is wasted:

• The right person. Someone who does the work, not someone who manages the person who does it.
• No pitch so far. You reached out to learn, not to sell. Keep it that way until the end.
• A 30-minute frame. Long enough for depth, short enough to schedule.

Ask permission to record. If they decline, take notes and mark the emotional moments.

The template

Use this as a spine, not a script. The brackets are where you insert their world.

Open (2 min). Thanks, context, permission to record. One line: I am trying to understand how [buyer] handles [job] today. I am not selling anything.

Warm-up (3 min). Tell me a bit about your role and what a normal week looks like.

The recent event (10 min).

• When did you last have to deal with [problem]?
• Walk me through what you did, step by step.
• What was the hardest part?
• What did it cost you, in time or money?
• What did you do the time before that?

The workaround (6 min).

• What are you using for this today?
• What have you tried before?
• Why did you stop using the last thing you tried?
• If this broke tomorrow, what would you do?

The trigger and the stakes (5 min).

• What made you start looking for a better way?
• Who else is affected when this goes wrong?
• What happens if it stays like this?

Close (4 min).

• If you could wave a magic wand and change one thing, what would it be?
• Is there anything I should have asked?
• Would you be open to seeing an early version when it exists?

Notice there is no question about whether they like your idea. That is the point.

Sequencing rules that keep it honest

• Past before future. Every question above asks about something that happened.
• Follow the emotion. When their voice changes, stop the list and go deeper there.
• Ask why three times. The first answer is the polite one.
• Do not fill silence. Ask, then wait. The gap usually fills with the truest sentence of the call.
• Save the wand question for last. It reopens the conversation after the structured part.

If you want the underlying question set with annotations, the customer discovery interview questions guide breaks down each one and the traps to avoid.

After the call

Do this within an hour, while it is fresh:

1. Write the three strongest quotes verbatim. Not your summary; their words.
2. Note the cost they mentioned, even if approximate.
3. Tag the underlying job, not the topic.
4. Rate intensity 1 to 5. A problem they shrug at is not the same as one that clearly frustrates them.

After five calls, read the notes side by side. Look for themes, not votes: a problem mentioned casually by many people can matter less than one that caused visible frustration in a few. Counting frequency and intensity separately is what makes quotes more useful than summaries.

FAQ

How many people should I interview?

Five to ten is a practical range. Stop when new calls stop telling you anything new. If calls six and seven repeat call five, you are close.

Can I run this by email or chat?

It is much weaker. You lose tone, follow-ups and the ability to sit in silence. If you must, keep it to one open question and ask for a story, not an opinion.

What if they ask what I am building?

Answer in one sentence, then return to their past. You can pitch after the interview, once you have earned the right to.

Where do I find interviewees?

Niche communities, the reviewers of a competitor, and people who publicly complained about the problem. If you need a starting list, run a report for 2.99 EUR to find validated pain signals with sources, then invite a few of those people to a call. Keep every call consistent by reusing this template.