Discovery Interview Prep — Customer Discovery Interview Preparation Skill

Skill Overview

Discovery Interview Prep is an interactive interview preparation skill. Through four adaptive questions, it clarifies the research objective, target audience, interview constraints, and interview methodology, then generates a ready-to-use customer discovery interview plan for product managers. The plan covers interview question design, common bias avoidance, and success criteria.

Use Cases

1. Churn research: Interview enterprise customers who churned within the past 90 days to understand why they left or stopped using the product.
2. New product idea validation: You have only a product idea, a two-week deadline, and can reach potential users only through cold outreach. You need to validate whether the problem truly exists and is painful enough.
3. Low activation rate diagnosis: Users register but do not activate the core feature, and you want to identify the barriers and underlying reasons through in-depth interviews.

Core Features

1. Adaptive interview planning: Gradually asks about the research objective—problem validation, JTBD discovery, churn investigation, or feature prioritization—as well as the target audience and time/channel constraints. Based on the answers, it recommends a suitable interview methodology, such as Mom Test-style problem validation, JTBD interviews, switching interviews, or timeline interviews, rather than applying a fixed template.
2. Bias-resistant question framework: Generates a complete interview guide covering the opening, core questions, and closing. Each core question includes suggested follow-up directions and a “don’t ask it this way” comparison example, helping you avoid common pitfalls such as leading questions, hypothetical questions, confirmation bias, and turning a sales pitch into “research.”
3. Actionable execution support: Provides recruiting recommendations— including recruitment channels and outreach ratios based on constraints such as existing customers, cold outreach, or access only to internal sales staff—as well as scheduling and note-taking advice, such as conducting 45–60-minute sessions, limiting interviews to no more than 2–3 per day, and recording notes immediately after each interview. It also provides concrete criteria for determining whether the interviews were successful, such as hearing specific stories rather than general complaints and seeing the same pattern emerge across three or more interviews.

Frequently Asked Questions

What is the difference between a customer discovery interview and a usability test?

The purpose of a discovery interview is to learn about the problem—understanding users’ pain points, motivations, and existing solutions. The purpose of a usability test is to validate a solution—seeing whether users can successfully use your prototype or product. This skill focuses on the former. If you have already defined the problem and want to test a specific design solution, you should use a usability testing framework instead of this skill.

Is it still valuable if I can only schedule 5–10 interviews?

Yes. Customer discovery interviews are in-depth qualitative research. The goal is to identify patterns that recur across interviews with 5–10 people, not to achieve statistical representativeness. One of the success criteria provided by this skill is that “the same pain point appears independently in at least three interviews.” It will also tell you that you typically need to contact 20–30 people to secure 5–10 interviews, assuming an approximately 33% response rate, and will provide a recruitment strategy tailored to your resource constraints.

How long does it take to use this skill, and what does it produce?

Approximately 15–20 minutes. The skill asks up to four questions—research objective, interview participants, constraints, and methodology preference—with 3–4 options for each question; you can also describe your situation in your own words. It then generates a complete interview plan, including an opening script, five core questions with follow-ups and pitfalls to avoid, a bias-avoidance checklist, success criteria, and recruitment and scheduling recommendations. Note that it does not generate large-scale surveys or replace conducting interviews with real customers. If you can interview only internal sales or support teams, it will clearly flag this as proxy research and advise validating the findings with real customers as soon as possible.