| name | customer-interview |
| description | Guides founders and product teams through rigorous customer/user research interviews. Use this skill whenever the user mentions customer interviews, user research, customer discovery, talking to users, validating a startup idea, interview guides, customer development, user interviews, discovery interviews, or wants help preparing questions for potential customers. Also trigger when users mention wanting to understand customer needs, test a value proposition, get feedback on an early product concept, or combat bias in customer conversations. This skill is especially relevant for early-stage founders but applies at any stage of product development. |
Customer Interview Skill
A comprehensive guide for planning, conducting, and analyzing customer research interviews. Based on proven frameworks from experienced UX research leaders working with early-stage startups.
When to Use This Skill
- User wants to prepare for customer/user interviews
- User needs an interview guide or discussion guide
- User wants to validate a startup idea with potential customers
- User is planning customer discovery research
- User wants to improve how they talk to customers
- User needs help analyzing interview findings
- User asks about avoiding bias in customer conversations
Core Philosophy
Five to eight focused interviews with a narrowed target customer, about one to two learning goals, yields more actionable insight than 50 unfocused conversations with mixed audiences. Rigor beats volume.
Three-Phase Framework
The skill follows three phases. Read the relevant reference file for detailed guidance on each:
Phase 1: Plan — Focus Your Research
Reference: references/phase1-planning.md
Before any interviews, build a mini research plan with three components:
- Decision to make — What specific next decision will this research inform?
- Learning goals — What 1-2 things do you know least about that inform that decision?
- Target customer — Who specifically will you talk to? (psychographics first, then demographics)
Key principle: Chunk research into sprints of 5-8 focused conversations rather than dozens of scattered ones.
Phase 2: Conduct — Ask Better Questions
Reference: references/phase2-conducting.md
Two objectives during interviews:
- Get better data — Combat three bias types (confirmation, acquiescence, future-prediction)
- Uncover unexpected insights — Use the Zoom Out → In → Out framework
The Zoom Out-In-Out structure:
- Zoom Out: Understand their world, context, and priorities broadly
- Zoom In: Dig into your specific topic area and test your concept
- Zoom Out: Final big-picture questions to calibrate importance
Key tactics:
- Ask one short question at a time
- Avoid leading questions (no yes/no, no adjectives implying answers)
- Always ask the counter ("What doesn't work?" after "What works?")
- Ask about specific recent behaviors, not hypothetical futures
- When sharing a concept: strip adjectives, pause after each chunk, ask "What comes to mind?"
Phase 3: Analyze — Data → Insights → Action
Reference: references/phase3-analysis.md
Three levels of analysis:
- Small (essential): 15-min debrief after every interview
- Medium (recommended): 1-hour weekly synthesis session
- Large (bonus): Affinity diagramming across all interviews
DIA framework for each debrief:
- Data: What did they say or show? (quotes, strong emotions, workarounds, behaviors)
- Insights: Your interpretation — why does this matter? What patterns emerge?
- Action: What follow-ups, question changes, or next steps?
How to Use This Skill as Claude
When a user triggers this skill, determine where they are in the process and help accordingly:
If they need a research plan:
- Ask about their product/idea
- Help them define their decision, learning goals, and target customer
- Read
references/phase1-planning.md for detailed guidance
If they need an interview guide:
- Understand their learning goals and target customer
- Build a Zoom Out-In-Out structured guide
- Read
references/phase2-conducting.md for question frameworks and bias prevention
- Produce a document (markdown or docx) with the interview guide
If they need help with analysis:
- Help them set up a debrief template (DIA framework)
- Guide them through synthesis
- Read
references/phase3-analysis.md for detailed methods
If they want the full workflow:
Walk them through all three phases sequentially, producing deliverables at each stage.
Output Formats
Depending on the request, produce:
- Research plan — A concise document with decision, learning goals, target customer definition, and cohort plan
- Interview guide — A structured discussion guide with Zoom Out/In/Out sections, specific questions, and bias-prevention reminders
- Debrief template — A note-taking and analysis template with DIA fields
- Analysis framework — Guidance on synthesis methods appropriate to their stage
Always include practical reminders about bias prevention and the "ask the counter" principle throughout any deliverable.