Questions to Ask a Growth Agency in a Discovery Call

Here are three ways to frame the question:

  • What Questions Should You Ask a Growth Agency in a Discovery Call?

  • The Growth Agency Discovery Call Checklist: 12 Questions Founders Must Ask

  • Hiring a Growth Agency? Ask These Questions Before You Sign

TL;DR

The wrong growth agency will waste your budget and time. In a discovery call, ask about their track record (specific metrics, not generalities), their process for choosing channels, the pricing model (retainer vs. performance vs. GAAS), who works on your account, and what happens if results don’t show in 90 days. Listen for vague promises or guaranteed results. Use the checklist below to stay in control.

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Why the Discovery Call Matters More Than the Pitch Deck

A slick pitch deck can make any agency look like the best thing since sliced bread. But a discovery call where you ask the right questions will tell you if they can actually move your metrics.

We’ve seen founders sign with agencies that looked great on paper only to get generic playbooks, junior staff, and zero real traction. The discovery call is your one chance to probe before you commit. Treat it like a job interview, but remember: you are the hiring manager. You need hard evidence, not fluff.

Questions About Track Record and Results

What growth metrics have you actually driven for startups like mine?

Ask for numbers. Real numbers. Not “we helped clients grow” but “we took an AI startup from 10,000 to 2,000,000 users at a $0.02 CAC using our stealth GTM framework.” That is a real example from us at ScaleMyStartup. If the agency can’t give you a specific metric that matters (CAC, LTV, install cost, activation rate, retention), that’s a red flag.

They should be able to point to a company with a similar stage, sector, or product type. If they only show big brand logos, that means nothing for your early stage.

Can you walk me through one full case, start to finish?

Ask them to tell the story: starting point, what they tested first, what failed, what worked, how they scaled, and what happened after they handed it off. A good agency will have a narrative, not a bullet list. If they dodge or get defensive, walk away.

A whiteboard with a timeline showing experiments, failures, and a growth hockey

Questions About Strategy and Process

What’s your framework for going from 0 to traction?

A discovery call is the time to assess their mental model. Do they have a repeatable process? We use a “stealth GTM framework” that starts with rapid channel experiments, then doubles down on what works, all while keeping cost per acquisition low. Ask about their own framework. If they say “we just do paid ads and content,” they are a commodity, not a partner.

How do you decide which channels to prioritize?

The wrong answer: “We start with Facebook and Google because that’s what everyone does.” The right answer: “We analyze your product, ICP, and unit economics. Then we run small, cheap experiments across 5-10 channels. Whichever shows the strongest signal gets the budget.” That’s how we think. If they have no structured channel selection process, they will waste your money.

Questions About Pricing and Engagement Model

Retainer vs. performance-based vs. GAAS: what’s the difference?

  • Traditional retainer agency: You pay a fixed monthly fee for a set scope. You take all the risk if results don’t come.

  • Freelance growth consultant: Hourly or project-based. Good for specific tasks but lacks system integration.

  • In-house hire: Full-time salary plus equity. Highest fixed cost, longest ramp.

  • GAAS (Growth as a Service): Like ours. You pay a flat monthly retainer but we share risk by tying part of our compensation to milestones. We embed in your team, run experiments fast, and hand off systems.

Be honest about tradeoffs. Retainers are predictable but not aligned. GAAS is more aligned but may require a longer commitment to see compound effects.

What happens if results don’t show up in 90 days?

Every growth initiative has a learning phase. But good agencies set clear expectations: they will have leading indicators (cost per experiment, signal strength) within 30 days, and concrete outcomes (improved CAC, activation rate) within 90. If they can’t give you a timeline or if they promise guaranteed results immediately, that’s a red flag. Growth doesn’t work on a fixed calendar.

Questions About Team and Ownership

Who’s actually working on my account?

You want to know: the person you met in the call, or some junior strategist you never met? Ask for the lead’s experience, their track record, and how many accounts they handle at once. We assign a senior growth lead to each account and keep the ratio low. If they can’t name the person or if the CEO sells you then passes you to an intern, that’s a problem.

Do you build systems we can run internally later, or create dependency?

The best agencies build transferable systems: dashboards, experiment playbooks, automated funnels. We call this “handoff readiness.” If they only produce reports and don’t teach you how to run the next experiment yourself, you’ll be trapped. Ask for an example of a system they built that the client continues using after the engagement ends.

A flowchart showing how experiments feed into a playbook, with “client team take

Red Flags to Listen For in Their Answers

  • “We can’t share specific numbers due to NDAs.” That’s often an excuse. They can anonymize.

  • “We guarantee results.” Nobody can guarantee growth. Anyone who does is either lying or using a loophole.

  • “You need a big budget to start.” Not always true. Good growth agencies start small and scale spend based on proven signal.

  • “We handle everything, just trust us.” No. You want transparency and collaboration.

  • They avoid talking about failures. Every growth story has experiments that bombed. If they only show wins, they are glossing over lessons.

Growth Agency Discovery Call: Comparison Table

Model

Cost

Speed to Start

Flexibility

Risk

Typical Use Case

Traditional Retainer Agency

Medium to high monthly fee, no performance upside

2-4 weeks

Low, fixed scope

High (you pay even if nothing works)

Established companies with steady budgets

Freelance Growth Consultant

Hourly or project, lower than retainer

1-2 weeks

High, can pivot

Medium (you manage scope drift)

Startups needing a specific tactic (e.g., paid ads audit)

In-house Hire

High (salary + equity + benefits)

4-8 weeks to hire and ramp

Medium (you control but slow)

Low (long-term ownership)

Startups with product-market fit and stable funding

GAAS (e.g., ScaleMyStartup)

Fixed monthly retainer, partly tied to milestones

1 week

High, experiment-driven

Shared (agency risks some compensation on outcomes)

Early-stage founders who ship fast and want a partner, not a vendor

Note: No model is perfect. In-house gives the most control but takes months to hire. GAAS gives speed and alignment but requires a founder who is hands-on. Pick the one that matches your stage and appetite for risk.

A Sample Discovery Call Checklist (12 Questions, Copy-Pasteable)

1. What specific metric did you move for a startup in my stage and sector?

2. Walk me through one full case from start to finish, including failures.

3. What is your framework for choosing channels?

4. How do you run experiments and decide what to kill?

5. What is your pricing model? Retainer, performance, or GAAS?

6. What happens if we see no improvement in 90 days?

7. Who will work on my account daily? Can I meet them?

8. Do you build systems I can run myself later? Give an example.

9. What does a typical weekly report look like?

10. How many clients does your lead work with at once?

11. Can I talk to one current or past client (if possible)?

12. What is your cancellation policy?

Take notes during the call. Compare answers across agencies. Trust patterns, not promises.

FAQ

How long should a growth agency discovery call take?

Plan for 45 to 60 minutes. Any shorter and you won’t get depth. Any longer and they’re over-explaining. Stick to your checklist.

Should I ask for references or past client names?

Yes, but don’t expect them to share current clients due to privacy. Ask for one or two case studies with anonymized metrics. If they refuse even an anonymized story, that’s suspicious.

What if the agency won’t share specific metrics?

That’s a red flag. Any reputable growth agency has at least one detailed case study they can share. If they hide behind “proprietary data,” they likely don’t have strong results.

Is it a red flag if they promise guaranteed results?

Absolutely. Growth depends on product, market, timing, and execution. No agency can guarantee outcomes. They can guarantee process and effort, not results. If they do, they’re either inexperienced or dishonest.

What’s the difference between a growth agency and a marketing agency in this context?

A marketing agency typically handles brand awareness, content, or general ads. A growth agency focuses on measurable user acquisition, retention, and revenue. Growth agencies run experiments, optimize funnels, and tie everything to unit economics. If an agency can’t articulate that difference, they’re probably just a marketing agency calling themselves growth.

How do I know if a GAAS model is right for my startup vs. hiring in-house?

GAAS works best if you are pre-growth, ship fast, and need a partner who can jump in immediately without the hiring delay. In-house is better once you have a proven growth playbook and need a full-time operator to run it. If you are still testing channels and don’t have a dedicated growth lead, GAAS saves you time and cash. We’ve helped startups like the one we scaled from 10k to 2M users at $0.02 CAC because we moved faster than any in-house hire could.

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If you ship fast, think like a student, and experiment like a scientist, we should talk.

Book an intro call with ScaleMyStartup and see if our growth as a service model is the right fit. We’re not for everyone. But if you want a partner who delivers real traction and hands you the keys, you’ll find how we work with founders on our about page. No fluff, just results.

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