The wrong agency costs you 6–12 months of your roadmap — not the fee. We've had clients arrive at our door after spending ₹4 lakh on a "website" that never shipped. Every single one of them missed one or more of these 15 questions in the first meeting.
This is not a philosophical guide. It is a checklist. Print it. Bring it to your discovery call. Any agency worth hiring will welcome every single question on this list.
If you want the broader framing — what qualities to look for before you even get to the call — read our companion post on how to choose the right digital agency for your business. This post picks up where that one leaves off: tactical, specific, and structured around the exact questions that expose red flags fast.
Group 1: Process and Communication
Before you evaluate a single deliverable, you need to understand how this agency runs a project. Process problems kill more engagements than skill gaps. These four questions reveal whether the agency has a repeatable system or is making it up as they go.
1. Who is my day-to-day contact — a senior person or a junior one?
This is the single most underasked question in agency vetting. Agencies sell you their founder or their best strategist. They deliver a fresh graduate. Ask directly: who sends me the update emails, who reviews my feedback, and who has the authority to make decisions without escalating?
At Vellumarc, the founder stays directly involved in every active project. That is not standard industry practice. Know what you are buying.
2. Walk me through your process from kickoff to launch.
A competent agency should be able to describe — without hesitation — every phase: discovery, architecture, design, development, QA, staging review, launch, and post-launch handoff. They should name each phase, explain its purpose, and tell you what you need to provide at each stage.
Vague answers here predict vague execution later. "We're flexible and adapt to each client" is not an answer. It is a warning.
3. What happens when a timeline slips? Not "if" — when.
Every project of meaningful complexity hits at least one delay. The question is not whether your agency has experienced delays — it is whether they have a documented protocol for communicating them. Ask: how many business days before a missed deadline will you notify me? Who sends that communication? What is the revised plan?
If the answer is anything other than a clear, confident protocol, you are about to be surprised by a missed deadline with no warning.
4. How do you handle scope changes — change order or bigger invoice?
Scope creep is the leading cause of budget blowouts. Some agencies quietly absorb small changes and then hit you with a large invoice at 80% completion, when you have no leverage to push back. Ask: is every scope change documented in writing with a cost estimate before work begins? Do I sign off before it proceeds?
The answer should be yes, always. No exceptions.
Group 2: Technical Credibility
A good-looking proposal tells you nothing about engineering quality. These four questions test whether the team has genuine technical depth — or whether they are reselling templates and calling it custom development.
5. Why would you choose this stack over an alternative for my project specifically?
Name a specific choice. If you are building an e-commerce platform, ask why they would use Shopify versus a custom Next.js build. If you are building a SaaS product, ask why they chose their database. The answer should reference your scale, your team's ability to maintain it, your budget, and your future growth trajectory.
"We use it for everything" is the wrong answer. Technology decisions should be made per-project, not per-agency-preference. See how we approach this on our services page — every recommendation starts with the brief, not the toolbox.
6. What performance benchmarks do you target — LCP, INP, Lighthouse?
If the developer you are speaking to does not know what Largest Contentful Paint is, stop the call. Web performance is not optional. Core Web Vitals directly affect your search rankings and your conversion rate. A credible agency should be able to state specific targets: "We target a Lighthouse performance score above 90, LCP under 2.5 seconds, and Cumulative Layout Shift below 0.1."
If they tell you "the site will be fast," ask them to define fast. The ones who cannot are delivering slow sites.
7. Do you write automated tests? What kind?
Many agencies in India deliver code with zero test coverage. That means every change to your codebase is a manual regression risk. Ask: do you write unit tests, integration tests, or end-to-end tests? Which tools do you use? What percentage of critical paths are covered?
You do not need 100% coverage. You do need the checkout flow, the authentication system, and any financial logic to be tested. If they look uncomfortable when you ask, assume the answer is no.
8. What does your code review process look like?
Does every commit go through a pull request? Does a second developer review it before it merges? Is there a CI pipeline that runs tests automatically? This matters not just for quality during the build — it matters for what happens when you bring in a different agency or an in-house developer two years from now. Unreviewed code is technical debt you will inherit.
Group 3: Pricing Transparency
Budget conversations are where most agency relationships break down. These three questions expose whether the pricing you are seeing is complete or a starting number designed to get you in the door.
9. What is explicitly not included in this quote?
Ask this verbatim. The answer reveals everything. Excluded items that should always be discussed upfront: content writing, photography, third-party software licenses, domain and hosting, post-launch bug fixes, SEO, browser compatibility testing beyond Chrome, mobile testing on actual devices, and data migration if you are switching platforms.
If the exclusions list is short, probe harder. If they say "it's all included," get that in writing.
10. What is the typical cost of post-launch support for the first 12 months?
Most agencies charge for the build and present the post-launch retainer as a separate conversation after you are already committed. Ask about it on the first call. A serious agency will have standard monthly retainer tiers with documented scope. See our pricing page for how we structure this — no surprises after launch.
The agencies that refuse to discuss post-launch costs during the sales process are the same ones who disappear three weeks after go-live.
11. How do you handle payments — milestones or hourly?
Fixed-milestone contracts protect you. They give you clear deliverables tied to payment. Purely hourly contracts with no milestones shift all the risk to you — there is no ceiling, no defined endpoint, and no accountability for scope.
Ask what percentage is due at kickoff, what triggers each subsequent payment, and what happens to the code if the relationship ends mid-project. You should own everything at every stage.
Group 4: Proof and Track Record
Portfolios are curated. References are real. These four questions give you access to the unedited version of working with this agency.
12. Can I speak to two clients from two years ago?
Not two clients from last month. Two years ago. Why? Because agencies that have delivered long-term results keep clients. Agencies that do a passable launch and then disappear do not. Ask for the contact directly and call them. Ask those references: did the project come in on time, on budget? How responsive were they after launch? Would you hire them again?
13. How many of your clients are still with you after 12 months?
This is the retention question. A healthy agency has a high percentage of clients who stay on for maintenance, growth work, or new projects. If they cannot give you a number, the number is low. Client churn is almost always caused by bad communication, poor delivery, or promises made during the sale that were not kept during the project.
14. Show me an actual project timeline from a recent build — not a case study PDF.
Case study PDFs are marketing documents. They show the before and after. Ask for the actual timeline: the original estimate, the real milestones, where it slipped, how it was resolved. This is the unedited picture of how an agency handles the gap between plan and reality. Competent agencies have this. They are proud of how they managed the hard moments, not embarrassed by them.
15. What is a project you pushed back on, and why?
This is the most important question on this list. Great agencies turn down bad briefs. They tell clients when their idea is underfunded, technically unworkable, or when the timeline is not realistic. An agency that has never pushed back on anything has never acted in a client's best interest — they just execute whatever they are paid to execute, including bad decisions.
The answer you want sounds like: "We had a client who wanted to build a custom CRM in six weeks with a ₹1.5 lakh budget. We told them to use an off-the-shelf tool for 12 months first, validate their workflow, and then come back. They did. We built it in year two — scoped properly, with real data informing the design."
The single biggest red flag
Vagueness about process. If an agency cannot describe — clearly, confidently, and in specific terms — how they run a project, they do not have a process. You will fund the construction of that process. Every "we're flexible" is a future surprise. Every "we'll figure it out as we go" is an undocumented scope change.
The single biggest green flag
An agency that pushes back on your ideas. The ones who ask hard questions in the discovery call — who challenge your assumptions about scope, timeline, and technology — are the ones who are thinking about what actually ships, not just what gets them to a signed contract. Deference is not alignment. Pushback is respect.
Key takeaway
Vagueness about process is the clearest signal that an engagement will go wrong. Pushback on your brief is the clearest signal that an agency is operating in your interest. Optimize your vetting process to find the second type and filter out the first.
We built Vellumarc in Raebareli because we watched too many businesses in tier-2 India get taken advantage of by agencies that over-promised and under-delivered. We have answered every one of these 15 questions for our own clients — in writing, on record, before a contract was signed.
Browse our completed work to see how we execute. When you are ready to have a real conversation about your project, we are here.