Business // Vibe Coding2026-10-244 min read

How do I choose an agency to build or fix a vibe-coded app?

Compare vibe-coding agencies by their review process, defined scope, evidence, account ownership, handover, and ongoing support instead of demo speed alone.

Varun Raj Manoharan
Varun Raj ManoharanFounder & Principal Engineer
Vibe CodingAI Coding AgentsVendor EvaluationAI Strategy

Key takeaways

  • Ask for a review of the actual app before accepting a broad build proposal.
  • Compare deliverables and responsibilities using the same business scope.
  • Require understandable evidence, access ownership, and a practical handover.

Choose an agency by how it understands the business workflow, reviews the application, verifies changes, and hands over the operating setup. Ask who will do the work and what evidence you will receive. The speed of an AI-generated demo is only one part of the decision.

The NIST Secure Software Development Framework publication provides a shared vocabulary for secure-development practices and discussions between software producers and purchasers. It is a useful reference for evaluating a process, rather than treating an agency's tool list as proof of quality.

What should happen in the first conversation?

The agency should ask who uses the app, what task it must complete, what information it handles, and which systems it connects to. If a prototype exists, the team should want to inspect the actual implementation before making detailed promises.

Explain the smallest useful release and the important consequences of failure. A supplier cannot price or verify a meaningful scope from the statement "make it production-ready" alone.

Ask who is accountable for technical decisions and how you will communicate with that person. The proposed working arrangement should be clear before the project begins.

Which questions reveal the quality of the process?

QuestionA useful answer should include
How will you assess the existing app?Access, review scope, and findings deliverable
How will changes be checked?Review and relevant acceptance cases
What do we receive?Code, configuration ownership, and handover material
What is excluded?Explicit limits and responsibilities
What happens after launch?Support coverage and change process

Ask for examples of the evidence, with confidential details removed. A team should be able to explain a review record, test result, or deployment handover without exposing another client's data.

How should I compare quotes?

Give suppliers the same brief and ask them to state assumptions. Compare discovery, implementation, integrations, verification, migration, and support separately. A lower total may reflect an excluded responsibility rather than a more efficient approach.

For an illustrative supplier portal, one proposal might include user invitations and record-level access checks while another includes only the interface. Those proposals need reconciliation before the price comparison becomes useful.

Avoid accepting unsupported promises about universal delivery times, security, or percentage cost savings. Ask which conditions would change the estimate and how additional work will be authorized.

What should I expect from AI-assisted delivery?

The agency should explain how it reviews and verifies agent-generated changes. Ask for manageable increments, a record of decisions, and demonstrations against representative tasks. A large generated diff is not a useful substitute for progress you can inspect.

Agree which accounts belong to the business and which services the agency manages. Document access, billing, recovery, and the route to another maintainer if the arrangement ends.

If the project is uncertain, a scoped review may be the appropriate first engagement. It can reveal whether the next step is a targeted fix, a new feature, a migration, or no further build at all.

Start with a brief that leads to a useful decision

Share the business goal, current app, known issues, and intended release. Explore FoundrySoft's vibe-coding services to choose a review, a scoped build, or ongoing engineering support suited to the work.

Frequently asked questions

Should I choose an agency that uses my preferred AI tool?

Tool familiarity can help, but also assess the team's ability to understand, review, deploy, and maintain the resulting application. Agree the working setup if continued use of a particular builder matters.

Can we begin with a small paid review?

A defined review can be a sensible way to establish the starting point. Specify the systems examined, deliverables, and how the findings will inform any later proposal.

What should make me question a proposal?

Unclear responsibility, no review of the existing system, unsupported guarantees, missing access arrangements, and an undefined handover deserve clarification before you commit.

Interactive Engineering Calculators

Estimate your project cost, token budget, and automation ROI

We built free, production-calibrated tools to help engineering leaders forecast token consumption, compare build vs buy scenarios, and audit code security.

Available for new projects

Let's build something great.

Have a project in mind? We are an elite software and AI development studio ready to bring your ideas to production. Let's talk about your roadmap.

See our work