A dapps development services company may propose product requirements, application architecture, smart-contract work, testing evidence, deployment documentation, and an operational handoff. Those are possible scope items, not guaranteed services. To assess a proposal, define the user flows first, identify which components are on-chain and off-chain, then request verifiable artifacts and clear responsibility boundaries for each deliverable.

Define the dapp problem and user flows

Start with a short project brief that names the intended users, the actions they need to complete, and the problem the application is meant to address. Describe each important user flow in observable steps—for example, what the user initiates, what the application displays, and what outcome counts as completion. This gives a provider a concrete basis for estimating and designing work without presuming any particular chain or vendor capability.

Next, separate functions that require shared blockchain state from those that can be handled by ordinary application components. A dapp is not necessarily a single on-chain program: an Ethereum dapp combines a smart contract on a decentralized network with a frontend interface, while supporting services may still introduce centralized dependencies. Ask the provider to label each proposed component and explain its role rather than calling the entire system “on-chain.”

Record assumptions that can materially change the design: which network is in scope, what wallet interactions are expected, and whether the application depends on an oracle or other external service. A smart contract cannot directly retrieve off-chain facts that are absent from blockchain state; an oracle connection can supply such information, but introduces questions about its data sources, freshness, availability, and trust model. source

Finally, define acceptance criteria that can be checked against the brief. Criteria might specify which user flows must be demonstrated, which documents must be delivered, and which unresolved assumptions must be disclosed. Keep acceptance focused on observable work products rather than broad promises such as “fully decentralized” or “secure.”

What a dapps development services company may deliver

Ask the company to identify the proposed deliverables explicitly and mark each as included, excluded, or dependent on another party. Common categories to clarify include:

  • Requirements and design: user flows, functional requirements, assumptions, and exclusions.
  • Architecture: a component diagram showing the frontend, contracts, network connections, and supporting services.
  • Contract artifacts: specifications and implementation materials, if smart-contract development is included.
  • Testing evidence: a test plan and results tied to stated requirements, along with the scope and limits of any security review.
  • Handoff materials: build and operating documentation, access responsibilities, and a plan for maintenance or incident handling, if these are agreed work items.

Treat this list as a review checklist, not a universal service package. A proposal should say what the provider will produce, what format it will take, who reviews or accepts it, and what other work must happen first. If a contract is part of the project, request the deployed contract address and the interface definition or ABI needed by an application to encode calls and interpret responses. The ABI must match the deployed contract interface and network address; an artifact with no clear relationship to the deployed version is not sufficient evidence of that match.

Do not infer that a provider operates the application just because it builds a frontend or contract. Ask which party controls each service and who is expected to maintain it after handoff. A proposal that names responsibilities without assigning an owner leaves an operational gap.

Review architecture boundaries and dependencies

For every component, ask what state it reads or changes, who operates it, and what happens if it is unavailable or changes. In particular, identify whether the design relies on wallets, RPC access to a node, indexing services, oracles, bridges, or other contracts. An RPC interface can connect an application to a node to read blockchain data and send transactions, but the endpoint’s supported methods, retained data, limits, and current view of chain state can differ. Ask the proposal to name the required connection and its assumptions without treating a provider or endpoint as part of the blockchain protocol itself.

If a contract calls or reuses another on-chain component, request the dependency’s identity and role in the design. Public interfaces make contracts composable, but each dependency adds behavior, availability, upgrade, permission, and economic assumptions that belong in the project’s risk record.

A provider should also distinguish protocol behavior from application and operator responsibilities. For example, governance may involve proposals, voting, delegation, membership rules, or multisignature execution; the actual rights and execution paths depend on the project’s contracts and policies. If the dapp includes governance, ask for a written explanation of who can propose, approve, and execute changes, and how those responsibilities are represented in the design. source

A useful architecture review asks the provider to explain the failure path as well as the normal path. What does the user see if an external service is unavailable? Which component can be upgraded or administered, and by whom? How are changes to an external dependency identified and assessed? The answers should appear in diagrams or documentation, not only in a verbal presentation.

Ask for verifiable testing and security evidence

Request a test plan that maps requirements and user flows to checks and results. Ask which components and behaviors were covered, which were not, and what artifacts are available for review. The evidence should let a technical reviewer trace a stated requirement to a test or other recorded check; a general statement that “testing was completed” does not establish what was examined.

For any claimed independent security review, request the review’s scope, date, findings, and limitations. Ask how findings were classified, which remain unresolved, and whether the reviewed code changed afterward. A review describes work performed within a defined scope; it does not guarantee that the system is secure. Likewise, tests can support specific claims about examined behavior but should not be presented as eliminating risk.

Separate evidence from assurances. A test report, source revision identifier, or review document can be inspected. A broad label such as “audited” is not enough unless the provider identifies what was reviewed and how that work relates to the current deliverables. Record any missing materials as an open item rather than treating them as proof of failure or success.

Check handoff, operations, and acceptance criteria

Before accepting a proposal, ask for a handoff checklist that states what the organization receives and what it must operate. Depending on agreed scope, this may cover source code, build instructions, architecture and contract documentation, access-control responsibilities, and ownership or licensing terms for review. Confirm that each item has an acceptance check, such as whether documentation corresponds to the delivered version or whether the organization can reproduce the stated build process.

Assign post-handoff responsibilities by name or role: deployment, monitoring, incident response, maintenance, and dependency updates. If these tasks are outside the provider’s scope, the proposal should say so and identify what information the organization needs to take them over. Treat unresolved risks and operating assumptions as handoff artifacts, not as informal notes.

A final scope review can use four questions for each deliverable: What exactly will be produced? What evidence will show it meets the agreed requirement? Which dependencies or assumptions affect it? Who is responsible after delivery? If the proposal cannot answer those questions clearly, request revisions before comparing proposals or accepting the work. This process assesses scope and evidence; it does not determine a project’s legal or regulatory status, tax treatment, availability, fees, recovery prospects, or compliance obligations.

Sources and references