DeFi projects frequently focus their assessments on legal risks associated with protocols and on-chain mechanics, such as asset movements, control mechanisms, storage solutions, and potential updates. While this analysis is crucial, it remains incomplete. Even if a protocol operates independently, the frontend can introduce a distinct set of regulatory challenges, sometimes being treated as a separate service altogether.

In a recent article for ForkLog, crypto lawyer and partner at Aurum, Sergey Ostrovsky, discusses scenarios where a DeFi frontend may be regulated as an independent product and outlines strategies to mitigate associated risks.

The Interface as a Service

Frontends can vary significantly in terms of legal complexity and risk exposure. For instance, a blockchain explorer or a read-only interface represents one level of complexity, while an application that assists users in selecting financial products, initiates transactions, and earns fees from these operations represents a much different scenario.

Although both can technically be categorized as frontends, the former leans toward being a "neutral display," whereas the latter resembles a professional service. The overall complexity largely depends on the type of services the frontend operator offers to users.

The legal intricacies increase when the frontend facilitates access to securities (including tokenized ones), derivatives, or regulated instruments. In such cases, traditional financial legislation may apply rather than crypto-specific regulations.

For regulators, it does not matter if the product is labeled as a DeFi frontend; what matters are the actual functions it performs. The more actively the operator is involved in helping users select financial products, execute transactions, and earn income, the higher the likelihood that the interface will be seen as a standalone regulated service.

Four Areas of Risk

Typically, a frontend has an operator overseeing its functionality, including a team or contributors managing the domain and hosting, updating the site, determining which pools or tokens are accessible via the interface, and setting API configurations. Identifying and structuring the operator is a key legal challenge.

However, merely having control does not automatically subject the interface to regulation. Four primary areas can present legal risks.

Product Architecture

Evaluating the user journey is a good starting point: what tasks the interface performs for users, what information it displays, how options and default values are selected, and how transactions are prepared and signed, among other factors. It's essential to realistically assess the level of control and access that the team has, including fallback mechanisms and the ability to implement changes. For instance, risks significantly increase if the frontend offers recommendations regarding crypto assets, manages users' funds, or stores their private keys.

The regulatory risk can also vary based on the types of assets the interface supports. Risks escalate if any of those assets include securities or other regulated financial instruments, as traditional investment laws may come into play.

Fees

Charging a fee does not automatically mean a product falls under regulatory scrutiny. A paid frontend does not necessarily become a regulated intermediary, nor does a free one escape risks. However, the economic model reveals the operator's actual role and can influence how the product is classified.

It is crucial to understand who receives compensation, what it is for, and whether its size depends on the chosen asset, transaction route, platform, transaction volume, user acquisition, or revenue-sharing agreements. A transparent flat fee for users presents one risk profile, while fees tied to recommending specific pools or platforms present another.

Access

Access to the protocol can be open to everyone without requiring permission. However, the frontend operator can restrict the user base and set access conditions.

The regulatory status of the frontend largely hinges on the countries in which it is available and the location of the operator. For example, European regulations will not apply if it does not serve users from the EU/EEA and the operator is located outside the European Union. Additionally, it is important to consider sanctions and AML risks.

Thus, a well-thought-out access policy, including geographic restrictions and anti-money laundering checks, can significantly reduce regulatory risks. Merely having restrictions specified in user agreements and other documents is not enough; regulators will look at the practical availability of the service, the languages it operates in, where it advertises, which regional partners it collaborates with, and the target audience for its public statements, registration procedures, and marketing campaigns.

Communication

The legal assessment is influenced by the content of the website and documentation, communications from the founders, customer support responses, community announcements, and advertising campaigns involving influencers. Phrases like "best yield," "recommended," "safe," "low-risk," or "optimal" may be interpreted not as neutral product descriptions but as recommendations to users. A single disclaimer will not alter this situation if the interface and advertising effectively push users toward specific choices.

These four factors are common across regulatory approaches, although specific requirements differ by country.

Jurisdictional Insights

Legal evaluation criteria vary by jurisdiction, yet regulators share a general approach: they analyze the product's structure, the operator's role, and the entire user journey—from entering the interface to completing a transaction.

The MiCA regulation in the European Union governs service providers related to crypto assets. Its exhaustive list of such services is detailed in Article 3, Part 1, Section 16 of the regulation. If a frontend is used to provide any of these services to users in the EU/EEA, obtaining CASP authorization in one of the EU countries is necessary.

In the United States, specialized crypto regulation is still pending, which means the primary risk is that the frontend and related activities may fall under traditional regulatory frameworks. Recent clarifications from U.S. regulators illustrate why the mechanics of the product take precedence.

In March 2026, the CFTC published a no-action letter regarding Phantom. The Commission confirmed that the company could provide access to regulated derivatives through its own interface—a non-custodial wallet—without requiring authorization (license), provided certain conditions are met, including refraining from holding client funds, adequately disclosing risks, and adhering to standards for public communication and marketing.

The U.S. Securities and Exchange Commission (SEC) also issued a clarification in March regarding blockchain interfaces that provide access to "crypto assets—securities." According to the SEC's position, broker-dealer regulations do not apply if, among other things, users can modify transaction parameters, see alternative execution methods, and filtering is available based on objective criteria (such as alphabetically, by price, speed), but it should not advise on specific options or label one as "best"; proper disclosure of mechanics, risks, and interests is required.

In the UK, comprehensive crypto regulation is also still forthcoming, expected in 2027. Currently, the FCA is particularly focused on public communications regarding crypto assets. The agency states that the promotion of financial instruments applies to all companies, including foreign ones, promoting digital assets to consumers in the UK. Communication channels include websites, mobile applications, social media, and online advertising.

Checklist for Founders

As established, a disclaimer at the bottom of the website won't suffice if the frontend is a regulated service. Founders need to focus on architecture and communication.

Minimum requirements include:

  1. Analyze the entire user journey—from operation selection to final execution: obtaining instructions, choosing routes, default parameters, preparing and processing transactions, integrations.
  2. Define the function of the frontend: does it only display information, serve as a non-custodial wallet, or assist users in selecting and executing operations? The product's structure, fee collection procedures, interface content, and its description in documentation and advertising should not contradict this function.
  3. Identify jurisdictional limitations: where is the product available or unavailable, and how are these limitations implemented? Access, onboarding, support, documentation, and marketing should maintain a consistent stance and align with the categories of users the project is prepared to serve.
  4. Review supported assets: pay special attention to derivatives, leveraged trading, tokenized securities, and other regulated instruments.
  5. Revisit the fee structure: who pays the fee, under what circumstances it arises, how its amount is determined, whether this model creates conflicts of interest for the operator, and how the fee is disclosed to the end user.

Another crucial element of structuring involves creating an operator company for the interface. When selecting the type of company and jurisdiction for incorporation, it is vital to consider local regulations, as they may apply regardless of whether you serve local users.

Furthermore, it is important to maintain documentation. Internal policies, external communications, routing parameters, the website, documentation, disclaimers, contracts, and other records can validate how the frontend operates in practice.

The Main Risk—Inconsistency

The frontend is not merely a website through which users interact with the protocol; it establishes the access order to the product, revenue generation methods, control measures, and the nature of the project's interaction with users. Therefore, the interface's structure should be factored into the overall regulatory compliance strategy.

Additionally, accurately describing the role and function of the interface is crucial. A risky middle ground is occupied by projects that wish to gain commercial benefits from a controlled frontend while simultaneously relying on the legal rhetoric of "complete decentralization."