A Practical Look at EIP-7702 and Wallet Delegation

EIP-7702 introduces a powerful new capability to Ethereum wallets, but it also creates a visibility problem that most users are not yet equipped to handle. 

To help address this, we built an EIP-7702 Delegation Checker App, a free and open-source web app that lets anyone check whether an Ethereum address has been delegated under EIP-7702, across multiple EVM chains, in one place.

This post explains what EIP-7702 actually does, why delegation visibility matters, and how users and builders can think about wallet safety as account abstraction becomes more common.

Key Takeaways

• EIP-7702 represents the next generation of account abstraction, enabling Externally Owned Accounts (EOAs, like MetaMask) to execute with associated smart contract logic via delegation

• The EIP-7702 Delegation Checker App is an open-source, frontend-only application that lets users verify EOA delegation status across multiple EVM chains

• Delegation is powerful, but visibility is critical for trust and safety

• Before the Delegation Checker App was released, users relied on manual explorer checks or custom code

• The ecosystem still needs better revocation support across wallets

What Is EIP-7702?

EIP-7702 is often described as the next step after ERC-4337, giving EOAs superpowers.

Until EIP-7702, users had to pick: keep your EOA with a single private key, or migrate to an account abstraction smart wallet such as those built on EIP-4337. That migration typically meant adopting a new wallet address and new infrastructure.

EIP‑7702 removes that fork in the road. It lets an EOA "borrow" a piece of smart contract code, which means an address can be used both as an EOA, as well as a smart wallet.

In practice, this means:

• You keep your existing wallet and address

• Your EOA can execute programmable contract logic via delegation

• You can batch multiple calls

• You can enable gas sponsorship

• You can enforce custom spending or authorization rules

Delegation and the Visibility Gap

EIP-7702 introduces a key concept called delegation.

Delegation means attaching smart-contract source code to an EOA. When a wallet is delegated:

• The EOA becomes associated with smart contract code

• That code can execute actions on behalf of the account

• The user is trusting the delegate contract to behave correctly

This doesn’t mean EIP-7702 is unsafe, but it is a different permission model than signing a one-time transaction. Delegation is closer to installing software than approving a payment.

The problem we saw was that there was no easy way to check delegation across chains.

Before dedicated tooling existed, you could piece it together by:

• Visiting multiple block explorers (if they even show delegation clearly), or

• Writing your own code to query many blockchain RPC endpoints and check for code at the address / related signals

These methods, however, were time-consuming for regular users and repetitive work for developers, so we built a tool that we wished existed.

The EIP-7702 Delegation Checker

Enter the EIP-7702 Delegation Checker App, a lightweight web app that answers a simple question across many networks:

“Has this address been delegated, and if so, on which chains, and to what?”

Users paste an address or ENS name, click a button, and immediately see their wallet’s EIP-7702 delegation status across supported EVM chains.

No wallet connection is required.

How the Checker Works

A typical user flow looks like this:

1. Open the checker

2. Enter an Ethereum address or ENS name

3. Click Search

4. Review results across supported chains:

• Not detected = no delegation found

• Not supported yet = chain not fully supported

• Delegated - provides links to:

  • The delegate smart wallet contract

  • The original EOA address

From there, the user may take actionable next steps based on their outcome:

What the Checker Is Used For

The checker helps users:

• Confirm expected delegations

• Identify unexpected or forgotten delegations

• Flag delegate contracts that warrant further investigation

• Revoke delegations when supported

• Gain peace of mind through simple visibility

A healthy wallet typically shows no delegation or delegation to a well-known smart wallet implementation. This is an example of a “healthy” wallet with expected delegations:

Delegate Signals and Safety Indicators

The Delegation Checker surfaces visual safety indicators to help users quickly interpret what they are seeing.

Each detected delegation is accompanied by a signal:

• ✅ Green check mark: The delegate is recognized as a known good implementation (for example, a reputable smart wallet such as Ambire).

• ❓ Question mark: The delegate is unknown. This does not automatically mean it is malicious, but it warrants further investigation.

• ⚠️ Orange triangle: The delegate is associated with known compromised or malicious activity (such as hacker-controlled addresses). This may indicate a potential private key compromise.

These indicators are designed to assist judgment, not replace it.

A compromised wallet may have delegations that appear like this:

Technical Architecture

The app is intentionally built with simple functions:

• Frontend-only

• Runs entirely in the browser (web UI)

• No backend or external dependencies

• No wallet data is sent upstream

• Queries multiple chains and shows delegation status in one place

• Allows users to revoke access on their delegated wallets (support varies across wallet apps)

• Source code is fully inspectable

Connecting your wallet is optional, and it simply pulls the active wallet address into the search box. The app is safe, being a simple frontend with inspectable source code. The constrained design is deliberate. Adding history, indexing, or analytics would require backend infrastructure and fundamentally change the scope.

Revocation Remains a Challenge

The checker offers a revoke action, but support for revoking arbitrary delegations is inconsistent and varies by wallet.

Users should ask their wallet providers to add this support, since many wallets do not support the transaction needed to revoke arbitrary EIP-7702 delegations. Unfortunately, users may not be able to revoke if: 

• The wallet has bugs

• The wallet was uninstalled

• Support was discontinued

• They delegated long ago and forgot which tool was used

This is a real UX gap. Revocation should be a standard wallet safety feature, not a niche developer operation.

Common Misconceptions About EIP-7702

A common misconception is that EIP-7702 is hard to use.

In practice, the protocol is simpler than ERC-4337. What is missing today is tooling that makes delegation, revocation, and edge cases understandable to everyday users.

The most interesting engineering constraint wasn’t performance or scaling, but comprehension.

EIP-7702 is still new enough that:

• Documentation is sparse beyond the spec itself

• Many posts are high-level

• Real edge cases (revocation, authorization signing failures, chain differences) aren’t always spelled out

Daily user activity on eip7702.app is a strong signal that EIP-7702 adoption is real and that “visibility tooling” is in demand.

https://x.com/JeffInTokyo/status/1967259513519796358

Important Limitations

It is important to note that the Delegation Checker cannot:

• Recover funds after a private key compromise

• Guarantee that a delegate contract is safe

• Display full historical delegation activity without backend indexing

If you believe your private key is compromised, the correct response is to secure unaffected assets and migrate to a new setup.

What the Ecosystem Needs Next

For protocols building wallets, explorers, or Dapps that involve EIP-7702, consider:

• Making delegation visible by default

• Making revocation reliable and consistent

For users experimenting with account abstraction:

• Periodically check where your address is delegated

• Prefer reputable smart wallet implementations

• Act quickly if something looks off

And for us at Curvegrid, there are clear directions the checker could evolve in the future:

• Improved revocation UX as wallet support matures

• Expanded chain coverage

• More transparent delegate reputation signals

• Optional history mode with clear trade-offs

Even without those expansions, The EIP-7702 Delegation Checker App’s value proposition is evergreen: users want to know what their wallet is “connected to,” across chains, without hassle.