> ## Documentation Index
> Fetch the complete documentation index at: https://aomi.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# Account abstraction
> Learn how Aomi uses EIP-4337 and EIP-7702 to batch EVM calls and sponsor network gas without taking custody.
Account abstraction gives an EVM wallet a programmable execution layer. Aomi
packages an approved batch into one operation and requests network-gas
sponsorship before submitting it through an account-abstraction provider. The
wallet owner remains the source of signing authority. Aomi checks the wallet's
current policy before every commit.
Use this page to compare EIP-4337 with EIP-7702 and understand which address
executes a transaction. The execution sequence also shows how a sponsored
operation moves from simulation to confirmation. Both standards follow Aomi's
[transaction pipeline](/docs/concepts/transaction-pipeline): build, simulate, sign,
and broadcast.
## What account abstraction changes
A standard wallet signs and submits an ordinary transaction from its externally
owned account. Account abstraction turns the same intent into a programmable
operation that can contain several ordered calls. It can also separate the
wallet that authorizes the operation from the account that executes it.
| Execution path | Address that executes | Who submits | Network gas |
| --------------- | --------------------------------------------------- | --------------------------- | --------------------- |
| Standard wallet | Your externally owned account | Your wallet | Paid by your account |
| EIP-4337 | A separate smart account owned by your wallet | Aomi through an AA provider | Sponsorship requested |
| EIP-7702 | Your existing EOA with delegated smart-account code | Aomi through an AA provider | Sponsorship requested |
Manual wallets remain on the standard path. Aomi currently uses its sponsored
account-abstraction broadcaster with delegated signing, not with a manual
wallet prompt. If an App requires sponsored account abstraction and that path
is unavailable, Aomi stops instead of silently submitting an unsponsored
transaction.
## Roles in account abstraction
Account abstraction introduces three roles that may refer to different
addresses or services. The **owner** controls the wallet and grants signing
authority. The **signer** produces the operation signature under the wallet's
active policy. The **executor** is the onchain account whose balance and state
the calls use.
```mermaid theme={null}
flowchart LR
O["Owner wallet
controls authorization"] --> P["Wallet policy and
active signing grant"]
P --> A["Authorized signer
signs the prepared operation"]
A --> E4337["EIP-4337
separate smart account executes"]
A --> E7702["EIP-7702
owner address executes"]
E4337 --> U["One ordered operation"]
E7702 --> U
U --> S["Sponsor network gas"]
S --> C["Broadcast and confirm"]
```
The owner and executor usually have different addresses with EIP-4337. The
owner's EOA is also the executor with EIP-7702, where it runs delegated
smart-account code for the operation. This distinction affects where assets
must be held and which address a protocol sees as the caller.
## Execution lifecycle
Aomi prepares account-abstraction execution only after the complete batch has
passed simulation. At commit time, it resolves the wallet's account-abstraction
mode and rechecks signing authority. It then asks the provider to prepare a
sponsored operation. Submission remains blocked until Aomi verifies the
expected owner signature.
```mermaid theme={null}
sequenceDiagram
autonumber
actor User
participant Surface as Portal, widget, or client
participant Aomi
participant Signer as Authorized wallet signer
participant Provider as AA provider
participant Chain
User->>Surface: Start an onchain action
Surface->>Aomi: Commit the simulated batch
Aomi->>Aomi: Recheck wallet policy and signing grant
Aomi->>Provider: Prepare and sponsor the operation
Provider-->>Aomi: Return the signable operation
Aomi->>Signer: Request the owner signature
Signer-->>Aomi: Return the owner signature
Aomi->>Aomi: Verify the signer and batch
Aomi->>Provider: Submit the signed operation
Provider->>Chain: Broadcast
loop Until a terminal status
Aomi->>Provider: Check operation status
Provider-->>Aomi: Pending, confirmed, or failed
end
Aomi-->>Surface: Return the receipt or failure
Surface-->>User: Show the final status
```
The signer in this sequence is a supported wallet provider acting under a live,
revocable grant. It is not an Aomi-held private key. A manual or client-held
key follows the standard wallet route, where the wallet or client signs and
submits the transaction itself.
## EIP-4337 smart accounts
EIP-4337 uses a dedicated smart account whose owner is your linked wallet. The
smart account is the executor, so it holds the assets and allowances used by
the batch. Your owner wallet authorizes the prepared UserOperation. A bundler
then submits it for execution.
Several calls can be encoded in one UserOperation. This is useful for flows
such as approval followed by swap, because the order that passed simulation is
preserved through signing and execution. Aomi verifies that the signature
matches the configured owner before the operation can be submitted.
## EIP-7702 delegated accounts
EIP-7702 lets an existing EOA use smart-account behavior without moving assets
to a separate account. The same address remains the owner and executor.
Delegated code provides batching and account-abstraction execution, so
protocols continue to see the user's existing address as the caller.
The first operation on a compatible account may require an additional
authorization that establishes the delegation. Later operations can use the
delegated account behavior while the authorization remains valid. Aomi still
prepares, simulates, and verifies the complete operation before broadcast.
## Gas sponsorship
For its account-abstraction broadcast path, Aomi requests sponsorship while the
provider prepares the operation. Sponsorship covers the network gas required
to execute the operation. It does not pay the value being transferred, a
protocol's trading fee, an App's tool fee, or an
[outcome fee](/docs/concepts/payments#outcome-fees).
Sponsorship is part of the prepared operation rather than a rebate applied
after broadcast. If the provider cannot produce a valid sponsored operation,
Aomi returns an error before signing or submission. This keeps the displayed
terms aligned with the operation that reaches the chain.
## Signing authority
Account abstraction changes transaction packaging, not wallet ownership. Aomi
evaluates the selected wallet's signing policy at commit time and requires the
matching signing capability. A delegated grant must cover that exact wallet,
and a returned signature must recover to the expected owner.
| Wallet state | Result |
| --------------------------------------------- | ------------------------------------------------------------------ |
| **Auto** with a valid delegated grant | A supported provider may sign the prepared AA operation. |
| **Manual** | Your wallet handles a standard transaction request and submits it. |
| **Accept transactions** | Your key-holding client signs and submits through the client path. |
| **Locked**, read-only, missing, or mismatched | Aomi produces no signature and stops the commit. |
Revoking a delegated grant removes the signing capability for the next
operation. Changing the wallet policy to **Manual** or **Locked** also blocks
delegated execution. See the [permission model](/docs/security/permission-model) for
the checks that apply before any signing request is released.
## Batches and outcome fees
Account abstraction preserves the exact order of the simulated batch. An
approval, swap, bridge, and supported outcome-fee transfer can be included in
one prepared operation, provided every call succeeds during simulation. Aomi
does not add, remove, or reorder calls after the operation has been signed.
An outcome fee settles with the onchain action and is different from an x402
tool fee. Aomi adds the supported fee call before account-abstraction
preparation, which allows the complete economic result to be simulated and
authorized together. Read [Fees](/docs/concepts/payments) for the full distinction.
## Confirmation and failures
After submission, Aomi tracks the operation until the provider reports a
terminal result. A confirmed operation includes its onchain receipt and
transaction hash. A rejected signature, failed sponsorship request, reverted
operation, or expired authorization produces a failure without retrying through
a weaker execution path.
The portal, widget, and custom clients receive the same final status from Aomi.
These surfaces display the result without reconstructing or modifying the
sponsored operation. Preparation and authorization therefore stay attached to
the same record through confirmation.
## Current support
Use account abstraction only for EVM networks, wallet providers, and Apps that
Aomi currently marks as compatible. The sponsored path requires a configured
AA account, a supported signing provider, a live delegated grant, and available
sponsorship. A missing requirement stops the operation before broadcast.
Apps that do not require account abstraction can continue to use standard
wallet execution. That path remains appropriate when you want to review every
transaction in a self-custody wallet or submit from your own key-holding
client. The [EVM page](/docs/concepts/chains/evm) lists the networks available to
the current client.
## Related concepts
Follow the complete build, simulate, sign, and broadcast lifecycle.
Understand linked wallets, signing policies, and delegated grants.
See how Aomi checks authority and fails closed before signing.
Review supported chains, simulation behavior, guards, and typed data.
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