AA-429: Create ERC-5792 "capabilities" ERC for Account Abstraction

ERCS/erc-xxxx.md

@@ -0,0 +1,201 @@
+---
+eip:
+title: Set of Wallet Capabilities for Account Abstraction Applications
+description: A way for apps and Account Abstraction wallets to communicate more advanced parameters of Account Abstraction operations
+author: Yoav Weiss (@yoavw), Alex Forshtat (@forshtat), Dror Tirosh (@drortirosh), Shahaf Nacson (@shahafn)
+discussions-to:
+status: Draft
+type: Standards Track
+category: ERC
+created:
+requires: 5792, 7702
+---
+
+## Abstract
+
+[EIP-5792](./eip-5792) defines a baseline JSON-RPC API for a communication between wallets and dapps.
+With EIP-5792, apps and wallets can communicate about any advanced features using "capabilities" - extensions
+to the base protocol that must be defined in separate documents.
+
+This proposal defines a set of "capabilities" the wallets may want to implement in order to provide a
+comprehensive support for Account Abstraction.
+
+## Motivation
+
+## Specification
+
+### Shared configuration
+
+All actions in Account Abstraction within the context of EIP-5792 must be done on a single chain and atomically.
+This means all requests to the `wallet_sendCalls` methods MUST be done:
+
+1. With the `atomicBatch` capability enabled
+2. With the `chainId` set to the same value in all calls
+
+### Static Paymaster Configuration Capability
+
+Note that use of Paymasters managed by a "paymaster web service" is described in [ERC-7677](./eip-7677).
+
+Identifier:
+
+`staticPaymasterConfiguration`
+
+Interface:
+
+```typescript
+type StaticPaymasterConfigurationCapabilityParams = Record<
+  `0x${string}`, // Chain ID
+  {
+    paymaster: string;
+    paymasterData: string;
+    paymasterValidationGasLimit: `0x${string}`;
+    paymasterPostOpGasLimit: `0x${string}`;
+  }
+>;
+```
+
+### On-chain Query Paymaster Configuration Capability
+
+Identifier:
+
+`onChainQueryPaymasterConfiguration`
+
+Interface:
+
+```typescript
+type OnChainQueryPaymasterConfigurationCapabilityParams = Record<
+  `0x${string}`, // Chain ID
+  {
+    target: `0x${string}`, // contract to query for Paymaster configuration
+    context: `0x${string}`, // hex-encoded byte array to pass to the configuration provider
+  }
+>
+```
+
+We then define the following Solidity interface:
+
+```solidity
+
+    struct PaymasterConfiguration {
+        address paymaster;
+        bytes paymasterData;
+        uint256 paymasterValidationGasLimit;
+        uint256 paymasterPostOpGasLimit;
+    }
+
+interface IPaymasterConfigurationResolver {
+    function getPaymasterConfiguration(bytes operation, bytes context) returns (PaymasterConfiguration);
+}
+
+```
+
+The wallet MUST perform an ABI-encoding of the entire `operation` object and make a view call
+to the `getPaymasterConfiguration` function of the `target` address.
+
+If the view call fails or returns an invalid data, the `wallet_sendCalls` method must fail and return with an error.
+
+### Validity Time Range Capability
+
+Identifier:
+
+`validityTimeRange`
+
+Interface:
+
+```typescript
+type ValidityTimeRangeCapabilityParams = Record<
+  `0x${string}`, // Chain ID
+  {
+    validAfter: `0x${string}`, // operation valid only after this timestamp, in seconds
+    validUntil: `0x${string}`  // operation valid only before this timestamp, in seconds
+  }
+>
+```
+
+The wallet must then verify the time range [`validAfter`..`validUntil`] is valid and present it to the
+user in a human-readable way for confirmation as part of the transaction information.
+
+### Multidimensional Nonce Capability
+
+Identifier:
+
+`multiDimensionalNonce`
+
+Interface:
+
+```typescript
+type MultiDimensionalNonceCapabilityParams = Record<
+  `0x${string}`, // Chain ID
+  {
+    nonceKey: `0x${string}`,
+    nonceSequence: `0x${string}`
+  }
+>
+```
+
+For Smart Contract Accounts that support multidimensional nonce values,
+the wallet must specify these parameters during the actual on-chain execution of the batch.
+
+### Account Abstraction Gas Parameters Override Capability
+
+Identifier:
+
+`accountAbstractionGasParamsOverride`
+
+Interface:
+
+```typescript
+type AAGasParamsOverrideCapabilityParams = Record<
+  `0x${string}`, // Chain ID
+  {
+    preVerificationGas?: `0x${string}`,
+    verificationGasLimit?: `0x${string}`,
+    callGasLimit?: `0x${string}`,
+    paymasterVerificationGasLimit?: `0x${string}`,
+    paymasterPostOpGasLimit?: `0x${string}`,
+    maxFeePerGas?: `0x${string}`,
+    maxPriorityFeePerGas?: `0x${string}`
+  }
+>
+```
+
+Notice that all fields in the `AAGasParamsOverrideCapabilityParams` are optional.
+Only the values that callers want to override must be provided.
+
+In case `paymasterVerificationGasLimit` or `paymasterPostOpGasLimit` are provided,
+wallets should warn the users about this happening but use these values instead of
+the ones generated by any other capability.
+Wallets may choose to reject such configurations or request the user input in this case.
+Such a combination of features is only expected to be used in development and is very risky to use in production.
+
+### Set Externally Owned Account Code Capability
+
+This capability is designed to use with [EIP-7702](./eip-7702) transactions.
+
+Identifier:
+
+`setCodeForEOA`
+
+Interface:
+
+```typescript
+type SetCodeForEOACapabilityParams = Record<
+  `0x${string}`, // Chain ID
+  {
+    codeAddress:   `0x${string}`, // implementation code address
+  }
+>
+```
+
+Wallets should generate an EIP-7702 compatible transaction that sets a code of a `from` EOA address
+to the code of `codeAddress` specified in the request.
+
+## Rationale
+
+## Reference Implementation
+
+## Security Considerations
+
+## Copyright
+
+Copyright and related rights waived via [CC0](../LICENSE.md).