Frequently asked questions about Account Abstraction
How can I get push notifications for mined userOperations?
Follow the guide on using custom webhooks to get real time alerts and receipts for mined userOperations.
What is a dummy signature and why do I need it for certain endpoints?
Our APIs are compatible with any type of smart account. This means regardless of the smart account you're using, our endpoints will work with it. However, different smart accounts have unique ways of signing transactions, known as signature patterns. A dummy signature is essentially a template or example signature that aligns with the signature pattern of your specific account type.
For certain API endpoints, particularly those involved in gas estimation, a dummy signature is required in the request. This is because these endpoints need to simulate or estimate the transaction without actually executing it, and the dummy signature helps in this process. For more information, consult the docs for your specific account implementation. The following endpoints require a dummy signature for gas estimation:
- eth_estimateUserOperationGas
- alchemy_simulateUserOperationAssetChanges
- alchemy_requestGasAndPaymasterAndData
If your account type is either LightAccount or SimpleAccount, you can use the provided dummy signature:
0xfffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c