## Components - Smart Accounts - Sends UserOperation - Contains all the same fields as a transaction (to, calldata, maxFeePerGas, maxPriorityFeePerGas, nonce, signature) and others. The signature is defined by the Smart Account contract and not the protocol - Entrypoint Contract - Executed bundles of UserOperations - Bundlers - Handle UserOperations by creating a valid handleOps transaction in the Entrypoint contract - By being a block builder - Work with a block builder like mev-boost or [[ERC-7732: Proposer-Builder Separation]] - Use the experimental RPC API defined in [ERC-7796](https://eips.ethereum.org/EIPS/eip-7796) for conditional pre execution transaction inclusion https://docs.optimism.io/stack/features/send-raw-transaction-conditional - Paymaster as defined in [[ERC-7677: Paymaster Web Service Capability]] - Decentralized permissionless P2P network where bundlers exchange UserOperations as defined in [[7562: AA Validation Scope Rules]]