> For the complete documentation index, see [llms.txt](https://timelessx.gitbook.io/timeless-x/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101.md).

# Account Abstraction 101

- [Glossary](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/glossary.md)
- [What is an account?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-an-account.md)
- [What is Externally Owned Account (EOA)?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-externally-owned-account-eoa.md)
- [What is Smart Contract Account (SCA)?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-smart-contract-account-sca.md)
- [What is UserOperation?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-useroperation.md)
- [What is Bundler?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-bundler.md)
- [What is EntryPoint?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-entrypoint.md)
- [What is Aggregator?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-aggregator.md)
- [What is Paymaster?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-paymaster.md)
- [What is ERC-4337?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-erc-4337.md)
- [What is EIP-1271?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-eip-1271.md)
- [What is ERC-6900?](https://timelessx.gitbook.io/timeless-x/smart-wallet/account-abstraction-101/what-is-erc-6900.md)