> ## Documentation Index
> Fetch the complete documentation index at: https://docs.arc.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Account abstraction

> Account abstraction providers on Arc, offering SDKs, paymasters, and smart wallet infrastructure for building flexible AA flows.

Account abstraction (AA) replaces externally owned accounts (EOAs) with smart
contract wallets that support programmable transaction validation, gas
sponsorship, and batched operations. Arc supports the ERC-4337 standard, so you
can use any compatible bundler, paymaster, or SDK from the providers below.

## Providers

### [Biconomy](https://www.biconomy.io)

Account abstraction toolkit offering modular smart accounts, paymasters, and
bundlers as a service to simplify the user experience.

### [Blockradar](https://blockradar.co)

Infrastructure and APIs for smart account management and transaction bundling,
enabling scalable AA flows with minimal setup.

### [Circle Wallets](https://developers.circle.com/wallets)

End-to-end platform for creating and managing secure Arc wallets and
cryptographic keys. Supports ERC-20, ERC-721, and ERC-1155 standards.

### [Crossmint](https://www.crossmint.com)

Wallet-as-a-service and AA capabilities to onboard users with email or
OAuth-based accounts.

### [Dynamic](https://www.dynamic.xyz)

Identity and wallet orchestration platform with native ERC-4337 support,
enabling passkey wallets and flexible signer management.

### [Para](https://getpara.com)

Wallet and authentication suite for fintech and crypto applications, enabling
flexible wallet management and transaction signing.

### [Pimlico](https://pimlico.io)

Bundler and paymaster infrastructure for ERC-4337 smart accounts, offering
sponsored transactions and reliable relay services.

### [Privy](https://www.privy.io)

APIs and SDKs for embedded wallets and user authentication. Onboard users with
email or social logins while maintaining full control over key management.

### [Thirdweb](https://portal.thirdweb.com/wallets)

Full-stack toolkit with built-in AA support, SDKs, and a managed smart wallet
layer.

### [Turnkey](https://docs.turnkey.com/reference/aa-wallets)

Programmable key infrastructure for embedded wallets, transaction signing, and
onchain automation with policy-based controls.

### [Zerodev](https://zerodev.app)

Developer SDK for deploying and managing ERC-4337 smart accounts, with built-in
session key and bundler support.

<Info>
  Arc's account abstraction ecosystem is modular — you can mix SDKs, paymasters,
  and bundlers from multiple providers to design your smart account
  architecture.
</Info>