> For the complete documentation index, see [llms.txt](https://docs.vanarchain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vanarchain.com/builders/for-developers/build-with-thirdweb/connect.md).

# Connect

Seamlessly onboard and authenticate users in your applications.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Sign-in</strong></td><td>Flexible user sign-up flow with wallet and social sign-in methods</td><td><a href="/files/PmKKkh7FjOQjgZFr72N0">/files/PmKKkh7FjOQjgZFr72N0</a></td><td><a href="https://portal.thirdweb.com/wallets/connect">https://portal.thirdweb.com/wallets/connect</a></td></tr><tr><td>Account Abstraction</td><td>Complete toolkit for Account Abstraction</td><td><a href="/files/YixdVruzSvUSvGsfMHnz">/files/YixdVruzSvUSvGsfMHnz</a></td><td><a href="https://portal.thirdweb.com/wallets/smart-wallet">https://portal.thirdweb.com/wallets/smart-wallet</a></td></tr><tr><td><strong>In-App Wallet</strong></td><td>Email &#x26; social login wallets for your customers</td><td><a href="/files/oSUNx4baxtY8YOuqC6ke">/files/oSUNx4baxtY8YOuqC6ke</a></td><td><a href="https://portal.thirdweb.com/wallets/embedded-wallet/overview">https://portal.thirdweb.com/wallets/embedded-wallet/overview</a></td></tr><tr><td><strong>Auth</strong></td><td>Authenticate users with their wallets</td><td><a href="/files/1DTmtej4NIsl7tlc5vrA">/files/1DTmtej4NIsl7tlc5vrA</a></td><td><a href="https://portal.thirdweb.com/wallets/auth">https://portal.thirdweb.com/wallets/auth</a></td></tr><tr><td><strong>Pay</strong></td><td>Easily integrate cross-chain crypto purchases for your users</td><td><a href="/files/hsaB1BcxWlj3VFdogsBe">/files/hsaB1BcxWlj3VFdogsBe</a></td><td><a href="https://portal.thirdweb.com/connect/pay/buy-with-crypto">https://portal.thirdweb.com/connect/pay/buy-with-crypto</a></td></tr><tr><td><strong>Blockchain API</strong></td><td>Performant, and reliable blockchain API</td><td><a href="/files/NTRxqotVSUnkAWRbz1qf">/files/NTRxqotVSUnkAWRbz1qf</a></td><td><a href="https://portal.thirdweb.com/connect/blockchain-api">https://portal.thirdweb.com/connect/blockchain-api</a></td></tr></tbody></table>