> For the complete documentation index, see [llms.txt](https://docs.baas.sh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.baas.sh/readme.md).

# Welcome to BaaS

**BaaS is the backend platform for blockchain apps.** It gives you the building blocks to add wallets, authentication, and onchain features to your product, so you can focus on what you're building instead of the infrastructure.

BaaS is made of several products that work together. Each one has its own documentation below.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>BaaS SDK</strong></td><td>Authenticate your users from any web app with passkeys or external wallets. <strong>Docs available.</strong></td><td><a href="/pages/3gboG45cZRf3mxRXWeyh">/pages/3gboG45cZRf3mxRXWeyh</a></td></tr><tr><td><strong>BaaS CLI</strong></td><td>Deploy your Foundry smart contracts and register them with BaaS in one command. <strong>Docs available.</strong></td><td><a href="/pages/lZY8tt0AH4jyrZYosWDK">/pages/lZY8tt0AH4jyrZYosWDK</a></td></tr><tr><td><strong>BaaS Dashboard</strong></td><td>Create projects and find your project ID and API URL. <em>Docs coming soon.</em></td><td></td></tr><tr><td><strong>BaaS Console</strong></td><td>Configure a project: keys, networks, contracts, and workflows. <em>Docs coming soon.</em></td><td></td></tr></tbody></table>

## Start with the SDK

The **BaaS SDK** lets you sign your users in with a passkey or an external wallet, in a few lines of code. It's the fastest way to see BaaS in action.

<a href="/pages/XtuQGN9Ntc04eiwFNNlw" class="button primary">Get started →</a>

## What you can build

* **Passwordless sign-in** with a passkey: Face ID, Touch ID, or Windows Hello.
* **Wallet sign-in** for MetaMask, Rainbow, Coinbase Wallet, and any EIP-1193 wallet.
* **Multi-chain by default** across your project's supported EVM networks.


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