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

# TinyCloud Documentation

> User-owned data storage with delegatable capabilities

# TinyCloud Documentation

TinyCloud is a decentralized, user-owned data storage platform built on [UCAN capabilities](https://ucan.xyz/) and [Sign-In with Ethereum (SIWE)](https://login.xyz/) authentication. It gives users full ownership of their data while enabling fine-grained, delegatable access control for applications and collaborators.

<CardGroup cols={2}>
  <Card title="Web SDK Quickstart" icon="globe" href="/quickstart/web-sdk">
    Build browser apps with wallet-based authentication and user-owned storage
  </Card>

  <Card title="Node SDK Quickstart" icon="server" href="/quickstart/node-sdk">
    Build backend services with private key authentication and programmatic access
  </Card>

  <Card title="KV Storage" icon="database" href="/guides/kv-storage">
    Store and retrieve application data in user-owned spaces
  </Card>

  <Card title="TinyCloud VFS" icon="folder-tree" href="/guides/tinycloud-vfs">
    Mount TinyCloud KV as a Node.js virtual file system
  </Card>

  <Card title="Data Vault" icon="lock" href="/guides/data-vault">
    End-to-end encrypted storage with client-side cryptography and sharing
  </Card>

  <Card title="Delegations & Sharing" icon="share-2" href="/guides/delegations">
    Grant scoped, revocable permissions to other users and applications
  </Card>

  <Card title="OpenKey" icon="key" href="/openkey/index">
    Simplified key management and authentication for your users
  </Card>
</CardGroup>

## Choose Your Path

<Tabs>
  <Tab title="Web Developers">
    Building a browser-based application? Start with the [Web SDK Quickstart](/quickstart/web-sdk).

    You'll learn how to:

    * Connect user wallets (MetaMask, WalletConnect)
    * Sign in with Ethereum (SIWE)
    * Store and retrieve user data in spaces
    * Share data through delegations and sharing links
  </Tab>

  <Tab title="Backend Developers">
    Building a server, API, or CLI tool? Start with the [Node SDK Quickstart](/quickstart/node-sdk).

    You'll learn how to:

    * Authenticate with private keys
    * Manage spaces programmatically
    * Create delegations for user access
    * Build server-side integrations with TinyCloud storage
  </Tab>

  <Tab title="Key Management (OpenKey)">
    Need simplified authentication for your users? Start with the [OpenKey overview](/openkey/index).

    You'll learn how to:

    * Embed the OpenKey widget for seamless sign-in
    * Integrate OpenKey with OAuth providers
    * Connect OpenKey with TinyCloud storage
  </Tab>
</Tabs>

## Core Concepts

* **Spaces** - Data ownership containers tied to user identity. Each user gets a space where their application data lives. [Learn more](/guides/spaces)
* **KV Storage** - Key-value storage within spaces for reading and writing application data. [Learn more](/guides/kv-storage)
* **Data Vault** - End-to-end encrypted KV storage with client-side AES-256-GCM encryption and X25519 sharing. The server never sees plaintext. [Learn more](/guides/data-vault)
* **Delegations** - Shareable, scoped access permissions built on UCAN. Grant other users or applications specific capabilities over your data. [Learn more](/guides/delegations)
* **Sharing Links** - Generate links that grant temporary or scoped access to data without requiring the recipient to have an existing account. [Learn more](/guides/sharing)

Ready to start? Pick a quickstart guide above or explore the [core concepts](/concepts/did-formats).