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

# Chain Support

MoonKey provides comprehensive wallet infrastructure for two major blockchain ecosystems: Ethereum and Solana. These chains receive full native support with complete functionality across all MoonKey features.

## Fully supported chains

MoonKey offers complete, production-ready support for the following blockchain ecosystems:

<CardGroup cols={2}>
  <Card title="Ethereum & EVM Networks" icon="ethereum" href="/get-started/frontend-sdks/react/advance/configure-evm-networks">
    Full support for Ethereum and all EVM-compatible networks including Base, Arbitrum, Polygon, Optimism, and more.
  </Card>

  <Card title="Solana & SVM Networks" icon="bolt" href="/get-started/frontend-sdks/react/advance/configure-solana-networks">
    Complete support for Solana and all SVM-compatible networks including mainnet, devnet, and testnet.
  </Card>
</CardGroup>

## What "fully supported" means

Chains with full MoonKey support include:

### Complete wallet functionality

* Create and manage embedded wallets
* Automatic wallet creation on user login
* Manual wallet creation when needed
* Private key export for maximum portability

### Transaction capabilities

* Sign messages for authentication and verification
* Sign transactions without broadcasting
* Send transactions with automatic broadcasting
* Full support for smart contract interactions

### User experience features

* Pre-built, customizable UI components
* Headless APIs for custom interfaces
* Real-time transaction status
* Clear error messages and handling

### Developer tools

* React SDK with TypeScript support
* REST API for server-side operations
* Comprehensive documentation
* Code examples and guides

## Ethereum ecosystem

MoonKey provides native support for Ethereum and the entire EVM ecosystem:

### Mainnet networks

* **Ethereum** - Ethereum mainnet
* **Base** - Coinbase's L2 solution
* **Arbitrum** - Optimistic rollup L2
* **Optimism** - Another optimistic rollup
* **Polygon** - Fast and low-cost EVM sidechain
* **And more** - Any EVM-compatible network

### Testnets

* **Sepolia** - Ethereum testnet
* **Base Sepolia** - Base testnet
* **Arbitrum Sepolia** - Arbitrum testnet
* **Other testnets** - All major EVM testnets

### Configuration

Configure EVM networks in your MoonKey provider:

```tsx theme={null}
import { MoonKeyProvider } from '@moon-key/react-auth';
import { base, arbitrum, polygon } from 'viem/chains';

<MoonKeyProvider
  publishableKey="your_publishable_key"
  config={{
    supportedChains: [base, arbitrum, polygon]
  }}
>
  {children}
</MoonKeyProvider>
```

Learn more about [configuring EVM networks](/get-started/frontend-sdks/react/advance/configure-evm-networks).

## Solana ecosystem

MoonKey offers complete support for Solana and SVM-compatible networks:

### Networks

* **Mainnet Beta** - Solana production network
* **Devnet** - Development and testing network
* **Testnet** - Public testing network
* **Custom SVM** - Other SVM-compatible chains

### Configuration

Configure Solana networks with custom RPC endpoints:

```tsx theme={null}
import { MoonKeyProvider } from '@moon-key/react-auth';

<MoonKeyProvider
  publishableKey="your_publishable_key"
  config={{
    solana: {
      rpcs: {
        'solana:mainnet': {
          rpc: 'https://api.mainnet-beta.solana.com',
          rpcSubscriptions: 'wss://api.mainnet-beta.solana.com'
        },
        'solana:devnet': {
          rpc: 'https://api.devnet.solana.com',
          rpcSubscriptions: 'wss://api.devnet.solana.com'
        }
      }
    }
  }}
>
  {children}
</MoonKeyProvider>
```

Learn more about [configuring Solana networks](/get-started/frontend-sdks/react/advance/configure-solana-networks).

## Features by chain

Both Ethereum and Solana ecosystems receive identical feature support:

| Feature            | Ethereum/EVM | Solana/SVM |
| ------------------ | ------------ | ---------- |
| Embedded wallets   | ✓            | ✓          |
| Automatic creation | ✓            | ✓          |
| Sign messages      | ✓            | ✓          |
| Sign transactions  | ✓            | ✓          |
| Send transactions  | ✓            | ✓          |
| Export private key | ✓            | ✓          |
| UI components      | ✓            | ✓          |
| REST API           | ✓            | ✓          |
| Custom RPC         | ✓            | ✓          |

## Custom networks

Both Ethereum and Solana support custom networks:

### Custom EVM networks

Add any EVM-compatible network using `viem`'s `defineChain`:

```tsx theme={null}
import { defineChain } from 'viem';

const customChain = defineChain({
  id: 12345,
  name: 'Custom Chain',
  network: 'custom',
  nativeCurrency: {
    decimals: 18,
    name: 'Custom Token',
    symbol: 'CTK',
  },
  rpcUrls: {
    default: {
      http: ['https://custom-rpc-url.com'],
    },
  },
  blockExplorers: {
    default: {
      name: 'Explorer',
      url: 'https://explorer.custom-chain.com',
    },
  },
});
```

### Custom SVM networks

Connect to custom SVM-compatible networks with custom RPC endpoints:

```tsx theme={null}
import { Connection } from '@solana/web3.js';

const connection = new Connection('https://custom-svm-rpc.com');
```

## Choosing your blockchain

When building with MoonKey, consider these factors:

<AccordionGroup>
  <Accordion title="Ethereum/EVM for...">
    * **DeFi applications** - Largest DeFi ecosystem
    * **NFT marketplaces** - Most NFT activity
    * **Smart contracts** - Mature tooling and libraries
    * **Institutional adoption** - Widely recognized
    * **L2 solutions** - Fast and cheap with Base, Arbitrum, etc.
  </Accordion>

  <Accordion title="Solana/SVM for...">
    * **High performance** - Fast transaction speeds
    * **Low costs** - Minimal transaction fees
    * **Gaming** - Real-time blockchain gaming
    * **NFT minting** - Fast and affordable minting
    * **Payment applications** - Micropayments and instant transfers
  </Accordion>
</AccordionGroup>

## Future chain support

MoonKey's architecture is designed to support additional blockchains in the future. We're continuously evaluating new chains and ecosystems to add to our platform.

<Info>
  Interested in support for a specific blockchain? [Contact us](mailto:support@moonkey.fun) to discuss your requirements.
</Info>

## Best practices

<AccordionGroup>
  <Accordion title="Use appropriate networks">
    * Develop on testnets (Sepolia, Devnet)
    * Test thoroughly before mainnet deployment
    * Use separate API keys for test and production
  </Accordion>

  <Accordion title="Configure RPC endpoints">
    * Use reliable RPC providers (Alchemy, QuickNode, etc.)
    * Consider rate limits for free RPC endpoints
    * Set up fallback RPC URLs for reliability
  </Accordion>

  <Accordion title="Handle chain switching">
    * Allow users to switch chains easily
    * Show current chain clearly in your UI
    * Handle transactions for the correct chain
  </Accordion>

  <Accordion title="Test cross-chain scenarios">
    * Test wallets on both Ethereum and Solana
    * Verify proper chain isolation
    * Test network switching flows
  </Accordion>
</AccordionGroup>

## Getting started

<CardGroup cols={2}>
  <Card title="Configure EVM Networks" icon="ethereum" href="/get-started/frontend-sdks/react/advance/configure-evm-networks">
    Set up Ethereum and EVM-compatible chains
  </Card>

  <Card title="Configure Solana Networks" icon="bolt" href="/get-started/frontend-sdks/react/advance/configure-solana-networks">
    Set up Solana and SVM-compatible networks
  </Card>

  <Card title="Quick Start Guide" icon="rocket" href="/get-started/frontend-sdks/react/quick-start">
    Build your first multi-chain wallet app
  </Card>

  <Card title="REST API" icon="code" href="/get-started/rest-api/setup">
    Manage wallets via REST API
  </Card>
</CardGroup>