> For the complete documentation index, see [llms.txt](https://docs.manifold.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.manifold.xyz/client-sdk/sdk/public-provider-adapters.md).

# Public Provider Adapters

Public providers enable the SDK to perform read-only blockchain operations such as fetching balances, estimating gas, reading smart contract data, and subscribing to contract events. They are required when initializing the Manifold Client.

## Available Adapters

* [Wagmi Public Provider](/client-sdk/sdk/public-provider-adapters/wagmi.md)
* [Viem Public Provider](/client-sdk/sdk/public-provider-adapters/viem.md)
* [Ethers v5 Public Provider](/client-sdk/sdk/public-provider-adapters/ethersv5.md)

## Multi-Network Support

The SDK supports multiple networks simultaneously. Provide a public client/provider for each network you want to support:

```typescript
const publicProvider = createPublicProviderViem({
  1: mainnetClient,       // Ethereum Mainnet
  8453: baseClient,       // Base
  10: optimismClient,     // Optimism
  360: shapeClient,       // Shape
  11155111: sepoliaClient // Sepolia Testnet
});
```

## Network Requirements

The public provider must include a client/provider for the network where the NFT product is deployed. The SDK will automatically use the appropriate provider based on the product's network.

[**ClientSDKError**](/client-sdk/reference/clientsdkerror.md)

| Code                    | Message                                |
| ----------------------- | -------------------------------------- |
| INVALID\_INPUT          | Public provider is required            |
| NETWORK\_NOT\_SUPPORTED | No provider available for network      |
| WRONG\_NETWORK          | Provider is connected to wrong network |