Public

The publicProvider configures the chains with a public RPC URL and also provides an ethers.js getpublicProvider.

import { publicProvider } from '@wagmi/core/providers/public'

Usage

import { configureChains } from '@wagmi/core'
import { mainnet, polygon } from '@wagmi/core/chains'
import { publicProvider } from '@wagmi/core/providers/public'
 
const { chains, provider } = configureChains(
  [mainnet, polygon],
  [publicProvider()],
)

Note: The above example is using chains from @wagmi/core/chains.

⚠️

Only having publicProvider in your providers will make the chain use the public RPC URL which could lead to rate-limiting. It is recommended to also include another provider in your list (such as: alchemyProvider, infuraProvider or jsonRpcProvider).

Return Value

{
  chains: Chain[],
  provider: BaseProvider,
  webSocketProvider: WebSocketProvider
}

Configuration

priority (optional)

The priority used for the provider. Lower-value priorities are favoured over higher-value priorities. If multiple providers share the same priority, they are chosen at random.

import { configureChains } from '@wagmi/core'
import { mainnet, polygon } from '@wagmi/core/chains'
import { publicProvider } from '@wagmi/core/providers/public'
 
const { chains, provider } = configureChains(
  [mainnet, polygon],
  [
    alchemyProvider({ apiKey: 'yourAlchemyApiKey', priority: 0 }),
    publicProvider({ priority: 1 }),
  ],
)

stallTimeout (optional)

The timeout in milliseconds after which another provider will be attempted.

import { configureChains } from '@wagmi/core'
import { mainnet, polygon } from '@wagmi/core/chains'
import { publicProvider } from '@wagmi/core/providers/public'
 
const { chains, provider } = configureChains(
  [mainnet, polygon],
  [
    alchemyProvider({ apiKey: 'yourAlchemyApiKey' }),
    publicProvider({ stallTimeout: 1_000 }),
  ],
)

weight (optional)

The weight a response from this provider provides. This can be used if a given provider is more trusted.

import { configureChains } from '@wagmi/core'
import { mainnet, polygon } from '@wagmi/core/chains'
import { publicProvider } from '@wagmi/core/providers/public'
 
const { chains, provider } = configureChains(
  [mainnet, polygon],
  [
    alchemyProvider({ apiKey: 'yourAlchemyApiKey', weight: 1 }),
    publicProvider({ weight: 2 }),
  ],
)

Infura JSON RPC