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Providers
Public

Public

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

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

Usage

import { chain, configureChains } from 'wagmi'
import { publicProvider } from 'wagmi/providers/public'

const { chains, provider } = configureChains(
  [chain.mainnet, chain.polygon],
  [publicProvider()],
)
⚠️

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

pollingInterval (optional)

The frequency in milliseconds at which the provider polls.

import { chain, configureChains } from 'wagmi'
import { publicProvider } from 'wagmi/providers/public'

const { chains, provider } = configureChains(
  [chain.mainnet, chain.polygon],
  [publicProvider({ pollingInterval: 5000 })],
)

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 { chain, configureChains } from 'wagmi'
import { publicProvider } from 'wagmi/providers/public'

const alchemyId = process.env.ALCHEMY_ID

const { chains, provider } = configureChains(
  [chain.mainnet, chain.polygon],
  [
    alchemyProvider({ alchemyId, priority: 0 }),
    publicProvider({ priority: 1 }),
  ],
)

stallTimeout (optional)

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

import { chain, configureChains } from 'wagmi'
import { publicProvider } from 'wagmi/providers/public'

const alchemyId = process.env.ALCHEMY_ID

const { chains, provider } = configureChains(
  [chain.mainnet, chain.polygon],
  [
    alchemyProvider({ alchemyId, stallTimeout: 1000 }),
    publicProvider({ stallTimeout: 1000 }),
  ],
)

weight (optional)

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

import { chain, configureChains } from 'wagmi'
import { publicProvider } from 'wagmi/providers/public'

const alchemyId = process.env.ALCHEMY_ID

const { chains, provider } = configureChains(
  [chain.mainnet, chain.polygon],
  [alchemyProvider({ alchemyId, weight: 1 }), publicProvider({ weight: 2 })],
)
Infura
JSON RPC