# RPC Endpoints

**These are public RPC URLs available on each network.**

It's important to note that public RPC URLs generally have rate limits, so they may not be reliable 100% of the time.

For the Hop Node, it is highly recommmend to use custom RPC endpoints from an RPC provider service such as [Infura](https://infura.io/) or [Alchemy](https://www.alchemy.com/).

Check out <https://chainlist.org/> as an easy way to connect wallet and add network to your wallet.

Note: the Infura project ID in the examples below is the default that [ethersjs](https://github.com/ethers-io/ethers.js/blob/0d40156fcba5be155aa5def71bcdb95b9c11d889/packages/providers/src.ts/infura-provider.ts#L17) uses.

## Mainnet

### Ethereum

Chain ID: `1`

| URL                                                             |
| --------------------------------------------------------------- |
| `https://mainnet.infura.io/v3/84842078b09946638c03157f83405213` |
| `https://cloudflare-eth.com`                                    |
| `https://rpc.ankr.com/eth`                                      |
| `https://1rpc.io/eth`                                           |

### Polygon

Chain ID: `137`

| URL                                      |
| ---------------------------------------- |
| `https://polygon-rpc.com` (recommended)  |
| `https://rpc-mainnet.matic.network`      |
| `https://rpc-mainnet.maticvigil.com`     |
| `https://rpc-mainnet.matic.quiknode.pro` |
| `https://rpc.ankr.com/polygon`           |
| `https://1rpc.io/matic`                  |

### Gnosis Chain (formerly xDai)

Chain ID: `100`

| URL                                            |
| ---------------------------------------------- |
| `https://rpc.gnosis.gateway.fm` (recommended)  |
| `https://rpc.gnosischain.com`                  |
| `https://xdai-archive.blockscout.com`          |
| `https://rpc.ankr.com/gnosis`                  |
| `https://gnosischain-rpc.gateway.pokt.network` |
| `https://gnosis-mainnet.public.blastapi.io`    |

### Optimism

Chain ID: `10`

| URL                                                                      |
| ------------------------------------------------------------------------ |
| `https://rpc.ankr.com/optimism`                                          |
| `https://1rpc.io/op`                                                     |
| `https://optimism-mainnet.infura.io/v3/84842078b09946638c03157f83405213` |
| `https://mainnet.optimism.io` (not reliable due to rate limits)          |

Using an [Alchemy](https://www.alchemy.com/) RPC url is recommended instead of the public url. [Set up here](https://dashboard.alchemyapi.io/).

### Arbitrum

Chain ID: `42161`

| URL                             |
| ------------------------------- |
| `https://arb1.arbitrum.io/rpc`  |
| `https://rpc.ankr.com/arbitrum` |
| `https://1rpc.io/arb`           |

Using an [Alchemy](https://www.alchemy.com/) RPC url is recommended instead of the public url. [Set up here](https://dashboard.alchemyapi.io/).

### Nova

Chain ID: `42170`

| URL                                        |
| ------------------------------------------ |
| `https://nova.arbitrum.io/rpc`             |
| `https://arbitrum-nova.public.blastapi.io` |

Using an [Alchemy](https://www.alchemy.com/) RPC url is recommended instead of the public url. [Set up here](https://dashboard.alchemyapi.io/).

### Base

Chain ID: `8453`

| URL                        |
| -------------------------- |
| `https://mainnet.base.org` |

Using an [Alchemy](https://www.alchemy.com/) RPC url is recommended instead of the public url. [Set up here](https://dashboard.alchemyapi.io/).

### Linea

Chain ID: `59144`

| URL                       |
| ------------------------- |
| `https://rpc.linea.build` |

Using an [Infura](https://www.infura.io/) RPC url is recommended instead of the public url. [Set up here](https://app.infura.io/register).

## Goerli

### Ethereum (Goerli)

Chain ID: `5`

| URL                                                            |
| -------------------------------------------------------------- |
| `https://goerli.infura.io/v3/84842078b09946638c03157f83405213` |

### Polygon (Mumbai)

Chain ID: `80001`

| URL                                               |
| ------------------------------------------------- |
| `https://rpc.ankr.com/polygon_mumbai`             |
| `https://matic-testnet-archive-rpc.bwarelabs.com` |

### Gnosis Chain (formerly xDai) Goerli

Gnosis Chain is not supported on Goerli

### Optimism (Goerli)

| URL                                     |
| --------------------------------------- |
| `https://rpc.ankr.com/optimism_testnet` |
| `https://goerli.optimism.io`            |

### Base (Goerli)

| URL                       |
| ------------------------- |
| `https://goerli.base.org` |

### Linea (Goerli)

Chain ID: `59140`

| URL                              |
| -------------------------------- |
| `https://rpc.goerli.linea.build` |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hop.exchange/developer-docs/rpc/rpc-endpoints.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.