# Arbitrum One RPC and Subgraphs

Read Arbitrum One state, submit signed transactions and subscribe to node events through GraphOps RPC over HTTPS and WebSocket. Query indexed Arbitrum One data through GraphQL Subgraphs, including your own Managed Subgraphs.

[Create account](https://platform.graphops.xyz/auth/register)[Network reference](https://docs.graphops.xyz/rpc/networks)

Chain ID

42161

CAIP-2 ID

eip155:42161

Network type

Mainnet

Services

RPC, Subgraphs

## GraphOps services on Arbitrum One

One API key from your organization can include every service you use, and all of them draw from the organization's credit balance.

### RPC

Send JSON-RPC requests over HTTPS, or open a WebSocket for subscriptions. Archive data is available: historical state, such as eth_call at a past block, and historical event logs. Arbitrum One RPC is not published with tracing.

HTTPS

https://rpc.graphops.xyz/v1/evm/42161

WebSocket

wss://rpc.graphops.xyz/v1/evm/42161

[GraphOps RPC](https://graphops.xyz/services/rpc/) [RPC network reference](https://docs.graphops.xyz/rpc/networks)

### Subgraphs

Query any Subgraph that The Graph Network serves on Arbitrum One by Deployment CID or Graph Network Subgraph ID. Managed indexing runs on Arbitrum One: publish a Managed Subgraph and GraphOps indexes it. Managed Subgraphs need a monthly plan.

Manifest network

arbitrum-one

[GraphOps Subgraphs](https://graphops.xyz/services/subgraphs/) [Subgraph network reference](https://docs.graphops.xyz/subgraphs/networks)

## Arbitrum One network details

Use these identifiers to name Arbitrum One in requests, manifests and package configuration.

EVM chain ID

42161

CAIP-2 network ID

eip155:42161

Network type

Mainnet

Subgraph manifest network

arbitrum-one

Other network names

arbitrum arbitrum-one-mainnet arbone evm-42161

Block explorer

[arbiscan.io](https://arbiscan.io/)

## Make a first Arbitrum One request

This request reads the latest Arbitrum One block number with eth_blockNumber. Create an API key that includes RPC in your organization and export it as GRAPHOPS_API_KEY. The example sends it in the Authorization header.

[RPC quickstart](https://docs.graphops.xyz/rpc/getting-started) [Authentication](https://docs.graphops.xyz/rpc/authentication)

## Pricing

Usage on Arbitrum One draws credits at the same rates as on every other network. Your monthly plan sets the price per credit.

[Size a plan and estimate your usage](https://graphops.xyz/pricing/)

[Live pricing: plan prices, extra credits and every usage rate](https://graphops.xyz/pricing.md)

## Arbitrum One questions

What is the Arbitrum One chain ID?

Arbitrum One is a mainnet with EVM chain ID 42161. Its CAIP-2 network ID is eip155:42161.

What is the GraphOps Arbitrum One RPC endpoint?

Send HTTPS JSON-RPC requests to https://rpc.graphops.xyz/v1/evm/42161, and open WebSocket connections to wss://rpc.graphops.xyz/v1/evm/42161. Authenticate with an API key from your organization that includes RPC, in the Authorization header or as a route token at the end of the path.

Does GraphOps Arbitrum One RPC serve archive data?

Yes. Historical state, such as eth_call at a past block, and historical event logs are available on Arbitrum One.

Does GraphOps Arbitrum One RPC support tracing?

No. Arbitrum One RPC is not published with tracing.

Which network name do Arbitrum One Subgraphs use?

Subgraphs that index Arbitrum One declare network: arbitrum-one in their manifest.

Can GraphOps index my own Subgraph on Arbitrum One?

Yes. Managed indexing runs on Arbitrum One, so you can deploy a Managed Subgraph that GraphOps indexes. Managed Subgraphs need a monthly plan.

## Related networks

[All supported networks](https://graphops.xyz/networks/)

- [Testnet · Chain ID 421614

### Arbitrum Sepolia

eip155:421614

- RPC  · archive

- Subgraphs  · managed indexing

View Arbitrum Sepolia](https://graphops.xyz/networks/arbitrum-sepolia/)

- [Mainnet · Chain ID 1

### Ethereum Mainnet

eip155:1

- RPC  · archive, tracing

- Subgraphs  · managed indexing

- Substreams

View Ethereum Mainnet](https://graphops.xyz/networks/ethereum-mainnet/)

- [Testnet · Chain ID 11155111

### Ethereum Sepolia

eip155:11155111

- RPC  · archive

- Subgraphs  · managed indexing

View Ethereum Sepolia](https://graphops.xyz/networks/ethereum-sepolia/)

- [Mainnet · Chain ID 100

### Gnosis

eip155:100

- RPC  · archive

- Subgraphs  · managed indexing

View Gnosis](https://graphops.xyz/networks/gnosis/)

## Start building on Arbitrum One.

Create an organization, choose your monthly credits, then create an API key that includes the services you need.

[Create account](https://platform.graphops.xyz/auth/register)[Discuss your project](https://graphops.xyz/contact/#enterprise)