Skip to main content
The Blockchain API is the RPC service that powers AppKit’s blockchain functions such as account balances, ENS resolution, transaction history, and more.
Blockchain API is not the same as the WalletConnect protocol. WalletConnect protocol supports wallets on all chains using the CAIP-25 standard. We do not accept requests for new chains to be added to our Blockchain API. Please see your SDK’s relevant documentation on how to add RPC URLs for chains you want to use that Blockchain API does not.

​
Features

  • AppKit built-in integration
  • Multi-chain mainnet and testnets
  • HTTP RPC support
  • Cloud metrics and reporting
  • The Identity API with near-instant ENS resolution
  • Transaction history

​
Supported Chains

Chain name with associated chainId query param to use.

​
HTTP RPC

​
Ethereum

NetworkChain ID
Ethereum Mainneteip155:1
Optimism Mainneteip155:10
Cronos Mainnet 1eip155:25
Rootstock Mainnet 1eip155:30
Rootstock Testnet 1eip155:31
Binance Smart Chain Mainneteip155:56
Binance Smart Chain Testnet 1eip155:97
Gnosis Chain Mainneteip155:100
Unichain Mainnet 1eip155:130
Polygon Mainneteip155:137
Sonic Mainneteip155:146
zkSync Era Sepolia Testnet 1eip155:300
zkSync Era Mainneteip155:324
Polygon zkEVM Mainneteip155:1101
Wemix Mainnet 1eip155:1111
Wemix Testnet 1eip155:1112
Moonbeam GLMR 1eip155:1284
Unichain Sepolia 1eip155:1301
Sei Network 1eip155:1329
Morph Mainnet 1eip155:2818
Morph Hoodi 1eip155:2910
Mantle Mainnet 1eip155:5000
Mantle Testnet 1eip155:5003
Kaia Mainneteip155:8217
Base Mainneteip155:8453
Monad Testneteip155:10143
Ethereum Holeskyeip155:17000
Arbitrum Mainneteip155:42161
Celo Mainneteip155:42220
Avalanche Fuji Testnet 1eip155:43113
Avalanche C-Chaineip155:43114
DataHaven Testnet 1eip155:55931
Sonic Testnet 1eip155:57054
Linea Mainnet 1eip155:59144
Polygon Amoy 1eip155:80002
Berachain Bepolia 1eip155:80069
Berachain Mainnet 1eip155:80094
Base Sepoliaeip155:84532
Arbitrum Sepoliaeip155:421614
Scroll Mainnet 1eip155:534352
Scroll Sepolia Testnet 1eip155:534351
Ethereum Hoodi 1eip155:560048
XRPL EVM Mainnet 1eip155:1440000
XRPL EVM Testnet 1eip155:1449000
Zora 1eip155:7777777
Ethereum Sepoliaeip155:11155111
Optimism Sepoliaeip155:11155420
Zora Sepolia 1eip155:999999999
Aurora Mainnet 1eip155:1313161554
Aurora Testnet 1eip155:1313161555
Near Mainnetnear:mainnet

​
Solana

NetworkChain ID
Solana Mainnetsolana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Solana Devnetsolana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1
Solana Testnetsolana:4uhcVJyU9pJkvQyS88uRDiswHXSCkY3z

​
Bitcoin

NetworkChain ID
Bitcoin Mainnetbip122:000000000019d6689c085ae165831e93
Bitcoin Testnetbip122:000000000933ea01ad0ee984209779ba

​
Sui

NetworkChain ID
Sui Mainnetsui:mainnet
Sui Devnetsui:devnet
Sui Testnetsui:testnet

​
Tron

NetworkChain ID
Tron Mainnettron:0x2b6653dc
Tron Nile Testnet 1tron:0xcd8690dc

​
Ton

NetworkChain ID
Ton Mainnetton:-239
Ton Testnetton:-3

​
Stacks

The Stacks support is currently in Beta. Endpoints and schema can be changed in the near future.
NetworkChain ID
Stacks Mainnet 1stacks:1
Stacks Testnet 1stacks:2147483648
1 The availability of this chain in our RPC is not guaranteed.

​
WebSocket RPC

WebSocket RPC is not recommended for production use, and may be removed in the future.

​
Ethereum

NetworkChain ID
Ethereum Mainneteip155:1
Binance Smart Chaineip155:56
Polygon Mainneteip155:137
Base Mainneteip155:8453
Zoraeip155:7777777

​
Solana

NetworkChain ID
Solana Mainnetsolana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Solana Devnetsolana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1

​
Using the Blockchain API

No config or setup is needed for AppKit integrations. For other usage, see the Usage section.

​
Limits

The Blockchain API is free for 2.5 million requests per 30 days. If you wish to increase your limits, please contact [email protected].