ChainsResponse

chains object[]required

List of all known blockchain networks

Array [

namestringrequired

Human-readable name identifier for the blockchain network.

Example: ethereum-mainnet

displayNamestringnullable

Display name for the blockchain network.

Example: Ethereum

chainSelectorstringrequired

The CCIP chain selector (uint64 as string). Example Selectors (non-exhaustive):

Chain	Selector
Arbitrum	4949039107694359620
Base	15971525489660198786
Ethereum	5009297550715157269
Optimism	3734403246176062136
Polygon	4051577828743386545
Solana	124615329519749607

For the complete list of chain selectors, see: CCIP Directory

Possible values: Value must match regular expression ^[0-9]+$

Example: 5009297550715157269

chainIdstringrequired

Native chain identifier (EIP-155 for EVM, genesis hash for SVM, etc.).

Example: 1

chainFamilystringrequired

Blockchain family/architecture type. Determines message format, address encoding, and execution model.

Example: EVM

environmentChainEnvironmentrequired

Deployment environment of the network.

Example: mainnet

isPrivatebooleanrequired

Whether this is a private chain.

Example: false

]

JSON

ChainsResponse

{
  "chains": [
    {
      "name": "ethereum-mainnet",
      "displayName": "Ethereum",
      "chainSelector": "5009297550715157269",
      "chainId": "1",
      "chainFamily": "EVM",
      "environment": "mainnet",
      "isPrivate": false
    },
    {
      "name": "solana-mainnet",
      "displayName": "Solana",
      "chainSelector": "124615329519749607",
      "chainId": "5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d",
      "chainFamily": "SVM",
      "environment": "mainnet",
      "isPrivate": false
    }
  ]
}