supportedChains
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constsupportedChains: readonly [{blockExplorers: {default: {apiUrl:"https://api.etherscan.io/v2/api";name:"PolygonScan";url:"https://polygonscan.com"; }; };blockTime:2000;blockTimeMs:number;contracts: {multicall3: {address:"0xca11bde05977b3631167028862be2a173976ca11";blockCreated:25770160; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:137;isTestnet:false;name:"Polygon";nativeCurrency: {decimals:18;name:"POL";symbol:"POL"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://polygon.drpc.org"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet?:boolean;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {apiUrl:"https://api.etherscan.io/v2/api";name:"PolygonScan";url:"https://amoy.polygonscan.com"; }; };blockTime?:number;blockTimeMs:number;contracts: {multicall3: {address:"0xca11bde05977b3631167028862be2a173976ca11";blockCreated:3127388; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:80002;isTestnet:true;name:"Polygon Amoy";nativeCurrency: {decimals:18;name:"POL";symbol:"POL"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://rpc-amoy.polygon.technology"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet:true;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {apiUrl:"https://api-cypress.klaytnscope.com/api";name:"KaiaScan";url:"https://kaiascan.io"; }; };blockTime?:number;blockTimeMs:number;contracts: {multicall3: {address:"0xcA11bde05977b3631167028862bE2a173976CA11";blockCreated:96002415; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:8217;isTestnet:false;name:"Kaia";nativeCurrency: {decimals:18;name:"Kaia";symbol:"KAIA"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://public-en.node.kaia.io"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet?:boolean;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {name:"KaiaScan";url:"https://kairos.kaiascan.io"; }; };blockTime?:number;blockTimeMs:number;contracts: {multicall3: {address:"0xcA11bde05977b3631167028862bE2a173976CA11";blockCreated:123390593; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:1001;isTestnet:true;name:"Kairos Testnet";nativeCurrency: {decimals:18;name:"Kairos KAIA";symbol:"KAIA"; };network:"kairos";prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://public-en-kairos.node.kaia.io"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet:true;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {apiUrl:"https://api.snowtrace.io";name:"SnowTrace";url:"https://snowtrace.io"; }; };blockTime:1700;blockTimeMs:number;contracts: {multicall3: {address:"0xca11bde05977b3631167028862be2a173976ca11";blockCreated:11907934; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:43114;isTestnet:false;name:"Avalanche";nativeCurrency: {decimals:18;name:"Avalanche";symbol:"AVAX"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://api.avax.network/ext/bc/C/rpc"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet?:boolean;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {apiUrl:"https://api-testnet.snowtrace.io";name:"SnowTrace";url:"https://testnet.snowtrace.io"; }; };blockTime?:number;blockTimeMs:number;contracts: {multicall3: {address:"0xca11bde05977b3631167028862be2a173976ca11";blockCreated:7096959; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:43113;isTestnet:true;name:"Avalanche Fuji";nativeCurrency: {decimals:18;name:"Avalanche Fuji";symbol:"AVAX"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://api.avax-test.network/ext/bc/C/rpc"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet:true;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {apiUrl:"https://api.etherscan.io/api";name:"Etherscan";url:"https://etherscan.io"; }; };blockTime:12000;blockTimeMs:number;contracts: {ensUniversalResolver: {address:"0xeeeeeeee14d718c2b47d9923deab1335e144eeee";blockCreated:23085558; };multicall3: {address:"0xca11bde05977b3631167028862be2a173976ca11";blockCreated:14353601; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:1;isTestnet:false;name:"Ethereum";nativeCurrency: {decimals:18;name:"Ether";symbol:"ETH"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://eth.merkle.io"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet?:boolean;verifyHash?: (client,parameters) =>Promise<boolean>; }, {blockExplorers: {default: {apiUrl:"https://api-sepolia.etherscan.io/api";name:"Etherscan";url:"https://sepolia.etherscan.io"; }; };blockTime?:number;blockTimeMs:number;contracts: {ensUniversalResolver: {address:"0xeeeeeeee14d718c2b47d9923deab1335e144eeee";blockCreated:8928790; };multicall3: {address:"0xca11bde05977b3631167028862be2a173976ca11";blockCreated:751532; }; };custom?:Record<string,unknown>;defaultConfirmations:number;ensTlds?: readonlystring[];experimental_preconfirmationTime?:number;extendSchema?:Record<string,unknown>;fees?:ChainFees<undefined>;formatters?:undefined;id:11155111;isTestnet:true;name:"Sepolia";nativeCurrency: {decimals:18;name:"Sepolia Ether";symbol:"ETH"; };prepareTransactionRequest?: ((args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>) | [(args,options) =>Promise<PrepareTransactionRequestParameters<Chain|undefined,Account|undefined,Chain|undefined,`0x${string}`|Account|undefined,PrepareTransactionRequestRequest<Chain|undefined,Chain|undefined,Chain|undefined>>>,object];rpcUrls: {default: {http: readonly ["https://11155111.rpc.thirdweb.com"]; }; };serializers?:ChainSerializers<undefined,TransactionSerializable<bigint,number>>;sourceId?:number;testnet:true;verifyHash?: (client,parameters) =>Promise<boolean>; }]
Defined in: src/chains/index.ts:39
All chains kawasekit supports, in priority order (CLAUDE.md chain priority: Polygon → Kaia → Avalanche → Ethereum, each with its testnet).
Exposed as a readonly tuple — not a Map — so that bundlers can
tree-shake chains a consumer never references.
JPYC liveness is a separate axis (src/tokens/jpyc.ts): a chain can be
supported here while JPYC is not yet live on it (Avalanche Fuji / Sepolia).
Example
import { supportedChains } from "kawasekit";
for (const chain of supportedChains) { console.log(chain.id, chain.name);}