Money Market on Kaia

Fragmented money markets mean lower capital efficiency and worse rates. The SODAX money market pools lending liquidity on the hub while letting users act from any supported network, including Kaia. A user can supply tokens from Kaia and borrow on another network, or borrow into their Kaia account against collateral held elsewhere, without your product running its own lending infrastructure. Four actions, all through sodax.moneyMarket: supply, borrow, withdraw, repay. Each has a complete one-call form (handles the relay end-to-end) and a create*Intent form when you want the transaction only. Read the Kaia money-market list at runtime, as below, or see Networks & Assets. Native KAIA is on it today, and supplying or repaying with KAIA needs no approval.

Supply from Kaia

Supplying an ERC-20 token needs an allowance first, the same as any EVM network:

import { Sodax, ChainKeys } from '@sodax/sdk';

const sodax = new Sodax();

// find() returns XToken | undefined, so narrow before using the address
const kaiaTokens = sodax.moneyMarket.getSupportedTokensByChainId(ChainKeys.KAIA_MAINNET);
const usdt = kaiaTokens.find(t => t.symbol === 'USDT');
if (!usdt) throw new Error('USDT is not a supported money-market token on Kaia');

const params = {
  srcChainKey: ChainKeys.KAIA_MAINNET,
  srcAddress: await walletProvider.getWalletAddress(),
  token: usdt.address,
  amount: 100n * 10n ** BigInt(usdt.decimals), // 100 USDT
  action: 'supply',
} as const;

const allowance = await sodax.moneyMarket.isAllowanceValid({ params });
if (!allowance.ok) throw allowance.error;
if (!allowance.value) {
  const approval = await sodax.moneyMarket.approve({ params, walletProvider });
  if (!approval.ok) throw approval.error;
  // wait for the approval to be mined before supplying
}

const result = await sodax.moneyMarket.supply({
  params,
  walletProvider, // IEvmWalletProvider, narrowed by srcChainKey
  timeout: 120_000, // optional relay timeout (default 120 s)
});

Borrow to Kaia

dstChainKey and dstAddress default to the source, but any supported network can be the destination. That is the cross-network story in one parameter: collateral supplied from one network, borrowed liquidity delivered to another.

const bnUSD = kaiaTokens.find(t => t.symbol === 'bnUSD');
if (!bnUSD) throw new Error('bnUSD is not a supported money-market token on Kaia');

const result = await sodax.moneyMarket.borrow({
  params: {
    srcChainKey: ChainKeys.KAIA_MAINNET,     // where the caller acts from
    srcAddress: userKaiaAddress,
    token: bnUSD.address,                    // token on the destination network
    amount: 50n * 10n ** BigInt(bnUSD.decimals), // 50 bnUSD
    action: 'borrow',
    dstChainKey: ChainKeys.KAIA_MAINNET,     // deliver on Kaia
    dstAddress: userKaiaAddress,
  },
  walletProvider,
});

Build every amount from the token’s own decimals: on Kaia, USDT uses 6 while KAIA and bnUSD use 18. withdraw and repay follow the same shape. Withdraw and borrow need no approval on any network; repaying with an ERC-20 token needs an allowance, like supply.

Building a lending UI

sodax.moneyMarket.data exposes what you need for rates, positions, and health factors without extra indexing:

getReservesHumanized(): all reserves, human-readable.
getUserReservesHumanized(spokeChainKey, userAddress): a user’s positions.
formatReservesUSD(request) / formatUserSummary(request): USD-converted reserves and portfolio summaries.

Error handling

The module returns typed results. Discriminate on result.error.code ('RELAY_TIMEOUT', 'EXECUTION_FAILED', …) with structured context on result.error.context.

Full reference, including intent-only methods, gas estimation, and the per-method error-code table: Lend / Borrow (Money Market).

​Supply from Kaia

​Borrow to Kaia

​Building a lending UI

​Error handling

Supply from Kaia

Borrow to Kaia

Building a lending UI

Error handling