SODAX for Kaia - SODAX Docs

No new contracts. SODAX’s Kaia spoke contracts are already live; your entire integration is TypeScript. Your users sign ordinary EVM transactions on Kaia, and SODAX coordinates cross-network execution, routing, and recovery behind the scenes.

You keep shipping on Kaia. SODAX absorbs the cross-network execution layer, so your product can offer trading and lending against every asset in the SODAX System, 166 across all supported networks, without leaving your stack. Integration happens in TypeScript, at the SDK or React layer. There is nothing to deploy, audit, or maintain on-chain. Using SODAX is free. Trades carry a fixed 0.1% base fee taken by the protocol, and you set your own platform fee on top. That part is fully yours, both the rate and the revenue. See Monetize SDK.

What to know on Kaia

To the SDK, Kaia is a standard EVM network: the same EvmWalletProvider, ERC-20 approvals, and intent flow as any other EVM network. Two Kaia details are yours to know about:

The signing account must have a legacy account key. Kaia lets an account change its key or switch to multisig and role-based keys. Ethereum-format transactions, which SODAX and EVM wallets send, only work from accounts with the AccountKeyLegacy type, whose address is derived from their key. Kaia creates new accounts with that type; an account whose key has been updated cannot sign SODAX transactions.
The public endpoint is for testing. The SODAX config uses https://public-en.node.kaia.io, which Kaia provides for testing and development and asks not to be used commercially. Pass your own endpoint through rpcUrl in production.

What you can build

Two SODAX modules are relevant to Kaia builders:

Swaps

Intent-based cross-network swaps. Users swap between KAIA or Kaia tokens and assets on any supported network with one signed transaction on Kaia. Solvers fill; SODAX routes and settles.

Money Market

Cross-network lending and borrowing. Supply from Kaia, borrow to Kaia or any other supported network, and manage positions without running lending infrastructure.

Choose your integration path

Path	Best for	Start here
`@sodax/sdk`	Full control from any TypeScript backend or frontend	Quickstart
`@sodax/dapp-kit` + `@sodax/wallet-sdk-react`	React apps that want hooks and wallet connectivity out of the box	Wallets
Builders MCP	Building with AI agents against the full SODAX stack	See below

Scope and build with AI

Point your AI coding assistant at the SODAX Builders MCP and it gains live access to the whole SODAX System: supported chains and tokens, real swap quotes, money market rates, intent history, and these docs. It works in Claude, Cursor, VS Code, Windsurf, and any other MCP-capable client.

{
  "mcpServers": {
    "sodax-builders": {
      "url": "https://builders.sodax.com/mcp"
    }
  }
}

Use it to scope before you commit: your assistant can read your own codebase, pull real quotes and token lists, and map exactly where SODAX fits in your product. Full tool list and per-client setup at builders.sodax.com.

In this section

Quickstart: install the SDK, connect a Kaia account, make your first cross-network swap.
Swaps on Kaia: approvals, quoting, and fees.
Money Market on Kaia: supply, borrow, repay, and withdraw with cross-network collateral.
Wallets: EVM wallets on Kaia, and every other network’s wallets through one interface.
Networks & Assets: what is live on Kaia today and what your users can reach.
Kaia FAQ: the questions Kaia engineers actually ask.

Kaia references

Kaia documentation: accounts, transactions, and the EVM on Kaia.
Kaia accounts: account key types, and how Kaia decouples keys from addresses.
Ethereum compatibility: the Ethereum transaction types Kaia accepts, and the AccountKeyLegacy requirement.
Public JSON-RPC endpoints: Kaia’s public endpoints and the providers that offer production ones.
KaiaScan: a Kaia mainnet explorer, for checking transactions and accounts.

Building something? Start with the Quickstart.

​What to know on Kaia

​What you can build

Swaps

Money Market

​Choose your integration path

​Scope and build with AI

​In this section

​Kaia references

What to know on Kaia

What you can build

Choose your integration path

Scope and build with AI

In this section

Kaia references