Quickstart on Robinhood Chain

This page takes you from zero to a cross-network swap sourced from Robinhood Chain. No new contracts, no approval for native ETH, one signed transaction for your user.

Building with an AI assistant? Add the SODAX Builders MCP (https://builders.sodax.com/mcp) to Claude, Cursor, or any MCP-capable tool and it can pull live token lists, real quotes, and these docs while it writes your integration.

1. Install

npm install @sodax/sdk @sodax/wallet-sdk-core
# or: pnpm add / yarn add

2. Create a Robinhood Chain wallet provider

Robinhood Chain uses the same EvmWalletProvider as every other EVM network, keyed by ChainKeys.ROBINHOOD_MAINNET.

import { EvmWalletProvider } from '@sodax/wallet-sdk-core';
import { ChainKeys } from '@sodax/sdk';

const walletProvider = new EvmWalletProvider({
  privateKey: '0x…', // private key of the Robinhood Chain account
  chainId: ChainKeys.ROBINHOOD_MAINNET,
  rpcUrl: 'https://rpc.mainnet.chain.robinhood.com', // rate-limited: use a provider endpoint in production
});

import { EvmWalletProvider } from '@sodax/wallet-sdk-core';

// walletClient and publicClient are viem clients for Robinhood Chain,
// usually supplied by wagmi from the user's connected EVM wallet
const walletProvider = new EvmWalletProvider({
  walletClient,
  publicClient,
});

If you build those viem clients yourself, use the robinhoodChain definition from @sodax/wallet-sdk-core; see Wallets. Building in React? @sodax/wallet-sdk-react connects EVM wallets for you and hands back a ready-made provider via useWalletProvider.

3. Look up supported tokens

Token addresses and decimals come from the SDK config, so you never hard-code them.

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

const sodax = new Sodax();

// find() returns XToken | undefined, so narrow before using the address
const bySymbol = (tokens: readonly XToken[], symbol: string) => {
  const token = tokens.find(t => t.symbol === symbol);
  if (!token) throw new Error(`${symbol} is not a supported swap token`);
  return token;
};

const eth = bySymbol(sodax.swaps.getSupportedSwapTokensByChainId(ChainKeys.ROBINHOOD_MAINNET), 'ETH');
const usdcBase = bySymbol(sodax.swaps.getSupportedSwapTokensByChainId(ChainKeys.BASE_MAINNET), 'USDC');

In @sodax/sdk 2.1.0 the Robinhood Chain list holds ETH, bnUSD, SODA, and USDG. Stock Tokens arrive in the next release; see Stock Tokens.

4. Quote and swap

swap() runs the full lifecycle: it creates the intent on Robinhood Chain, verifies the transaction landed, relays it to the hub, and notifies the solver to fill on the destination network.

import type { SolverIntentQuoteRequest } from '@sodax/sdk';

// 0.01 ETH, built from the token's own decimals
const inputAmount = 10n ** BigInt(eth.decimals) / 100n;

// Quote: 0.01 ETH -> USDC on Base
const quoteResult = await sodax.swaps.getQuote({
  token_src: eth.address,
  token_dst: usdcBase.address,
  token_src_blockchain_id: ChainKeys.ROBINHOOD_MAINNET,
  token_dst_blockchain_id: ChainKeys.BASE_MAINNET,
  amount: inputAmount,
  quote_type: 'exact_input',
} satisfies SolverIntentQuoteRequest);

if (!quoteResult.ok) throw new Error('Quote failed');
const { quoted_amount } = quoteResult.value;

// `deadline` is an absolute Unix timestamp; getSwapDeadline turns an offset into one
const deadlineResult = await sodax.swaps.getSwapDeadline(300n); // 5 minutes from now
if (!deadlineResult.ok) throw new Error('Deadline lookup failed');

// Execute
const swapResult = await sodax.swaps.swap({
  params: {
    inputToken: eth.address,
    outputToken: usdcBase.address,
    inputAmount,
    minOutputAmount: (quoted_amount * 99n) / 100n, // your slippage policy
    deadline: deadlineResult.value,
    allowPartialFill: false,
    srcChainKey: ChainKeys.ROBINHOOD_MAINNET,
    dstChainKey: ChainKeys.BASE_MAINNET,
    srcAddress: await walletProvider.getWalletAddress(),
    dstAddress: '0x...', // recipient on Base
    solver: '0x0000000000000000000000000000000000000000',
    data: '0x',
  },
  walletProvider,
  timeout: 120_000,
});

if (swapResult.ok) {
  console.log('Submitted. Hub tx:', swapResult.value.intentDeliveryInfo.dstTxHash);
} else {
  console.error('Swap failed:', swapResult.error);
}

ok means the intent was created, relayed to the hub, and the solver notified, not that it was filled. Poll sodax.swaps.getStatus({ intent_tx_hash: intentDeliveryInfo.dstTxHash }) until the status is SolverIntentStatusCode.SOLVED, which is the only success signal. The main quickstart has the full polling loop, including why NOT_FOUND is not terminal. A few things to know on Robinhood Chain:

ETH needs no approval. It is the native gas token. Swapping an ERC-20 token on Robinhood Chain needs an allowance first; see Approvals.
Amounts follow token.decimals. ETH has 18 decimals, but USDG has 6. Always build amounts from the token’s own decimals.

Next steps

Swaps on Robinhood Chain: approvals, fees, Stock Tokens, manual orchestration.
Money Market on Robinhood Chain: supply and borrow with cross-network collateral.
Full API reference: Swaps in the SDK docs.

​1. Install

​2. Create a Robinhood Chain wallet provider

​3. Look up supported tokens

​4. Quote and swap

​Next steps

1. Install

2. Create a Robinhood Chain wallet provider

3. Look up supported tokens

4. Quote and swap

Next steps