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OKX DEX Integration

Solana Agent Kit provides comprehensive integration with OKX DEX for token swapping, price quotes, and market data. This documentation covers the available actions and tools for interacting with OKX DEX.

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Overview

OKX DEX integration allows you to:
  • Fetch chain data and supported tokens
  • Get price quotes for token swaps
  • Execute token swaps with customizable slippage
  • View available liquidity sources
  • Create LangChain tools for AI agent integration

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Actions

Actions provide high-level functionality for common OKX DEX operations.

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Chain Data

The OKX_DEX_CHAIN_DATA action retrieves information about blockchain networks supported by OKX DEX. 
import { SolanaAgentKit } from "solana-agent-kit";

// Example usage
const agent = new SolanaAgentKit(/* config */);
const result = await agent.methods.executeAction("OKX_DEX_CHAIN_DATA", {});

// Result
{
  status: "success",
  summary: {
    chains: [
      {
        symbol: "SOL",
        name: "Solana",
        address: "So11111111111111111111111111111111111111112",
      },
      // Other chains...
    ],
  },
}

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Tokens

The OKX_DEX_TOKENS action lists all tokens supported by OKX DEX. 
const result = await agent.methods.executeAction("OKX_DEX_TOKENS", {});

// Result
{
  status: "success",
  summary: {
    tokens: [
      {
        symbol: "SOL",
        name: "Solana",
        address: "So11111111111111111111111111111111111111112",
      },
      {
        symbol: "USDC",
        name: "USD Coin",
        address: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      },
      // Other tokens...
    ],
  },
}

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Liquidity

The OKX_DEX_LIQUIDITY action retrieves available liquidity sources supported by OKX DEX. 
const result = await agent.methods.executeAction("OKX_DEX_LIQUIDITY", {});

// Result
{
  status: "success",
  summary: {
    liquidity: [
      {
        name: "Orca",
        type: "amm",
        // Additional details...
      },
      // Other liquidity sources...
    ],
  },
}

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Quote

The OKX_DEX_QUOTE action provides price quotes for token swaps. 
const result = await agent.methods.executeAction("OKX_DEX_QUOTE", {
  fromToken: "sol",
  toToken: "usdc",
  amount: 0.1,
  slippage: "0.001", // Optional, default is 0.001 (0.1%)
});

// Result
{
  status: "success",
  summary: {
    fromToken: "SOL",
    toToken: "USDC",
    fromAmount: 0.1,
    toAmount: 10.5,
    exchangeRate: 105,
    priceImpact: "0.01%",
  },
}

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Swap

The OKX_DEX_SWAP action executes token swaps on OKX DEX. 
const result = await agent.methods.executeAction("OKX_DEX_SWAP", {
  fromToken: "sol",
  toToken: "usdc",
  amount: 0.1,
  slippage: "0.001", // Optional, default is 0.001 (0.1%)
});

// Result
{
  status: "success",
  summary: {
    fromToken: "SOL",
    toToken: "USDC",
    fromAmount: 0.1,
    toAmount: 10.5,
    exchangeRate: 105,
    priceImpact: "0.01%",
    txId: "5KtPn3...",
    explorerUrl: "https://www.okx.com/web3/explorer/sol/tx/5KtPn3...",
  },
}

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LangChain Tools

For AI agent integration with LangChain, the following tools are available:

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Get Chain Data Tool

import { createOKXDexGetChainDataTool } from "solana-agent-kit";

const chainDataTool = createOKXDexGetChainDataTool(agent);

// Tool output (JSON string):
{
  "chains": [
    {
      "symbol": "SOL",
      "name": "Solana",
      "address": "So11111111111111111111111111111111111111112"
    }
    // Other chains...
  ]
}

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Get Tokens Tool

import { createOKXDexGetTokensTool } from "solana-agent-kit";

const tokensTool = createOKXDexGetTokensTool(agent);

// Tool output (JSON string):
{
  "tokens": [
    {
      "symbol": "SOL",
      "name": "Solana",
      "address": "So11111111111111111111111111111111111111112"
    },
    {
      "symbol": "USDC",
      "name": "USD Coin",
      "address": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"
    }
    // Other tokens...
  ]
}

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Get Liquidity Tool

import { createOKXDexGetLiquidityTool } from "solana-agent-kit";

const liquidityTool = createOKXDexGetLiquidityTool(agent);

// Tool output (JSON string):
{
  "sources": [
    {
      "name": "Orca",
      "type": "amm"
    }
    // Other liquidity sources...
  ]
}

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Get Quote Tool

import { createOKXDexGetQuoteTool } from "solana-agent-kit";

const quoteTool = createOKXDexGetQuoteTool(agent);

// Tool input:
{
  fromTokenAddress: "So11111111111111111111111111111111111111112",
  toTokenAddress: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  amount: "100000000", // 0.1 SOL in lamports
  slippage: "0.5" // Optional
}

// Tool output (JSON string):
{
  "fromToken": "SOL",
  "toToken": "USDC",
  "fromAmount": 0.1,
  "toAmount": 10.5,
  "exchangeRate": 105,
  "priceImpact": "0.01%"
}

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Execute Swap Tool

import { createOKXDexExecuteSwapTool } from "solana-agent-kit";

const swapTool = createOKXDexExecuteSwapTool(agent);

// Tool input:
{
  fromTokenAddress: "So11111111111111111111111111111111111111112",
  toTokenAddress: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  amount: "100000000", // 0.1 SOL in lamports
  slippage: "0.5", // Optional
  autoSlippage: false, // Optional
  maxAutoSlippageBps: "100", // Optional
  userWalletAddress: "FzwqxL67..." // Optional
}

// Tool output (JSON string):
{
  "status": "success",
  "summary": {
    "fromToken": "SOL",
    "toToken": "USDC",
    "fromAmount": 0.1,
    "toAmount": 10.5,
    "exchangeRate": 105,
    "priceImpact": "0.01%",
    "txId": "5KtPn3...",
    "explorerUrl": "https://www.okx.com/web3/explorer/sol/tx/5KtPn3..."
  }
}

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Confirm Swap Tool

import { createOKXDexConfirmSwapTool, setPendingSwap } from "solana-agent-kit";

// First, set a pending swap
setPendingSwap({
  fromTokenAddress: "So11111111111111111111111111111111111111112",
  toTokenAddress: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  amount: "100000000",
  slippage: "0.5"
});

// Then create and use the confirm tool
const confirmTool = createOKXDexConfirmSwapTool(agent);

// Tool output (JSON string):
{
  "status": "success",
  "summary": {
    "fromToken": "SOL",
    "toToken": "USDC",
    "fromAmount": 0.1,
    "toAmount": 10.5,
    "txId": "5KtPn3...",
    "explorerUrl": "https://www.okx.com/web3/explorer/sol/tx/5KtPn3..."
  }
}

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Token Addresses

Here are some common token addresses for Solana: 
const TOKEN_ADDRESSES = {
  sol: "So11111111111111111111111111111111111111112",
  usdc: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  usdt: "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
  wif: "2222222222222222222222222222222222222222222222222222222222222222",
};

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Amount Conversion

When working with token amounts, you need to convert between human-readable amounts and base units (like lamports for SOL): 
// Convert from human-readable to base units
function toBaseUnits(amount, decimals) {
  return (amount * Math.pow(10, decimals)).toString();
}

// For SOL (9 decimals)
const solBaseUnits = toBaseUnits(0.1, 9); // "100000000"

// For USDC (6 decimals)
const usdcBaseUnits = toBaseUnits(10, 6); // "10000000"

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Error Handling

All actions and tools include error handling. Here’s an example of handling errors: 
try {
  const result = await agent.methods.executeAction("OKX_DEX_SWAP", {
    fromToken: "sol",
    toToken: "usdc",
    amount: 0.1,
  });
  
  if (result.status === "error") {
    console.error("Swap failed:", result.message);
    // Handle error
  } else {
    console.log("Swap successful:", result.summary);
    // Process success
  }
} catch (error) {
  console.error("Unexpected error:", error.message);
  // Handle unexpected errors
}

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Advanced Features

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Auto Slippage

You can enable auto slippage for potentially better swap rates: 
const result = await executeSwap(
  agent,
  fromTokenAddress,
  toTokenAddress,
  amount,
  "0.5", // Default slippage
  true, // Enable auto slippage
  "100" // Maximum auto slippage in basis points (1%)
);

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Custom Wallet Address

You can specify a custom wallet address for the swap: 
const result = await executeSwap(
  agent,
  fromTokenAddress,
  toTokenAddress,
  amount,
  "0.5",
  false,
  "100",
  "your_custom_wallet_address"
);

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Integration with AI Agents

For AI agents built with LangChain, you can register these tools: 
import { createOpenAI } from "langchain/chat_models/openai";
import { AgentExecutor, createStructuredChatAgent } from "langchain/agents";

// Create LLM
const llm = createOpenAI({
  temperature: 0,
  modelName: "gpt-4",
});

// Create tools
const tools = [
  createOKXDexGetTokensTool(agent),
  createOKXDexGetQuoteTool(agent),
  createOKXDexExecuteSwapTool(agent),
];

// Create agent
const agent = createStructuredChatAgent({
  llm,
  tools,
});

const agentExecutor = new AgentExecutor({
  agent,
  tools,
});

// Run agent
const result = await agentExecutor.invoke({
  input: "I want to swap 0.1 SOL to USDC",
});

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Best Practices

  1. Amount Validation: Always verify that amounts are positive and within acceptable ranges.
  2. Slippage Control: Use appropriate slippage values depending on token volatility.
  3. Error Handling: Implement comprehensive error handling for all operations.
  4. Gas Considerations: Make sure your wallet has enough SOL for transaction fees.
  5. User Confirmation: For UIs, always show and confirm quotes before executing swaps.

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Troubleshooting

Common issues and their solutions:
  1. Insufficient Funds: Make sure your wallet has enough tokens for the swap.
  2. Price Impact Too High: Try reducing the amount or increasing slippage.
  3. Invalid Token Address: Double-check token addresses or use predefined constants.
  4. Failed Transaction: Check chain congestion and try again with higher slippage.

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Resources