Developer Overview

npm install @omnipair/program-interface @coral-xyz/anchor @solana/web3.js

import { Program, AnchorProvider } from "@coral-xyz/anchor";
import { Connection, PublicKey } from "@solana/web3.js";
import { IDL, Omnipair, PROGRAM_ID } from "@omnipair/program-interface";

// Create connection and provider
const connection = new Connection("https://api.mainnet-beta.solana.com");
const provider = new AnchorProvider(connection, wallet, {});

// Initialize typed program instance
const program = new Program<Omnipair>(IDL, PROGRAM_ID, provider);

import { derivePairAddress } from "@omnipair/program-interface";

// Derive pair PDA
const token0 = new PublicKey("So11111111111111111111111111111111111111112"); // SOL
const token1 = new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"); // USDC
const [pairAddress] = derivePairAddress(token0, token1);

// Fetch pair account
const pair = await program.account.pair.fetch(pairAddress);

console.log("Reserve0:", pair.reserve0.toString());
console.log("Reserve1:", pair.reserve1.toString());
console.log("Total Debt0:", pair.totalDebt0.toString());

// Build swap instruction
const swapIx = await program.methods
  .swap({
    amountIn: new BN(1_000_000), // 1 USDC
    minAmountOut: new BN(0),     // Set appropriate slippage
    isToken0In: false,           // Swapping token1 (USDC) for token0 (SOL)
  })
  .accounts({
    pair: pairAddress,
    // ... other accounts
  })
  .instruction();

// Sign and send transaction
const tx = new Transaction().add(swapIx);
const signature = await sendAndConfirmTransaction(connection, tx, [wallet]);