The Transaction endpoint returns a pre-built transaction that is ready to be signed by the payer wallet based on the quote provided.
The swap transaction includes the following instructions:
Priority Fee Price & Units
Input & Output associated token account creation
Wrap & Unwrap of SOL accounts
Example
import { Connection, Keypair, VersionedTransaction } from '@solana/web3.js';
const uri = `https://api.fluxbeam.xyz/v1/swap/transaction`
const resp = await(await fetch(uri, {
method: "POST",
headers: {"Content-Type": "application/json"},
body: JSON.strinfgify({
//
})
})).json()
//Decode the transaction from base64
const swapTransactionBuf = Buffer.from(resp.transaction, 'base64');
const transaction = VersionedTransaction.deserialize(swapTransactionBuf);
console.log("Transaction",transaction);
//Sign the transaction with the payer wallet
transaction.sign([wallet.payer]);
//Execute the transaction
const client= new Connection('{RPC_URL}');
const sig = client.sendRawTransaction(transaction.serialize(), {maxRetries: 3, skipPreflight: true})
console.log("Transaction Signature:", sig)
Swap Instruction
The instruction endpoint will return the FluxBeam swap instruction for a given quote. The instruction should be included within a transaction that handles the priority fee & associated token account calls.
Example
import { Connection, Keypair, Transaction} from '@solana/web3.js';
const uri = `https://api.fluxbeam.xyz/v1/instruction`
const resp = await(await fetch(uri, {
method: "POST",
headers: {"Content-Type": "application/json"},
body: JSON.strinfgify({
quote, //Response from /quote
userPublicKey: "{PAYER_WALLET_ADDRESS}",
priorityFeeLamports: 100,
wrapAndUnwrapSol: true
})
})).json()
//Decode the instruction
const ix = new TransactionInstruction({
programId: new PublicKey(instruction.programId),
keys: instruction.accounts.map((key) => ({
pubkey: new PublicKey(key.Pubkey),
isSigner: key.IsSigner,
isWritable: key.IsWritable,
})),
data: Buffer.from(instruction.data, "base64"),
//Create new transaction
const transaction = new Transaction();
//Add pre-swap instructions
// transaction.add(ataIx)
//Add swap instruction
transaction.add(ix)
//Add post-swap instructions
// transaction.add(wSolClose)
console.log("Transaction",transaction);
//Sign the transaction with the payer wallet
transaction.sign([wallet.payer]);
//Execute the transaction
const client= new Connection('{RPC_URL}');
const sig = client.sendRawTransaction(transaction.serialize(), {maxRetries: 3, skipPreflight: true})
console.log("Transaction Signature:", sig)
👨💻
↔️
Get a quote for a token swap
get
Query parameters
inputMintstringRequired
Source token
outputMintstringRequired
Destination token
amountintegerRequired
Source token input amount
slippageBpsintegerOptional
Slippage in BPS
Responses
200
Returns a swap quote
application/json
get
GET /v1/quote HTTP/1.1
Host: api.fluxbeam.xyz
Accept: */*
