Jupiter-go

Go library to interact with Jupiter to get quotes, perform swaps and send them on-chain

This library provides a simple way to interact with the Jupiter API to get quotes and perform swaps.

It also provides:

• A solana client to send the swap transaction on-chain and check its status.
• A solana monitor to wait for a transaction to reach a specific commitment status.

Installation

go get github.com/ilkamo/jupiter-go

Usage

Here's a simple example to get a quote and the related swap instructions from Jupiter:

package main

import (
	"context"

	"github.com/ilkamo/jupiter-go/jupiter"
)

func main() {
	jupClient, err := jupiter.NewClientWithResponses(jupiter.DefaultAPIURL)
	// handle the error

	ctx := context.TODO()

	slippageBps := 250

	// Get the current quote for a swap.
	// Ensure that the input and output mints are valid.
	// The amount is the smallest unit of the input token.
	quoteResponse, err := jupClient.GetQuoteWithResponse(ctx, &jupiter.GetQuoteParams{
		InputMint:   "So11111111111111111111111111111111111111112",
		OutputMint:  "WENWENvqqNya429ubCdR81ZmD69brwQaaBYY6p3LCpk",
		Amount:      100000,
		SlippageBps: &slippageBps,
	})
	// handle the error
	
	quote := quoteResponse.JSON200

	// More info: https://station.jup.ag/docs/apis/troubleshooting
	prioritizationFeeLamports := jupiter.SwapRequest_PrioritizationFeeLamports{}
	if err = prioritizationFeeLamports.UnmarshalJSON([]byte(`"auto"`)); err != nil {
		// handle the error
	}

	dynamicComputeUnitLimit := true
	// Get instructions for a swap.
	// Ensure your public key is valid.
	swapResponse, err := jupClient.PostSwapWithResponse(ctx, jupiter.PostSwapJSONRequestBody{
		PrioritizationFeeLamports: &prioritizationFeeLamports,
		QuoteResponse:             *quote,
		UserPublicKey:             "{YOUR_PUBLIC_KEY}",
		DynamicComputeUnitLimit:   &dynamicComputeUnitLimit,
	})
	// handle the error
	
	swap := swapResponse.JSON200
}

Once you have the swap instructions, you can use the solana client to sign and send the transaction on-chain. Please remember, when a transaction is sent on-chain it doesn't mean that the swap is completed. The instruction could error, that's why you should monitor the transaction status and confirm the transaction is finalized without errors.

package main

import (
	"time"

	"github.com/ilkamo/jupiter-go/jupiter"
	"github.com/ilkamo/jupiter-go/solana"
)

func main() {
	// ... previous code
	// swap := swapResponse.JSON200

	// Create a wallet from private key
	walletPrivateKey := "{YOUR_PRIVATE_KEY}"
	wallet, err := solana.NewWalletFromPrivateKeyBase58(walletPrivateKey)
	// handle the error

	// Create a Solana client. Change the URL to the desired Solana node.
	solanaClient, err := solana.NewClient(wallet, "https://api.mainnet-beta.solana.com")
	// handle the error

	// Sign and send the transaction.
	signedTx, err := solanaClient.SendTransactionOnChain(ctx, swap.SwapTransaction)
	// handle the error

	// Wait a bit to let the transaction propagate to the network.
	// This is just an example and not a best practice.
	// You could use a ticker or initialize a monitor to wait for the transaction to be confirmed.
	time.Sleep(20 * time.Second)

	// Get the status of the transaction (pull the status from the blockchain at intervals 
	// until the transaction is confirmed).
	confirmed, err := solanaClient.CheckSignature(ctx, signedTx)
	// handle the error
}

A full swap example is available in the examples/swap folder.

A transaction monitoring example using websocket is available in the examples/txmonitor folder.

Jupiter client

The Jupiter client is generated from the official Jupiter openapi definition and provides the following methods to interact with the Jupiter API:

// GetIndexedRouteMapWithResponse request
GetIndexedRouteMapWithResponse(
	ctx context.Context, 
	params *GetIndexedRouteMapParams, 
	reqEditors ...RequestEditorFn, 
) (*GetIndexedRouteMapResponse, error)

// GetProgramIdToLabelWithResponse request
GetProgramIdToLabelWithResponse(
	ctx context.Context, 
	reqEditors ...RequestEditorFn,
) (*GetProgramIdToLabelResponse, error)

// GetQuoteWithResponse request
GetQuoteWithResponse(
	ctx context.Context, 
	params *GetQuoteParams, 
	reqEditors ...RequestEditorFn, 
) (*GetQuoteResponse, error)

// PostSwapWithBodyWithResponse request with any body
PostSwapWithBodyWithResponse(
	ctx context.Context, 
	contentType string, 
	body io.Reader, 
	reqEditors ...RequestEditorFn, 
) (*PostSwapResponse, error)

PostSwapWithResponse(
	ctx context.Context, 
	body PostSwapJSONRequestBody, 
	reqEditors ...RequestEditorFn,
) (*PostSwapResponse, error)

// PostSwapInstructionsWithBodyWithResponse request with any body
PostSwapInstructionsWithBodyWithResponse(
	ctx context.Context, 
	contentType string, 
	body io.Reader, 
	reqEditors ...RequestEditorFn,
) (*PostSwapInstructionsResponse, error)

PostSwapInstructionsWithResponse(
	ctx context.Context, 
	body PostSwapInstructionsJSONRequestBody, 
	reqEditors ...RequestEditorFn, 
) (*PostSwapInstructionsResponse, error)

GetTokensWithResponse(
	ctx context.Context, 
	reqEditors ...RequestEditorFn, 
) (*GetTokensResponse, error)

Solana client

The Solana client provides the following methods to interact with the Solana blockchain:

// SendTransactionOnChain signs and sends a transaction on-chain.
SendTransactionOnChain(
	ctx context.Context, 
	txBase64 string,
) (TxID, error)

// CheckSignature checks the status of a transaction on-chain.
CheckSignature(
	ctx context.Context, 
	tx TxID,
) (bool, error)

// GetTokenAccountBalance returns the balance of an SPL token account.
GetTokenAccountBalance(
	ctx context.Context, 
	tokenAccount string, 
) (TokenAccount, error)

// Close closes the client.
Close() error

Solana monitor

The Solana monitor provides the following methods to monitor the Solana blockchain:

// WaitForCommitmentStatus waits for a transaction to reach a specific commitment status.
WaitForCommitmentStatus(
    context.Context, 
    TxID, 
    CommitmentStatus,
) (MonitorResponse, error)

License

This library is licensed under the MIT License - see the LICENSE file for details.

Donate

If you find this library useful and want to support its development, consider donating some JUP/Solana to the following address:

BXzmfHxfEMcMj8hDccUNdrwXVNeybyfb2iV2nktE1VnJ