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 way to send the swap transaction on-chain using the Solana client.

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)
	if err != nil {
		// handle me
	}

	ctx := context.TODO()

	slippageBps := 250

	// Get the current quote for a swap
	quoteResponse, err := jupClient.GetQuoteWithResponse(ctx, &jupiter.GetQuoteParams{
		InputMint:   "So11111111111111111111111111111111111111112",
		OutputMint:  "WENWENvqqNya429ubCdR81ZmD69brwQaaBYY6p3LCpk",
		Amount:      100000,
		SlippageBps: &slippageBps,
	})
	if err != nil {
		// handle me
	}
	
	if quoteResponse.JSON200 == nil {
        // handle me 
	}
	
	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 me
	}

	dynamicComputeUnitLimit := true
	// Get instructions for a swap
	swapResponse, err := jupClient.PostSwapWithResponse(ctx, jupiter.PostSwapJSONRequestBody{
		PrioritizationFeeLamports: &prioritizationFeeLamports,
		QuoteResponse:             *quote,
		UserPublicKey:             "the public key of your wallet",
		DynamicComputeUnitLimit:   &dynamicComputeUnitLimit,
	})
	if err != nil {
		// handle me
	}

	if swapResponse.JSON200 == nil {
		// handle me
	}
	
	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)
	if err != nil {
		// handle me
	}

	// Create a Solana client
	solanaClient, err := solana.NewClient(wallet, "https://api.mainnet-beta.solana.com")
	if err != nil {
		// handle me
	}

	// Sign and send the transaction
	signedTx, err := solanaClient.SendTransactionOnChain(ctx, swap.SwapTransaction)
	if err != nil {
		// handle me
	}

	// 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 wait until we implement the WebSocket monitoring ;)
	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)
	if err != nil {
		panic(err)
	}
}

A full swap example is available in the examples 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)

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)

TODOs

• Add more examples
• Add more tests
• Use WebSockets to monitor the transaction status

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