Swap Instructions

Overview

The Swap Instructions endpoint returns individual Solana instructions instead of a serialized transaction. This allows you to:

Add your own instructions (e.g., Jito tips, custom fee transfers)
Combine multiple swaps in a single transaction
Have full control over transaction construction
Avoid deserializing/re-serializing transactions which adds latency

Note: This endpoint is only available for Solana chains. Mobula’s execution engine handles the instruction generation internally, supporting multiple DEXs and liquidity sources (Raydium, Orca, Pumpfun, etc.).

Query Parameters

chainId (required) — The blockchain identifier. Must be solana or solana:solana
tokenIn (required) — Address of the token to swap from (use So11111111111111111111111111111111111111111 for native SOL)
tokenOut (required) — Address of the token to swap to (use So11111111111111111111111111111111111111111 for native SOL)
amount (required if amountRaw not provided) — Human-readable amount of tokenIn to swap (e.g., "1.5" for 1.5 tokens)
amountRaw (required if amount not provided) — Raw amount as a string (e.g., "1500000000" for 1.5 SOL with 9 decimals)
walletAddress (required) — Wallet address that will execute the swap
slippage (optional) — Maximum acceptable slippage percentage (0-100). Default: 1
excludedProtocols (optional) — Comma-separated list of factory addresses to exclude from routing
onlyProtocols (optional) — Comma-separated list of tradable pool types to restrict routing
poolAddress (optional) — Specific pool address to use for the swap
priorityFee (optional) — Priority fee configuration. Can be auto, a preset (low, medium, high, veryHigh), or a number in microLamports per CU
computeUnitLimit (optional) — Compute unit limit. Can be true for dynamic or a specific number. Default: 400,000
jitoTipLamports (optional) — Jito tip amount in lamports for block engine priority
feePercentage (optional) — Fee percentage to charge on the swap (0.01 to 99). Fee is always taken from native SOL (deducted from the swap amount). At least one side of the swap must be native SOL. Must be used together with feeWallet.
feeWallet (optional) — Wallet address to receive fees. Required when feePercentage is set.

Usage Examples

Basic Swap Instructions

curl -X GET "https://api.mobula.io/api/2/swap/quoting-instructions?chainId=solana&tokenIn=So11111111111111111111111111111111111111111&tokenOut=EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v&amount=1&walletAddress=YourWalletAddress&slippage=1"

With Priority Fee

curl -X GET "https://api.mobula.io/api/2/swap/quoting-instructions?chainId=solana&tokenIn=So11111111111111111111111111111111111111111&tokenOut=EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v&amount=1&walletAddress=YourWalletAddress&slippage=1&priorityFee=high"

With Jito Tip

curl -X GET "https://api.mobula.io/api/2/swap/quoting-instructions?chainId=solana&tokenIn=So11111111111111111111111111111111111111111&tokenOut=EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v&amount=1&walletAddress=YourWalletAddress&slippage=1&jitoTipLamports=10000"

With Integration Fee

curl -X GET "https://api.mobula.io/api/2/swap/quoting-instructions?chainId=solana&tokenIn=So11111111111111111111111111111111111111111&tokenOut=EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v&amount=1&walletAddress=YourWalletAddress&slippage=1&feePercentage=1&feeWallet=FeeWalletAddressHere"

This example charges a 1% fee on the swap. The fee is deducted from native SOL and sent to your feeWallet via a SystemProgram.transfer instruction.

Response Format

{
  "data": {
    "amountOutTokens": "150.123456",
    "slippagePercentage": 1,
    "tokenIn": {
      "address": "So11111111111111111111111111111111111111111",
      "name": "Wrapped SOL",
      "symbol": "SOL",
      "decimals": 9,
      "logo": "https://metadata.mobula.io/assets/logos/solana_solana_So11111111111111111111111111111111111111111.webp"
    },
    "tokenOut": {
      "address": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "name": "USD Coin",
      "symbol": "USDC",
      "decimals": 6,
      "logo": "https://metadata.mobula.io/assets/logos/solana_solana_EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v.webp"
    },
    "requestId": "550e8400-e29b-41d4-a716-446655440000",
    "solana": {
      "instructions": {
        "computeBudgetInstructions": [
          {
            "programId": "ComputeBudget111111111111111111111111111111",
            "accounts": [],
            "data": "AgAAABAnAAAAAAAA"
          }
        ],
        "setupInstructions": [
          {
            "programId": "ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL",
            "accounts": [
              {
                "pubkey": "YourWalletAddress",
                "isSigner": true,
                "isWritable": true
              }
            ],
            "data": "..."
          }
        ],
        "swapInstructions": [
          {
            "programId": "675kPX9MHTjS2zt1qfr1NYHuzeLXfQM9H24wFSUt1Mp8",
            "accounts": [
              {
                "pubkey": "YourWalletAddress",
                "isSigner": true,
                "isWritable": true
              }
            ],
            "data": "..."
          }
        ],
        "cleanupInstructions": [
          {
            "programId": "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA",
            "accounts": [
              {
                "pubkey": "YourWalletAddress",
                "isSigner": false,
                "isWritable": true
              }
            ],
            "data": "..."
          }
        ],
        "addressLookupTableAddresses": [
          "GxS6FiQ3mNnAar9HGQ6mxP7t6FcwmHkU7peSeQDUHmpN"
        ]
      },
      "lastValidBlockHeight": 305123456,
      "recentBlockhash": "EkSnNWid2cvwEVnVx9aBqawnmiCNiDgp3gUdkDPTKN1N"
    }
  }
}

Response Fields

Data Object

amountOutTokens (string, optional) — Estimated output amount in tokens
slippagePercentage (number, optional) — Slippage percentage
tokenIn (object, optional) — Input token metadata
- address (string) — Token contract address
- name (string, optional) — Token name
- symbol (string, optional) — Token symbol
- decimals (number) — Token decimals
- logo (string | null, optional) — Token logo URL
tokenOut (object, optional) — Output token metadata
requestId (string) — Unique identifier for tracking this request
solana (object) — Solana instructions container
- instructions (object) — All instructions needed for the swap
  - computeBudgetInstructions (array, optional) — Instructions to set compute budget
  - setupInstructions (array, optional) — Setup instructions (e.g., create token accounts)
  - swapInstructions (array) — The swap instructions (can be multiple for multi-hop routes)
  - cleanupInstructions (array, optional) — Cleanup instructions (e.g., close token accounts)
  - addressLookupTableAddresses (array, optional) — ALT addresses for versioned transactions
- lastValidBlockHeight (number) — The last block height at which the blockhash is valid
- recentBlockhash (string) — Recent blockhash to use when building the transaction

Instruction Format

Each instruction contains:

programId (string) — The program that will process this instruction
accounts (array) — Account keys involved in the instruction
- pubkey (string) — Account public key
- isSigner (boolean) — Whether the account must sign
- isWritable (boolean) — Whether the account is writable
data (string) — Instruction data as base64 encoded string

Building a Transaction

After receiving instructions, you need to build and sign the transaction yourself:

import {
  Connection,
  TransactionMessage,
  VersionedTransaction,
  PublicKey,
  TransactionInstruction,
  AddressLookupTableAccount,
} from '@solana/web3.js';

const { solana, requestId } = response.data;

// Save requestId for support
console.log('Request ID:', requestId);

// Helper to convert instruction format
function toTransactionInstruction(ix) {
  return new TransactionInstruction({
    programId: new PublicKey(ix.programId),
    keys: ix.accounts.map(acc => ({
      pubkey: new PublicKey(acc.pubkey),
      isSigner: acc.isSigner,
      isWritable: acc.isWritable,
    })),
    data: Buffer.from(ix.data, 'base64'),
  });
}

// Build all instructions
const instructions = [];

// 1. Add compute budget instructions (if any)
if (solana.instructions.computeBudgetInstructions) {
  for (const ix of solana.instructions.computeBudgetInstructions) {
    instructions.push(toTransactionInstruction(ix));
  }
}

// 2. Add setup instructions (if any)
if (solana.instructions.setupInstructions) {
  for (const ix of solana.instructions.setupInstructions) {
    instructions.push(toTransactionInstruction(ix));
  }
}

// 3. Add YOUR custom instructions here (e.g., Jito tip, fee transfer)
// Example: Add a Jito tip
const JITO_TIP_ACCOUNTS = [
  '96gYZGLnJYVFmbjzopPSU6QiEV5fGqZNyN9nmNhvrZU5',
  'HFqU5x63VTqvQss8hp11i4wVV8bD44PvwucfZ2bU7gRe',
  // ... more tip accounts
];
const tipAccount = JITO_TIP_ACCOUNTS[Math.floor(Math.random() * JITO_TIP_ACCOUNTS.length)];
const tipInstruction = SystemProgram.transfer({
  fromPubkey: wallet.publicKey,
  toPubkey: new PublicKey(tipAccount),
  lamports: 10000, // 0.00001 SOL
});
instructions.push(tipInstruction);

// 4. Add the swap instructions (can be multiple for multi-hop routes)
if (solana.instructions.swapInstructions) {
  for (const ix of solana.instructions.swapInstructions) {
    instructions.push(toTransactionInstruction(ix));
  }
}

// 5. Add cleanup instructions (if any)
if (solana.instructions.cleanupInstructions) {
  for (const ix of solana.instructions.cleanupInstructions) {
    instructions.push(toTransactionInstruction(ix));
  }
}

// Fetch Address Lookup Tables (if any)
const addressLookupTables = [];
if (solana.instructions.addressLookupTableAddresses?.length > 0) {
  const connection = new Connection('YOUR_RPC_URL');
  for (const address of solana.instructions.addressLookupTableAddresses) {
    const result = await connection.getAddressLookupTable(new PublicKey(address));
    if (result.value) {
      addressLookupTables.push(result.value);
    }
  }
}

// Build the versioned transaction
const messageV0 = new TransactionMessage({
  payerKey: wallet.publicKey,
  recentBlockhash: solana.recentBlockhash,
  instructions,
}).compileToV0Message(addressLookupTables);

const transaction = new VersionedTransaction(messageV0);

// Sign the transaction
transaction.sign([wallet]);

// Send the transaction
const signature = await connection.sendTransaction(transaction);

// Confirm with lastValidBlockHeight
await connection.confirmTransaction({
  signature,
  blockhash: solana.recentBlockhash,
  lastValidBlockHeight: solana.lastValidBlockHeight,
});

console.log('Transaction confirmed:', signature);

Important Notes

Solana Only: This endpoint only works with Solana chains
Mobula Execution Engine: Instructions are generated by Mobula’s internal execution engine, which routes through multiple DEXs (Raydium, Orca, Pumpfun, etc.) for optimal pricing
Blockhash Expiry: The recentBlockhash and lastValidBlockHeight have a limited validity window (~150 blocks / ~1 minute). Build and send your transaction quickly.
ALT Required: For complex swaps, Address Lookup Tables are required. Always fetch and include them if addressLookupTableAddresses is provided.
Request ID: Keep the requestId for troubleshooting with Mobula support

Comparison with /swap/quoting

Feature	/swap/quoting	/swap/quoting-instructions
Returns	Serialized transaction	Individual instructions
Custom instructions	Need to deserialize	Direct insertion
Latency	Lower (ready to sign)	Slightly higher (need to build)
Flexibility	Limited	Full control
Chain support	Solana + EVM	Solana only
Use case	Simple swaps	Advanced integrations

Introduction

Market & Token Data

History - Prices & OHLCV Candles

Trades Data

Holders Data

Pulse API

Wallet APIs

Swap API

Metacore

Webhook

Misc

Overview

Query Parameters

Usage Examples

Basic Swap Instructions

With Priority Fee

With Jito Tip

With Integration Fee

Response Format

Response Fields

Data Object

Instruction Format

Building a Transaction

Important Notes

Comparison with /swap/quoting

Introduction

Market & Token Data

History - Prices & OHLCV Candles

Trades Data

Holders Data

Pulse API

Wallet APIs

Swap API

Metacore

Webhook

Misc

​Overview

​Query Parameters

​Usage Examples

​Basic Swap Instructions

​With Priority Fee

​With Jito Tip

​With Integration Fee

​Response Format

​Response Fields

​Data Object

​Instruction Format

​Building a Transaction

​Important Notes

​Comparison with /swap/quoting

Overview

Query Parameters

Usage Examples

Basic Swap Instructions

With Priority Fee

With Jito Tip

With Integration Fee

Response Format

Response Fields

Data Object

Instruction Format

Building a Transaction

Important Notes

Comparison with /swap/quoting