solana-mev

A flash loan arbitrage bot for Solana using Kamino Finance, Jupiter swaps, and Jito bundles.

How It Works

1. Borrows tokens instantly via a Kamino Finance flash loan
2. Executes a two-leg swap through Jupiter (token1 → token2 → token1)
3. Repays the flash loan + fee
4. Keeps the profit
5. Submits transactions via Jito block engine for MEV protection
6. A 10% developer fee is taken from profit on each successful arbitrage

All of this happens atomically in a single transaction — if any step fails, the whole transaction reverts and you lose nothing except the transaction fee.

Requirements

• Linux x86_64
• A Solana wallet keypair JSON file
• A funded wallet (SOL for transaction fees, and a token account for your chosen mint)
• A Jupiter API key (https://portal.jup.ag)
• A fast RPC endpoint (Helius, Triton, QuickNode recommended)

Setup

1. Download the binary

Download solana-mev from the releases page and make it executable:

chmod +x solana-mev

2. Create your config file

Create a file called config.toml in the same folder:

# Path to your Solana wallet keypair JSON file
keypair = "/home/user/.config/solana/id.json"

# Token pair to arb (these are USDC and wSOL)
token_mint1 = "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"
token_mint2 = "So11111111111111111111111111111111111111112"

# Flash loan amount in tokens (not lamports)
amount = 1000.0

# Minimum profit required before executing (in tokens)
min_profit = 0.5

# Your Jupiter API key from https://portal.jup.ag
jupiter_api_key = "jup_your_key_here"

# Your RPC endpoint
rpc_url = "https://your-rpc-endpoint.com"

# Jito tip in lamports (higher = more likely to land)
jito_tip_lamports = 10000

# Slippage in basis points (50 = 0.5%, 100 = 1%)
slippage_bps = 50

# Milliseconds to wait between quote checks
sleep_ms = 150

3. Run it

./solana-mev run config.toml

Supported Token Pairs

Currently supported as the flash loan token (token_mint1):

Token	Mint Address
USDC	EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
wSOL	So11111111111111111111111111111111111111112

token_mint2 can be any token Jupiter supports.

Configuration Reference

Field	Required	Default	Description
keypair	Yes	—	Path to your wallet keypair JSON
token_mint1	Yes	—	Flash loan token mint address
token_mint2	Yes	—	Second token mint address
amount	Yes	—	Flash loan size in tokens
min_profit	No	0	Minimum profit to execute in tokens
jupiter_api_key	Yes	—	Jupiter API key
rpc_url	Yes	—	Solana RPC endpoint URL
jito_tip_lamports	No	10000	Jito tip in lamports
slippage_bps	No	50	Slippage tolerance in basis points
sleep_ms	No	150	Delay between quote fetches in ms

Tips

• Use a private or dedicated RPC endpoint — public RPCs are too slow for arb
• Start with a small amount to test before scaling up
• Lower sleep_ms means more quote checks per second but more RPC load
• Higher jito_tip_lamports increases your chance of landing bundles in competitive slots
• Set min_profit above 0 to avoid executing marginal trades that might fail due to slippage

Fees

• Kamino flash loan fee: 0.001% of borrowed amount
• Jupiter swap fee: included in quote
• Jito tip: configurable via jito_tip_lamports
• Developer fee: 10% of profit per successful arbitrage

Disclaimer

This software is provided as-is with no guarantees. Arbitrage is competitive and profits are not guaranteed. Use at your own risk. Never deposit more than you can afford to lose.