SMB-Onchain Setup

This guide covers the complete setup process for using arb-assist with SolanaMevBot On-Chain.

Overview

SMB-Onchain integration allows arb-assist to:

• Generate optimized TOML configuration files

• Dynamically update bot settings

• Control bot activation based on market conditions

• Manage priority fees and Jito tips

Prerequisites

Before starting, ensure you have:

• ✅ SMB-Onchain binary and license

• ✅ arb-assist installed in the same directory

• ✅ Encrypted wallet keypair

• ✅ Sufficient SOL for operations

Initial Setup

Step 1: Directory Structure

Your directory should look like:

~/smb/
├── smb-onchain          # SMB binary
├── arb-assist           # arb-assist binary
├── config.toml          # arb-assist config
├── xxx.xxx.xxx.xxx.license  # arb-assist license
└── wallet.key           # Encrypted private key

Step 2: Private Key Encryption

Security Warning: Never put unencrypted private keys on a VPS

1. Create temporary config locally:

# temp-config.toml
[wallet]
private_key = "your-base58-private-key-here"

[rpc]
url = "https://api.mainnet-beta.solana.com"

[bot]
compute_unit_limit = 400_000

[[routing.mint_config_list]]
mint = "So11111111111111111111111111111111111111112"
pump_pool_list = []

1. Encrypt the private key:

./smb-onchain run temp-config.toml
# This creates an encrypted wallet.key file

1. Transfer files to VPS:

• Copy wallet.key to your VPS

• Delete temp-config.toml (contains private key)

Step 3: Configure arb-assist

Create your config.toml:

# Connection settings
rpc_url = "https://your-rpc-endpoint"
grpc_url = "https://your-grpc-endpoint"
grpc_token = "your-token-if-needed"
grpc_engine = "yellowstone"

# Set mode to SMB
mode = "smb"

# Basic configuration
update_interval = 10000
mints_to_arb = [2, 2]
mints_to_rank = 20

# Output file name
output = "smb-config"  # Creates smb-config.toml

# SMB-specific RPC settings
config_rpc_url = "https://rpc-for-smb"
sending_rpc_urls = [
  "https://send-rpc-1",
  "https://send-rpc-2",
  "https://send-rpc-3",
]

# SMB-specific settings
[smb]
output = "smb-config"
max_retries = 0
enable_simple_send = false
cetiloan = true
merge_mints = true

[smb.jito_config]
min_profit = 10_000
use_min_profit = true
use_separate_tip_account = false

Running the System

Step 1: Start arb-assist

Using tmux:

tmux new -s arb-assist
ulimit -n 65536
./arb-assist

# Detach with Ctrl+B, then D

Using PM2:

cat > start-arb-assist.sh << 'EOF'
#!/bin/bash
ulimit -n 65536
exec ./arb-assist
EOF

chmod +x start-arb-assist.sh
pm2 start start-arb-assist.sh --name arb-assist

Step 2: Start SMB-Onchain

With automatic config reloading:

pm2 start smb-onchain --name smb --watch smb-config.toml -- run smb-config.toml

This setup ensures:

• SMB restarts when config changes

• Automatic adaptation to market conditions

• Continuous operation

Step 3: Monitor Operation

View logs:

# arb-assist logs
pm2 logs arb-assist

# SMB logs
pm2 logs smb

# Combined monitoring
pm2 monit

Configuration Details

Generated Config Structure

arb-assist generates a config like:

[bot]
merge_mints = true
compute_unit_limit = 600_000

[[routing.mint_config_list]]
mint = "TokenMintAddress1..."
pump_pool_list = ["PoolA...", "PoolB..."]
meteora_dlmm_pool_list = ["PoolC..."]
raydium_clmm_pool_list = ["PoolD..."]
lookup_table_accounts = ["ALUT1...", "ALUT2..."]
process_delay = 400

[[routing.mint_config_list]]
mint = "TokenMintAddress2..."
# ... more pools

[rpc]
url = "https://your-configured-rpc"

[spam]
enabled = true
sending_rpc_urls = ["rpc1", "rpc2", "rpc3"]
compute_unit_price = { strategy = "Random", from = 10000, to = 50000, count = 1 }
max_retries = 10

[jito]
enabled = true
block_engines = ["ny", "tokyo", "amsterdam"]
tip = { strategy = "Random", from = 5000, to = 20000, count = 1 }

[flashloan]
enabled = true

[wallet]
# Keypair path automatically included

Dynamic Updates

The config updates based on:

• Market activity levels

• Arbitrage profitability

• Network congestion

• Competition levels

Strategy Activation

Different strategies activate at different tiers:

Low Activity (Tier 0):

• Basic spam mode

• Low priority fees

• Minimal Jito usage

Medium Activity (Tier 1):

• Increased fees

• Jito bundles enabled

• More aggressive settings

High Activity (Tier 2):

• Maximum fees

• Premium services

• All strategies active

Advanced Features

Flash Loans (Cetiloan)

Enable borrowing for arbitrage:

[smb]
cetiloan = true

[flashloan]
enabled = true

Benefits:

• No upfront capital needed

• Larger arbitrage positions

• Higher potential profits

Mint Merging

Combine multiple arbitrage opportunities:

[smb]
merge_mints = true

This allows:

• Multiple mints per transaction

• Shared gas costs

• Complex arbitrage routes

Jito Integration

Configure Jito bundles:

[smb.jito_config]
ips = ["192.168.1.0/24"]  # Allowed IPs
min_profit = 10_000       # Minimum profit to use Jito
use_min_profit = true     # Enforce minimum
use_separate_tip_account = false

# Dynamic tips
dynamic_jito_tip_mode = "parsed"  # Learn from chain

Simple Send Mode

For testing or specific strategies:

[smb]
enable_simple_send = true

Performance Optimization

RPC Configuration

Use multiple RPCs for reliability:

# Main RPC for data
config_rpc_url = "https://premium-rpc.com"

# Multiple sending RPCs
sending_rpc_urls = [
  "https://fast-rpc-1.com",
  "https://fast-rpc-2.com", 
  "https://backup-rpc.com",
]

Compute Units

Adjust based on route complexity:

# In filter thresholds
max_cu_limit = 400_000   # Simple routes
max_cu_limit = 600_000   # Standard routes
max_cu_limit = 800_000   # Complex routes

Process Delays

Balance speed vs success rate:

process_delay = 200  # Aggressive
process_delay = 400  # Balanced
process_delay = 600  # Conservative

Monitoring & Maintenance

Key Metrics

Monitor these in SMB logs:

• Arbitrage success rate

• Average profit per trade

• Gas costs

• Failed transaction reasons

Common Log Messages

Successful Arbitrage:

[INFO] Arbitrage executed: Profit: 0.125 SOL, Gas: 0.005 SOL

Failed Transaction:

[WARN] Transaction failed: Slippage exceeded

No Opportunities:

[INFO] No profitable arbitrage found

Maintenance Tasks

Daily:

• Check logs for errors

• Monitor profit/loss

• Verify bot is running

Weekly:

• Review configuration effectiveness

• Update RPC endpoints if needed

• Check for SMB updates

Monthly:

• Analyze performance trends

• Optimize configuration

• Update software versions

Troubleshooting

Bot Not Starting

Config Not Found:

Error: Cannot find smb-config.toml

• Check arb-assist is running

• Verify output filename matches

Invalid Configuration:

Error: Failed to parse configuration

• Check TOML syntax

• Verify all required fields

No Trades Executing

Check:

1. Wallet has sufficient SOL

2. Config contains valid mints

3. Filter thresholds aren't too strict

4. RPC endpoints are working

High Failure Rate

Solutions:

1. Increase process_delay

2. Raise priority fees

3. Use Jito for competitive mints

4. Check RPC latency

Security Best Practices

1. Key Management

   • Always use encrypted keypairs

   • Never share private keys

   • Rotate keys periodically

2. Access Control

   • Restrict server access

   • Use firewall rules

   • Monitor login attempts

3. Monitoring

   • Set up alerts for failures

   • Track wallet balance

   • Monitor for suspicious activity

Integration Checklist

• SMB-onchain installed and licensed

• arb-assist configured for SMB mode

• Private key encrypted

• RPC endpoints configured

• GRPC connection established

• Test configuration generated

• Bot successfully executing trades

• Monitoring in place

• Backup procedures defined