A high-performance Python SDK for low-latency Solana DEX trading bots. Built for speed and efficiency, it enables seamless, high-throughput interaction with PumpFun, Pump AMM (PumpSwap), Bonk, Meteora DAMM v2, Raydium AMM v4, and Raydium CPMM for latency-critical trading strategies.

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• ✨ Features
• 📦 Installation
• 🛠️ Usage Examples
  • 📋 Example Usage
  • ⚡ Trading Parameters
  • 📊 Usage Examples Summary Table
  • ⚙️ SWQoS Service Configuration
  • 🔧 Middleware System
  • 🔍 Address Lookup Tables
  • 🔍 Nonce Cache
• 💰 Cashback Support (PumpFun / PumpSwap)
• 🛡️ MEV Protection Services
• 📁 Project Structure
• 📄 License
• 💬 Contact
• ⚠️ Important Notes

This SDK is available in multiple languages:

sol-trade-sdk-python brings the FnZero Solana trading SDK to Python. It is built for async trading bots, copy-trading pipelines, sniper bots, research automation, and backend services that need low-latency Solana DEX trade construction with Rust SDK behavior parity.

PyPI package: sol-trade-sdk==0.1.5

This release refreshes PumpFun V2 and USDC quote-pool handling, keeps the default RPC submit lane active alongside SWQoS lanes, and aligns Raydium CPMM fixed-output swaps with the on-chain swap_base_out instruction. Trade execution requires a caller-supplied recent_blockhash or durable nonce; hot-path execution does not query RPC for blockhash, account, or balance data.

This SDK now tracks the Rust SDK v4.0.21 public behavior for high-level trade intent APIs and SWQoS provider coverage. New code can use buy_simple / sell_simple with AccountPolicy, BuyAmount, and SellAmount; these convert to the existing buy / sell params without removing the legacy API. SWQoS coverage includes the Rust Solami type and defaults (beam.solami.dev:11000, min tip 0.0001 SOL); live Solami submit uses the main QUIC client path and requires the same base58 Solana keypair api token model as Rust. Explicit SWQoS routes still keep the default RPC lane appended. NextBlock is still filtered by the Rust parity blacklist unless Rust changes that behavior. Legacy extended provider classes such as Triton, QuickNode, Syndica, Figment, and Alchemy are kept only for source compatibility and are not part of Rust v4.0.21 trading provider parity.

1. PumpFun Trading: Unified buy, sell, and buy_exact_quote_in flow with automatic legacy or V2 instruction selection for SOL and USDC quote pools
2. PumpSwap Trading: Support for PumpSwap pool trading operations
3. Bonk Trading: Support for Bonk trading operations
4. Raydium CPMM Trading: Support for Raydium CPMM (Concentrated Pool Market Maker) trading operations
5. Raydium AMM V4 Trading: Support for Raydium AMM V4 (Automated Market Maker) trading operations
6. Meteora DAMM V2 Trading: Support for Meteora DAMM V2 (Dynamic AMM) trading operations
7. Multiple MEV Protection: Support for the Rust v4.0.21 SWQoS set, including Jito, ZeroSlot, Temporal, Bloxroute, FlashBlock, BlockRazor, Node1, Astralane, Stellium, Lightspeed, Soyas, Speedlanding, Helius, Solami, and Default RPC
8. Concurrent Trading: Submit through every configured SWQoS provider plus the default RPC lane; the first accepted result can return early while slower routes continue submitting
9. Unified Trading Interface: Use unified trading protocol types for trading operations, including Rust-parity buy_simple / sell_simple intent params
10. Middleware System: Support for custom instruction middleware to modify, add, or remove instructions before transaction execution
11. Shared Infrastructure: Share expensive RPC and SWQoS clients across multiple wallets for reduced resource usage
12. Hot-Path RPC Boundary: Trade execution uses caller-supplied blockhash or durable nonce and never queries RPC for blockhash, account, or balance data

Clone this project to your project directory:

cd your_project_root_directory
git clone https://github.com/0xfnzero/sol-trade-sdk-python

Install dependencies:

cd sol-trade-sdk-python
pip install -e .

Or add to your requirements.txt:

sol-trade-sdk @ ./sol-trade-sdk-python

Or add to your pyproject.toml:

[project]
dependencies = [
    "sol-trade-sdk @ ./sol-trade-sdk-python",
]

pip install sol-trade-sdk==0.1.5

For the high-level intent API, see Simple Trading. It shows SimpleBuyParams.new, BuyAmount.with_max_input, AccountPolicy.AUTO, and the conversion to legacy TradeBuyParams.

You can refer to Example: Create TradingClient Instance.

Method 1: Simple (single wallet)

import asyncio
from sol_trade_sdk import TradingClient, TradeConfig, SwqosConfig, SwqosRegion

async def main():
    # Wallet
    payer = Keypair.from_secret_key(/* your keypair */)
    
    # RPC URL
    rpc_url = "https://mainnet.helius-rpc.com/?api-key=xxxxxx"
    
    # Multiple SWQoS services can be configured
    swqos_configs = [
        SwqosConfig(type="Default", rpc_url=rpc_url),
        SwqosConfig(type="Jito", uuid="your_uuid", region=SwqosRegion.FRANKFURT),
        SwqosConfig(type="Bloxroute", api_token="your_api_token", region=SwqosRegion.FRANKFURT),
        SwqosConfig(type="Astralane", api_key="your_api_key", region=SwqosRegion.FRANKFURT),
    ]
    
    # Create TradeConfig instance
    trade_config = TradeConfig(rpc_url, swqos_configs)
    
    # Create TradingClient
    client = TradingClient(payer, trade_config)

asyncio.run(main())

Temporal uses HTTP/3 QUIC first and Binary Batch HTTP as its default fallback. BlockRazor uses gRPC SendBinaryTransaction first and JSON HTTP as fallback. Astralane uses persistent QUIC first and Binary HTTP as fallback. Explicit transport settings force one protocol; a custom URL without a transport remains an explicit HTTP route.

Method 2: Shared infrastructure (multiple wallets)

For multi-wallet scenarios, create the infrastructure once and share it across wallets. See Example: Shared Infrastructure.

from sol_trade_sdk import TradingInfrastructure, InfrastructureConfig

# Create infrastructure once (expensive)
infra_config = InfrastructureConfig(rpc_url, swqos_configs)
infrastructure = TradingInfrastructure(infra_config)

# Create multiple clients sharing the same infrastructure (fast)
client1 = TradingClient.from_infrastructure(payer1, infrastructure)
client2 = TradingClient.from_infrastructure(payer2, infrastructure)

from sol_trade_sdk import GasFeeStrategy

# Create GasFeeStrategy instance
gas_fee_strategy = GasFeeStrategy()
# Set global strategy
gas_fee_strategy.set_global_fee_strategy(150000, 150000, 500000, 500000, 0.001, 0.001)

from sol_trade_sdk import (
    AccountPolicy,
    BuyAmount,
    DexType,
    SimpleBuyParams,
    TradeTokenType,
    simple_buy_params_to_trade_buy_params,
)

simple = (
    SimpleBuyParams.new(
        DexType.PUMPSWAP,
        TradeTokenType.WSOL,
        mint_pubkey,
        BuyAmount.with_max_input(buy_sol_amount),
        {"type": "PumpSwap", "params": pumpswap_params},
        recent_blockhash,
        gas_fee_strategy,
    )
    .set_slippage_basis_points(500)
    .set_account_policy(AccountPolicy.AUTO)
)
buy_params = simple_buy_params_to_trade_buy_params(simple)
    create_mint_ata=True,
    durable_nonce=None,
    fixed_output_token_amount=None,
    gas_fee_strategy=gas_fee_strategy,
    simulate=False,
)

result = await client.buy(buy_params)
print(f"Transaction signature: {result.signature}")

For comprehensive information about all trading parameters including TradeBuyParams and TradeSellParams, see the Trading Parameters documentation.

When using shred to subscribe to events, due to the nature of shreds, you cannot get complete information about transaction events. Please ensure that the parameters your trading logic depends on are available in shreds when using them.

When configuring SWQoS services, note the different parameter requirements for each service:

• Jito: The first parameter is UUID (if no UUID, pass an empty string "")
• Other MEV services: The first parameter is the API Token

Each SWQoS service supports an optional custom URL parameter:

# Using custom URL
jito_config = SwqosConfig(
    type="Jito",
    uuid="your_uuid",
    region=SwqosRegion.FRANKFURT,
    custom_url="https://custom-jito-endpoint.com"
)

# Using default regional endpoint
bloxroute_config = SwqosConfig(
    type="Bloxroute",
    api_token="your_api_token",
    region=SwqosRegion.NEW_YORK
)

URL Priority Logic:

• If a custom URL is provided, it will be used instead of the regional endpoint
• If no custom URL is provided, the system will use the default endpoint for the specified region
• This allows for maximum flexibility while maintaining backward compatibility

When using multiple MEV services, you need to use Durable Nonce. You need to use the fetch_nonce_info function to get the latest nonce value, and use it as the durable_nonce when trading.

The SDK provides a powerful middleware system that allows you to modify, add, or remove instructions before transaction execution. Middleware executes in the order they are added:

from sol_trade_sdk import MiddlewareManager

manager = MiddlewareManager() \
    .add_middleware(FirstMiddleware()) \
    .add_middleware(SecondMiddleware()) \
    .add_middleware(ThirdMiddleware())

Address Lookup Tables (ALT) allow you to optimize transaction size and reduce fees by storing frequently used addresses in a compact table format.

from sol_trade_sdk import fetch_address_lookup_table_account, AddressLookupTableCache

# Fetch ALT from chain
alt = await fetch_address_lookup_table_account(rpc, alt_address)
print(f"ALT contains {len(alt.addresses)} addresses")

# Use cache for performance
cache = AddressLookupTableCache(rpc)
await cache.prefetch([alt_address1, alt_address2, alt_address3])
cached = cache.get(alt_address1)

Use Durable Nonce to implement transaction replay protection and optimize transaction processing.

from sol_trade_sdk import fetch_nonce_info, NonceCache

# Fetch nonce info
nonce_info = await fetch_nonce_info(rpc, nonce_account)

PumpFun and PumpSwap support cashback for eligible tokens: part of the trading fee can be returned to the user. The SDK must know whether the token has cashback enabled so that buy/sell instructions include the correct accounts.

• When params come from RPC: If you use PumpFunParams.from_mint_by_rpc or PumpSwapParams.from_pool_address_by_rpc, the SDK reads is_cashback_coin from chain—no extra step.
• When params come from decoded events: If you build params from already-decoded trade events (for example from a parser service), you must pass the cashback flag into the SDK:
  • PumpFun: Set is_cashback_coin when building params from decoded events.
  • PumpSwap: Set is_cashback_coin field when constructing params manually.

You can apply for a key through the official website: Community Website

• Jito: High-performance block space
• ZeroSlot: Zero-latency transactions
• Temporal: Time-sensitive transactions
• Bloxroute: Blockchain network acceleration
• FlashBlock: High-speed transaction execution with API key authentication
• BlockRazor: High-speed transaction execution with API key authentication
• Node1: High-speed transaction execution with API key authentication
• Astralane: Blockchain network acceleration

src/
├── common/           # Common functionality and tools
├── constants/        # Constant definitions
├── instruction/      # Instruction building
│   └── utils/        # Instruction utilities
├── swqos/            # MEV service clients
├── trading/          # Unified trading engine
│   ├── common/       # Common trading tools
│   ├── core/         # Core trading engine
│   ├── middleware/   # Middleware system
│   └── factory.py    # Trading factory
├── utils/            # Utility functions
│   ├── calc/         # Amount calculation utilities
│   └── price/        # Price calculation utilities
└── __init__.py       # Main library file

MIT License

• Official Website: https://fnzero.dev/
• Project Repository: https://github.com/0xfnzero/sol-trade-sdk-python
• Telegram Group: https://t.me/fnzero_group
• Discord: https://discord.gg/vuazbGkqQE

1. Test thoroughly before using on mainnet
2. Properly configure private keys and API tokens
3. Pay attention to slippage settings to avoid transaction failures
4. Monitor balances and transaction fees
5. Comply with relevant laws and regulations