Snipe_PumpFun

Algorihmic method to execute sniping, perfom buy and sell using Pump Portal 3rd Part API

Report: Utilizing the Pump Portal Local Trading API

1. Introduction The Pump Portal Local Trading API allows users to execute trades on the Solana blockchain with more control over the transaction process. This report outlines the proper usage of the API, code structure, design considerations, and error prevention strategies.

2. API Overview The local trading API involves a two-step process: a) Retrieving an unsigned transaction from Pump Portal b) Signing and sending the transaction to a Solana RPC endpoint

Endpoint: https://pumpportal.fun/api/trade-local Method: POST Key Parameters: publicKey, action, mint, amount, denominatedInSol, slippage, priorityFee, pool

3. Code Structure and Design

3.1 Configuration Management

• Use a TradeConfig dataclass to store configuration parameters
• Implement a read_config function to load configuration from a JSON file
• Consider using environment variables for sensitive data in production

@dataclass
class TradeConfig:
    api_key: str
    private_key: str
    public_key: str
    rpc_endpoint: str
    denominated_in_sol: bool
    slippage: int
    priority_fee: float
    pool: str

def read_config(config_file='config.json') -> TradeConfig:
    # Implementation

3.2 API Interaction

• Implement a get_unsigned_transaction function to interact with Pump Portal API
• Use the requests library for HTTP communications

def get_unsigned_transaction(config: TradeConfig, action: str, mint: str, amount: str) -> bytes:
    # Implementation

3.3 Transaction Signing and Sending

• Use the solders library for Solana transaction handling
• Implement a sign_and_send_transaction function

def sign_and_send_transaction(unsigned_tx: bytes, config: TradeConfig) -> str:
    # Implementation

3.4 Trade Execution

• Create an execute_local_trade function to orchestrate the entire process
• Implement proper error handling and logging

def execute_local_trade(config: TradeConfig, action: str, mint: str, amount: str) -> str:
    # Implementation

3.5 User Interface

• Implement a main function for user interaction
• Use input validation to prevent common errors

def main():
    # Implementation

4. Error Prevention and Handling

4.1 Input Validation

• Validate user inputs before sending to the API
• Check for valid action types (buy/sell)
• Ensure amount is a valid number
• Verify mint address format

4.2 Network Error Handling

• Implement timeout for API requests
• Use try-except blocks to catch and handle network-related exceptions

4.3 Transaction Error Handling

• Parse and log detailed error messages from the Solana RPC response
• Provide clear feedback to the user about transaction failures

4.4 Balance Checks

• Implement a function to check token balance before selling
• Ensure sufficient SOL balance for transaction fees

5. Best Practices

5.1 Security

• Never hard-code sensitive information like private keys
• Use secure methods to store and access configuration data
• Implement proper access controls for the script

5.2 Logging

• Use Python's logging module for consistent log output
• Log all API interactions and their results
• Implement log rotation to manage log file sizes

5.3 Rate Limiting

• Implement rate limiting to avoid overwhelming the API
• Consider using a library like ratelimit for easy implementation

5.4 Error Retry Logic

• Implement exponential backoff for retrying failed network requests
• Set a maximum number of retry attempts

6. Example Usage

config = read_config()
action = "buy"
mint = "7jn4BdR7vmz6Lgece2vieHN6RAyz64P7WhZieQPzpump"
amount = "0.01"

try:
    tx_signature = execute_local_trade(config, action, mint, amount)
    print(f'Transaction: https://solscan.io/tx/{tx_signature}')
except ValueError as e:
    print(f"Trade execution failed: {e}")
except Exception as e:
    print(f"An unexpected error occurred: {e}")

7. Common Errors and Solutions

7.1 Insufficient Balance Error: "insufficient funds for transaction" Solution: Check token balance before selling and SOL balance for fees

7.2 Invalid Mint Address Error: "invalid mint address" Solution: Implement mint address validation before sending to API

7.3 Network Timeouts Error: "Connection timed out" Solution: Implement retry logic with exponential backoff

7.4 RPC Node Issues Error: "RPC node unavailable" Solution: Implement fallback RPC nodes in configuration

This comprehensive approach to using the API will help prevent common errors, enhance security, and provide a smooth trading experience for users.