# DEX Aggregator Integration Plan

## Overview

This document outlines the implementation plan for integrating with DEX aggregators in the MEV bot. DEX aggregators source liquidity from multiple exchanges to provide better prices and lower slippage.

## Major DEX Aggregators

### 1inch
- Contract: `0x1111111254fb6c44bAC0beD2854e76F90643097d` (mainnet)
- Features: Multi-chain support, gas estimation, complex routing

### ParaSwap
- Contract: `0xDEF171Fe48CF0115B1d80b88dc8eAB59176FEe57`
- Features: Open-source API, multiple DEX support, price optimization

### Matcha (0x)
- Contract: Various proxy contracts
- Features: Multi-DEX integration, API support, MEV protection

### OpenOcean
- Features: Cross-chain aggregation, gasless swaps
- Contract: Multiple chain-specific contracts

## Core Functions

### Swap Functions
- `swap` (executing trades)
- `unoswap` (1inch specific)
- `multiswap` (multi-hop routing)
- `buy` (for reverse trades)

### Quote Functions
- `getRate` (price estimation)
- `getAmountsOut` (with multi-DEX routing)
- `getSwapCalldata` (for simulation)

### Aggregation Functions
- Route optimization across multiple DEXs
- Gas cost comparison
- Price impact minimization

## Implementation Steps

1. Create Aggregator struct implementing the Exchange interface
2. Implement 1inch aggregation functionality
3. Add ParaSwap integration
4. Integrate Matcha/0x
5. Add OpenOcean support
6. Implement routing optimization algorithm
7. Create gas estimation functions
8. Add multi-chain support

## Pricing Mechanisms

### Multi-DEX Routing
- Compare prices across multiple exchanges
- Consider gas costs in profitability
- Account for slippage across different platforms
- Optimize route based on total cost (swap + gas)

### Aggregation-Specific Considerations
- Split trades across multiple DEXs to reduce slippage
- Consider front-running protection
- Account for different fee structures
- Evaluate MEV protection mechanisms

## Testing Plan

1. Unit tests for each aggregator integration
2. Price comparison accuracy testing
3. Route optimization verification
4. Gas estimation accuracy testing
5. Multi-hop trade execution testing
6. Edge case testing (large trades, multiple splits)
7. Cross-chain functionality testing
8. Performance comparison with direct DEX swaps

## Performance Considerations

- Optimize for lowest possible slippage
- Minimize gas costs across all operations
- Efficient routing algorithms
- Cache commonly used routes
- Batch operations where possible
- Consider transaction complexity limits

## Security Considerations

- Validate aggregator contract addresses
- Implement proper slippage protection
- Verify routing safety
- Consider MEV risks in aggregation
- Sanitize data from multiple DEX sources

## Integration with MEV Bot

- Compare aggregator routes with direct swaps
- Include gas costs in profitability calculations
- Monitor aggregator-specific MEV opportunities
- Track split trades as potential MEV targets
- Consider front-running protection for aggregated trades
- Optimize for different trade sizes and market conditions