Multi-DEX Best Price Router Overlay

WHAT IT DOES

Multi-DEX Best Price Router Overlay is your ultimate price comparison tool for decentralized exchanges. It automatically detects the token pair and trade amount from any DEX swap page, then queries multiple DEX aggregators and individual DEX APIs in real-time to fetch quotes across major DEXs including Uniswap, SushiSwap, Curve, Balancer, 1inch, CowSwap, and PancakeSwap. The tool compares prices, slippage estimates, and gas costs across all sources, displaying a side-by-side comparison with clear recommendations. It calculates the net price after gas costs and identifies the optimal route for your trade. With one click, you can execute your swap on the best price DEX with automatic routing and fee optimization.

WHERE IT RUNS

This script runs on all major DEX interfaces, including Uniswap (app.uniswap.org), SushiSwap (app.sushi.com), Curve (curve.fi), Balancer (balancer.fi), 1inch (1inch.io), 0x Protocol (0x.org), CowSwap (cow.fi), and PancakeSwap (app.pancakeswap.finance). It works on swap pages and trading interfaces where users exchange tokens. The tool automatically detects the DEX interface and adapts its quote fetching to the specific page.

HOW TO USE

Install the script through the BotGentz userscript manager. Navigate to any supported DEX swap page. Click "Connect Wallet" to link your EVM wallet extension. The panel will automatically detect the token pair and amount from the page. Click "Fetch Quotes" to query all configured DEXs for real-time prices. The panel displays a side-by-side comparison showing each DEX's price, net price after gas, and highlights the recommended route with savings percentage. Use "Execute on Recommended" to execute your swap on the optimal DEX, or manually select any DEX from the list. Auto-execute can be enabled to automatically route trades when savings exceed a configurable threshold.

MULTI-ROUTE PRICE AGGREGATION ENGINE WITH GAS OPTIMIZATION

Unlike single-DEX calculators that only show one price, this tool implements a multi-route price aggregation engine that simultaneously fetches quotes from multiple DEX sources. The engine uses parallel asynchronous API calls to minimize latency, with fallback handling for rate-limited or unavailable endpoints. Each quote includes base price, slippage estimation, fee structure, and gas cost projection. The tool then applies a gas optimization layer that calculates the net effective price after gas costs, using actual gas price from the connected wallet. This identifies the true best price—not just the lowest raw price, but the lowest total cost after accounting for transaction fees. The engine supports configurable DEX preferences, allowing users to focus on specific protocols while still comparing across all available sources.

THE PANEL

The floating panel is fully draggable and snap-to-edge enabled. You can collapse it to a compact bubble when not in use, resize it to your preferred dimensions, and it remembers its position across page loads using persistent storage. Press Escape to quickly dismiss the panel. The panel automatically updates with fresh gas data every 30 seconds and refreshes quotes on demand, ensuring you always have current pricing information.

PLEASE NOTE

This script requires the free BotGentz extension to be installed in your browser—it does not run as a standalone extension. You also need a real EVM wallet extension already installed and configured. The tool works with major DEXs but may not detect all DEX interfaces correctly. Price accuracy depends on API availability and network conditions—some DEXs may have rate limiting that affects quote retrieval. Gas costs for routing may offset savings on cheaper prices. No user data is collected, stored, or transmitted—all wallet interactions stay local in your browser. The tool provides price comparison and execution assistance but cannot guarantee execution at the quoted price due to slippage and market movement.