TypeScript/Python SDK for integrating CoW Protocol (Coincidence of Wants) surplus-based fee routing.
Product 3 of the defi-router store. Part of the CryptoForge DeFi toolkit.
Price: $9.99 | License: MIT | TypeScript: ^5.5 | Python: ^3.10
CoW Protocol (formerly Gnosis Protocol v2) is a trading protocol that finds the best prices for users by batching orders and executing them through a competitive solver auction — instead of routing directly through on-chain AMMs.
┌────────────────────────────────────────────────────────────────────┐
│ CoW Protocol Flow │
│ │
│ 1. User signs EIP-712 order 2. Order enters batch auction │
│ (off-chain, gasless) (every ~30 seconds) │
│ │
│ ┌─────────┐ sign ┌──────────────┐ batch ┌────────────────┐ │
│ │ User │ ──────→ │ Orderbook │ ───────→ │ Solver Auction │ │
│ │ (SDK) │ │ (api.cow.fi)│ │ (competitive) │ │
│ └─────────┘ └──────────────┘ └───────┬────────┘ │
│ │ │
│ 3. Solvers find optimal 4. Settlement on-chain│ │
│ execution paths via GPv2Settlement │ │
│ ▼ │
│ ┌─────────────────┐ ┌─────────────────────────────────┐ │
│ │ Coincidence of │ ◄──────│ GPv2Settlement Contract │ │
│ │ Wants (CoW) │ │ - Batch settlement │ │
│ │ = P2P matching │ │ - Surplus to users │ │
│ │ = Zero slippage │ │ - MEV protection │ │
│ └─────────────────┘ └─────────────────────────────────┘ │
└────────────────────────────────────────────────────────────────────┘| Feature | Traditional AMM | CoW Protocol |
|---|---|---|
| MEV Protection | None (sandwichable) | Batch auction prevents MEV |
| Price | Pool price + slippage | Solver competition finds best price |
| Surplus | Captured by MEV bots | Returned to users |
| Gas | User pays per swap | Solver pays, amortized over batch |
| P2P Matching | Not possible | Coincidence of Wants matching |
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