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**Curve StableSwap Parser** (`curve.go`): - TokenExchange event parsing (address,int128,uint256,int128,uint256) - TokenExchangeUnderlying event support for wrapped tokens - Coin index (int128) to token address mapping - Handles 2-coin and multi-coin pools - Typical use: USDC/USDT, DAI/USDC stablecoin swaps - Low slippage due to amplification coefficient (A parameter) - Fee: typically 0.04% (4 basis points) **Key Features:** - Buyer address extraction from indexed topics - Coin ID to token mapping via pool cache - Both directions: token0→token1 and token1→token0 - Buyer is both sender and recipient (Curve pattern) - Support for 6-decimal stablecoins (USDC, USDT) **Testing** (`curve_test.go`): - TokenExchange and TokenExchangeUnderlying signature validation - Swap direction tests (USDC→USDT, USDT→USDC) - Multi-event receipts with mixed protocols - Decimal scaling validation (6 decimals → 18 decimals) - Pool not found error handling **Type System Fix:** - Exported ScaleToDecimals() function in pkg/types/pool.go - Updated all callers to use exported function - Fixed test function name (TestScaleToDecimals) - Consistent across all parsers (V2, V3, Curve) **Use Cases:** 1. Stablecoin arbitrage (Curve vs Uniswap pricing) 2. Low-slippage large swaps (Curve specialization) 3. Multi-coin pool support (3pool, 4pool) 4. Underlying vs wrapped token detection **Task:** P2-018 (Curve StableSwap parser) **Coverage:** 100% (enforced in CI/CD) **Protocol:** Curve StableSwap on Arbitrum 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>