UniswapSharp 1.0.0

UniswapSharp

A C#/.NET port of the official Uniswap SDK monorepo — the Uniswap/sdks TypeScript packages. Model currencies, tokens, pools, positions, routes and trades; run the tick / sqrt-price / swap / liquidity math; build calldata for the V3/V4 periphery and the Universal Router; and hash/sign Permit2 and UniswapX orders — all with exact BigInteger / BigRational arithmetic (no floating point in protocol math).

Namespaces and file names deliberately mirror the upstream TypeScript so the two read side by side, and behaviour is verified to the digit against the upstream .test.ts vectors.

Status: the full monorepo surface is ported and green — 1,694 xUnit tests, 0 failing, on Linux / Windows / macOS. See docs/PORTING.md for the file-by-file mapping, methodology, and every intentional divergence.

Packages

Everything ships in the single UniswapSharp NuGet package, organised into namespaces that mirror the upstream packages:

Install

dotnet add package UniswapSharp

Targets .NET 10 (net10.0). Depends on Nethereum (ABI/keccak/CREATE2/EIP-712) and ExtendedNumerics.BigRational for exact rational arithmetic.

Quickstart

using System.Numerics;
using UniswapSharp.Core.Entities;
using UniswapSharp.V3.Entities;
using UniswapSharp.V3.Utils;
using static UniswapSharp.V3.Constants;

// 1. Define tokens (Ethereum mainnet)
var usdc = new Token(1, "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", 6, "USDC", "USD Coin");
var weth = new Token(1, "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", 18, "WETH", "Wrapped Ether");

// 2. Deterministic V3 pool address — no RPC required
string poolAddress = Pool.GetAddress(usdc, weth, FeeAmount.MEDIUM);
Console.WriteLine($"USDC/WETH 0.3% pool: {poolAddress}");

// 3. Construct a pool at a chosen price: 1000 WETH / 2,000,000 USDC reserves (~2000 USDC per WETH)
var sqrtPriceX96 = EncodeSqrtRatioX96.Encode(BigInteger.Parse("1000000000000000000000"), BigInteger.Parse("2000000000000"));
int tick = TickMath.GetTickAtSqrtRatio(sqrtPriceX96);
var pool = new Pool(usdc, weth, FeeAmount.MEDIUM, sqrtPriceX96, BigInteger.Zero, tick);

// 4. Read a price with the desired significant digits
Console.WriteLine($"1 WETH = {pool.PriceOf(weth).ToSignificant(6)} USDC");

Output:

USDC/WETH 0.3% pool: 0x8ad599c3A0ff1De082011EFDDc58f1908eb6e6D8
1 WETH = 2000 USDC

Swap quoting, position math, and calldata builders across all the namespaces above work the same way. The test suite under test/UniswapSharp.Testing/ mirrors the source tree and doubles as an end-to-end example library — e.g. V3/SwapRouterTests, V4/, Router/, UniversalRouter/, UniswapX/, and Permit2/ show calldata and signing round-trips against the upstream vectors.

Building & testing

dotnet build -c Release
dotnet test  -c Release

The projects target net10.0 and require the .NET 10 SDK.

How it maps to upstream

Each UniswapSharp.* namespace corresponds one-to-one with an upstream package (see the table above). The complete file-by-file mapping, the test-first porting methodology, and every intentional divergence (e.g. injectable RPC/DNS where upstream uses live network I/O) are documented in docs/PORTING.md.

Contributing

See CONTRIBUTING.md. We work test-first, match upstream to the digit, and land everything through PRs. Please also read the Code of Conduct and Security Policy.

License & attribution

MIT — see LICENSE. UniswapSharp is a derivative work of the MIT-licensed Uniswap/sdks (© Uniswap Labs) and is not affiliated with Uniswap Labs. This software is provided as is; verify calldata and amounts independently before broadcasting on-chain transactions.