# Uniswap V3

> On-chain contract: Uniswap V3. 17 functions, 0 events.

MCP endpoint: https://uniswap.mcp.junct.dev/mcp
Domain: dex
Auth: none

## Tools

### WETH9
Calls WETH9(). Read-only — does not modify contract state. Unrestricted — any address can call this read function. Returns address.

_No parameters required._

### exactInput
Calls exactInput(params: { path: string, recipient: string, deadline: string, amountIn: string, amountOutMinimum: string }). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. Returns amountOut (uint256).

**Parameters:**
- `params` (object, required): tuple. Fields: path, recipient, deadline, amountIn, amountOutMinimum.

### exactInputSingle
Calls exactInputSingle(params: { tokenIn: string, tokenOut: string, fee: string, recipient: string, deadline: string, amountIn: string, amountOutMinimum: string, sqrtPriceLimitX96: string }). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. Returns amountOut (uint256).

**Parameters:**
- `params` (object, required): tuple. Fields: tokenIn, tokenOut, fee, recipient, deadline, amountIn, amountOutMinimum, sqrtPriceLimitX96.

### exactOutput
Calls exactOutput(params: { path: string, recipient: string, deadline: string, amountOut: string, amountInMaximum: string }). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. Returns amountIn (uint256).

**Parameters:**
- `params` (object, required): tuple. Fields: path, recipient, deadline, amountOut, amountInMaximum.

### exactOutputSingle
Calls exactOutputSingle(params: { tokenIn: string, tokenOut: string, fee: string, recipient: string, deadline: string, amountOut: string, amountInMaximum: string, sqrtPriceLimitX96: string }). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. Returns amountIn (uint256).

**Parameters:**
- `params` (object, required): tuple. Fields: tokenIn, tokenOut, fee, recipient, deadline, amountOut, amountInMaximum, sqrtPriceLimitX96.

### factory
Calls factory(). Read-only — does not modify contract state. Unrestricted — any address can call this read function. Returns address.

_No parameters required._

### multicall
Calls multicall(data: string[]). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. Returns results (bytes[]).

**Parameters:**
- `data` (array, required): bytes[] (hex-encoded bytes, 0x-prefixed).

### refundETH
Calls refundETH(). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

_No parameters required._

### selfPermit
Calls selfPermit(token: string, value: string, deadline: string, v: string, r: string, s: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `token` (string, required): address (Ethereum address, 0x-prefixed).
- `value` (string, required): uint256 (uint256, pass as decimal string).
- `deadline` (string, required): uint256 (uint256, pass as decimal string).
- `v` (string, required): uint8 (uint8, pass as decimal string).
- `r` (string, required): bytes32 (32-byte hex string, 0x-prefixed).
- `s` (string, required): bytes32 (32-byte hex string, 0x-prefixed).

### selfPermitAllowed
Calls selfPermitAllowed(token: string, nonce: string, expiry: string, v: string, r: string, s: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `token` (string, required): address (Ethereum address, 0x-prefixed).
- `nonce` (string, required): uint256 (uint256, pass as decimal string).
- `expiry` (string, required): uint256 (uint256, pass as decimal string).
- `v` (string, required): uint8 (uint8, pass as decimal string).
- `r` (string, required): bytes32 (32-byte hex string, 0x-prefixed).
- `s` (string, required): bytes32 (32-byte hex string, 0x-prefixed).

### selfPermitAllowedIfNecessary
Calls selfPermitAllowedIfNecessary(token: string, nonce: string, expiry: string, v: string, r: string, s: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `token` (string, required): address (Ethereum address, 0x-prefixed).
- `nonce` (string, required): uint256 (uint256, pass as decimal string).
- `expiry` (string, required): uint256 (uint256, pass as decimal string).
- `v` (string, required): uint8 (uint8, pass as decimal string).
- `r` (string, required): bytes32 (32-byte hex string, 0x-prefixed).
- `s` (string, required): bytes32 (32-byte hex string, 0x-prefixed).

### selfPermitIfNecessary
Calls selfPermitIfNecessary(token: string, value: string, deadline: string, v: string, r: string, s: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `token` (string, required): address (Ethereum address, 0x-prefixed).
- `value` (string, required): uint256 (uint256, pass as decimal string).
- `deadline` (string, required): uint256 (uint256, pass as decimal string).
- `v` (string, required): uint8 (uint8, pass as decimal string).
- `r` (string, required): bytes32 (32-byte hex string, 0x-prefixed).
- `s` (string, required): bytes32 (32-byte hex string, 0x-prefixed).

### sweepToken
Calls sweepToken(token: string, amountMinimum: string, recipient: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `token` (string, required): address (Ethereum address, 0x-prefixed).
- `amountMinimum` (string, required): uint256 (uint256, pass as decimal string).
- `recipient` (string, required): address (Ethereum address, 0x-prefixed).

### sweepTokenWithFee
Calls sweepTokenWithFee(token: string, amountMinimum: string, recipient: string, feeBips: string, feeRecipient: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `token` (string, required): address (Ethereum address, 0x-prefixed).
- `amountMinimum` (string, required): uint256 (uint256, pass as decimal string).
- `recipient` (string, required): address (Ethereum address, 0x-prefixed).
- `feeBips` (string, required): uint256 (uint256, pass as decimal string).
- `feeRecipient` (string, required): address (Ethereum address, 0x-prefixed).

### uniswapV3SwapCallback
Calls uniswapV3SwapCallback(amount0Delta: string, amount1Delta: string, _data: string). Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `amount0Delta` (string, required): int256 (int256, pass as decimal string).
- `amount1Delta` (string, required): int256 (int256, pass as decimal string).
- `_data` (string, required): bytes (hex-encoded bytes, 0x-prefixed).

### unwrapWETH9
Calls unwrapWETH9(amountMinimum: string, recipient: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `amountMinimum` (string, required): uint256 (uint256, pass as decimal string).
- `recipient` (string, required): address (Ethereum address, 0x-prefixed).

### unwrapWETH9WithFee
Calls unwrapWETH9WithFee(amountMinimum: string, recipient: string, feeBips: string, feeRecipient: string). Requires ETH value to be sent with the transaction. Write function — may have access control restrictions (e.g. onlyOwner). Check contract source for modifier requirements before calling. No return value.

**Parameters:**
- `amountMinimum` (string, required): uint256 (uint256, pass as decimal string).
- `recipient` (string, required): address (Ethereum address, 0x-prefixed).
- `feeBips` (string, required): uint256 (uint256, pass as decimal string).
- `feeRecipient` (string, required): address (Ethereum address, 0x-prefixed).

## Usage

Connect to this MCP server at `https://uniswap.mcp.junct.dev/mcp`. All tools are callable via the MCP protocol.
Call `WETH9` first to query current state before any write operations.
Write operations like `exactInput` return data or calldata for agent use.