# IDragonswapV2PoolImmutables

These parameters are fixed for a pool forever, i.e., the methods will always return the same values

### Functions[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#functions) <a href="#functions" id="functions"></a>

#### factory[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#factory) <a href="#factory" id="factory"></a>

```solidity
  function factory(
  ) external view returns (address)
```

The contract that deployed the pool, which must adhere to the IDragonswapV2Factory interface

**Return Values:**[**​**](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#return-values)

| Type    | Description      |
| ------- | ---------------- |
| address | contract address |

#### token0[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#token0) <a href="#token0" id="token0"></a>

```solidity
  function token0(
  ) external view returns (address)
```

The first of the two tokens of the pool, sorted by address

**Return Values:**[**​**](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#return-values-1)

| Type    | Description            |
| ------- | ---------------------- |
| address | token contract address |

#### token1[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#token1) <a href="#token1" id="token1"></a>

```solidity
  function token1(
  ) external view returns (address)
```

The second of the two tokens of the pool, sorted by address

**Return Values:**[**​**](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#return-values-2)

| Type    | Description            |
| ------- | ---------------------- |
| address | token contract address |

#### fee[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#fee) <a href="#fee" id="fee"></a>

```solidity
  function fee(
  ) external view returns (uint24)
```

The pool's fee in hundredths of a bip, i.e. 1e-6

**Return Values:**[**​**](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#return-values-3)

| Type   | Description |
| ------ | ----------- |
| uint24 | fee         |

#### tickSpacing[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#tickspacing) <a href="#tickspacing" id="tickspacing"></a>

```solidity
  function tickSpacing(
  ) external view returns (int24)
```

The pool tick spacing

Ticks can only be used at multiples of this value, minimum of 1 and always positive e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ... This value is an int24 to avoid casting even though it is always positive.

**Return Values:**[**​**](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#return-values-4)

| Type  | Description  |
| ----- | ------------ |
| int24 | tick spacing |

#### maxLiquidityPerTick[​](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#maxliquiditypertick) <a href="#maxliquiditypertick" id="maxliquiditypertick"></a>

```solidity
  function maxLiquidityPerTick(
  ) external view returns (uint128)
```

The maximum amount of position liquidity that can use any tick in the range

This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool

**Return Values:**[**​**](https://docs.uniswap.org/contracts/v3/reference/core/interfaces/pool/IUniswapV3PoolImmutables#return-values-5)

| Type    | Description                      |
| ------- | -------------------------------- |
| uint128 | max amount of liquidity per tick |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.dragonswap.app/dragonswap/resources/developer-resources/smart-contracts/dragonswapv2/core/interfaces/pool/idragonswapv2poolimmutables.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.