> For the complete documentation index, see [llms.txt](https://docs.algebra.finance/algebra-integral-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v2.0/v2.0-core/ialgebrapoolimmutables.md).

# IAlgebraPoolImmutables

Pool state that never changes

*Developer note: Credit to Uniswap Labs under GPL-2.0-or-later license: <https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces>*

## Functions

### dataStorageOperator

`function dataStorageOperator() external view returns (address)` view external

The contract that stores all the timepoints and can perform actions with them

**Returns:**

| Name | Type    | Description          |
| ---- | ------- | -------------------- |
| \[0] | address | The operator address |

### factory

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

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

**Returns:**

| Name | Type    | Description          |
| ---- | ------- | -------------------- |
| \[0] | address | The contract address |

### token0

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

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

**Returns:**

| Name | Type    | Description                |
| ---- | ------- | -------------------------- |
| \[0] | address | The token contract address |

### token1

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

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

**Returns:**

| Name | Type    | Description                |
| ---- | ------- | -------------------------- |
| \[0] | address | The token contract address |

### communityVault

`function communityVault() external view returns (address)` view external

The contract to which community fees are transferred

**Returns:**

| Name | Type    | Description                |
| ---- | ------- | -------------------------- |
| \[0] | address | The communityVault address |

### maxLiquidityPerTick

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

The maximum amount of position liquidity that can use any tick in the range *Developer note: 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*

**Returns:**

| Name | Type    | Description                          |
| ---- | ------- | ------------------------------------ |
| \[0] | uint128 | The max amount of liquidity per tick |