> For the complete documentation index, see [llms.txt](https://docs.fringe.fi/v2-smart-contract-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fringe.fi/v2-smart-contract-documentation/priceoracle/priceproviders/uniswapv3/v3-core/interfaces/ierc20minimal.md).

# IERC20Minimal

## Overview

#### License: GPL-2.0-or-later

```solidity
interface IERC20Minimal
```

Contains a subset of the full ERC20 interface that is used in Uniswap V3

## Events info

### Transfer

```solidity
event Transfer(address indexed from, address indexed to, uint256 value)
```

Event emitted when tokens are transferred from one address to another, either via `#transfer` or `#transferFrom`.

Parameters:

| Name  | Type    | Description                                                             |
| ----- | ------- | ----------------------------------------------------------------------- |
| from  | address | The account from which the tokens were sent, i.e. the balance decreased |
| to    | address | The account to which the tokens were sent, i.e. the balance increased   |
| value | uint256 | The amount of tokens that were transferred                              |

### Approval

```solidity
event Approval(address indexed owner, address indexed spender, uint256 value)
```

Event emitted when the approval amount for the spender of a given owner's tokens changes.

Parameters:

| Name    | Type    | Description                                               |
| ------- | ------- | --------------------------------------------------------- |
| owner   | address | The account that approved spending of its tokens          |
| spender | address | The account for which the spending allowance was modified |
| value   | uint256 | The new allowance from the owner to the spender           |

## Functions info

### balanceOf (0x70a08231)

```solidity
function balanceOf(address account) external view returns (uint256)
```

Returns the balance of a token

Parameters:

| Name    | Type    | Description                                                                    |
| ------- | ------- | ------------------------------------------------------------------------------ |
| account | address | The account for which to look up the number of tokens it has, i.e. its balance |

Return values:

| Name | Type    | Description                              |
| ---- | ------- | ---------------------------------------- |
| \[0] | uint256 | The number of tokens held by the account |

### transfer (0xa9059cbb)

```solidity
function transfer(address recipient, uint256 amount) external returns (bool)
```

Transfers the amount of token from the `msg.sender` to the recipient

Parameters:

| Name      | Type    | Description                                                   |
| --------- | ------- | ------------------------------------------------------------- |
| recipient | address | The account that will receive the amount transferred          |
| amount    | uint256 | The number of tokens to send from the sender to the recipient |

Return values:

| Name | Type | Description                                                                |
| ---- | ---- | -------------------------------------------------------------------------- |
| \[0] | bool | Returns true for a successful transfer, false for an unsuccessful transfer |

### allowance (0xdd62ed3e)

```solidity
function allowance(
    address owner,
    address spender
) external view returns (uint256)
```

Returns the current allowance given to a spender by an owner

Parameters:

| Name    | Type    | Description                      |
| ------- | ------- | -------------------------------- |
| owner   | address | The account of the token owner   |
| spender | address | The account of the token spender |

Return values:

| Name | Type    | Description                                           |
| ---- | ------- | ----------------------------------------------------- |
| \[0] | uint256 | The current allowance granted by `owner` to `spender` |

### approve (0x095ea7b3)

```solidity
function approve(address spender, uint256 amount) external returns (bool)
```

Sets the allowance of a spender from the `msg.sender` to the value `amount`

Parameters:

| Name    | Type    | Description                                                                    |
| ------- | ------- | ------------------------------------------------------------------------------ |
| spender | address | The account which will be allowed to spend a given amount of the owners tokens |
| amount  | uint256 | The amount of tokens allowed to be used by `spender`                           |

Return values:

| Name | Type | Description                                                    |
| ---- | ---- | -------------------------------------------------------------- |
| \[0] | bool | Returns true for a successful approval, false for unsuccessful |

### transferFrom (0x23b872dd)

```solidity
function transferFrom(
    address sender,
    address recipient,
    uint256 amount
) external returns (bool)
```

Transfers `amount` tokens from `sender` to `recipient` up to the allowance given to the `msg.sender`

Parameters:

| Name      | Type    | Description                                           |
| --------- | ------- | ----------------------------------------------------- |
| sender    | address | The account from which the transfer will be initiated |
| recipient | address | The recipient of the transfer                         |
| amount    | uint256 | The amount of the transfer                            |

Return values:

| Name | Type | Description                                                    |
| ---- | ---- | -------------------------------------------------------------- |
| \[0] | bool | Returns true for a successful transfer, false for unsuccessful |