> For the complete documentation index, see [llms.txt](https://edseries-plugins.gitbook.io/p/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://edseries-plugins.gitbook.io/p/pinnaprison/tools-and-items/backpacks.md).

# Backpacks

A backpack automatically collects every block a player mines, holds it up to a capacity, and can be sold (manually or via [autosell](/p/pinnaprison/tools-and-items/autosell.md)). Backpacks have upgradeable **tiers** that increase storage and add a block-gain **multiplier**. Configured in `backpacks.yml`.

```yaml
config:
  gui: 'backpack'              # the backpack GUI (guis/backpack.yml)
  item:
    enabled: true
    hotbar-slot: 8
    update-interval: 5         # seconds between hotbar item refreshes
    item:
      material: 'texture-eyJ0…'  # a custom head
      name: '&d&lYour Backpack'
      lore:
        - ' &a* &bStorage: &a{weight} &8/ &c{size}'
        - '&d[ᴄʟɪᴄᴋ ᴛᴏ ᴏᴘᴇɴ ʏᴏᴜʀ ʙᴀᴄᴋᴘᴀᴄᴋ]'
  contents-format: ' &7- &f{name}&7: &e{amount}'
  contents-empty: ' &7- &fEmpty'

backpacks:
  '1':
    size: 10000
  '2':
    size: 50000
    multiplier: 0.2
    cost: { currency: 'money', amount: 1000000 }
```

## `config`

| Key                    | Description                                                                                                      |
| ---------------------- | ---------------------------------------------------------------------------------------------------------------- |
| `gui`                  | The menu opened when clicking the backpack item (`guis/backpack.yml`; contents in `guis/backpack-contents.yml`). |
| `item.enabled`         | Whether the backpack hotbar item is given.                                                                       |
| `item.hotbar-slot`     | The hotbar slot it's locked to.                                                                                  |
| `item.update-interval` | How often (seconds) the item refreshes while mining.                                                             |
| `item.item`            | The item itself. Lore placeholders: `{weight}` (used storage), `{size}` (capacity).                              |
| `contents-format`      | How each stored item renders in the contents menu (`{name}`, `{amount}`).                                        |
| `contents-empty`       | Shown when the backpack is empty.                                                                                |

## Tiers (`backpacks`)

A numbered map of tiers. Tier `'1'` is the default (no cost); higher tiers are bought in order.

| Key                             | Description                                        |
| ------------------------------- | -------------------------------------------------- |
| `size`                          | Storage capacity (max weight) at this tier.        |
| `multiplier`                    | Extra blocks stored per mined block. `0.2` = +20%. |
| `cost.currency` / `cost.amount` | Price to upgrade **into** this tier.               |

## Usage

* **Right-click** the backpack item → open the backpack menu.
* **`/sellall`** (alias `/sellbackpack`) → sell the whole backpack at the [autosell](/p/pinnaprison/tools-and-items/autosell.md) prices.
* Admins: **`/pinna givebackpack <player>`** to (re)give the backpack item.

## Placeholders

```
%pinnaprison_backpack_size%           -> used weight
%pinnaprison_backpack_maxsize%        -> capacity
%pinnaprison_backpack_nextsize%       -> next tier capacity
%pinnaprison_backpack_multiplier%     -> current multiplier
%pinnaprison_backpack_nextmultiplier% -> next tier multiplier
%pinnaprison_backpack_cost%           -> next tier cost
%pinnaprison_backpack_maxed%          -> true/false
%pinnaprison_backpack_currencyname%   -> next tier cost currency
%pinnaprison_backpack_autosell%       -> autosell on/off
```


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