> For the complete documentation index, see [llms.txt](https://docs.metalx.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.metalx.com/developers-dex/examples/installation-+-initialization.md).

# Installation + Initialization

**Install:**

{% tabs %}
{% tab title="JavaScript" %}

```
npm i @proton/js
npm i node-fetch@2
```

{% endtab %}

{% tab title="Python" %}
[pyeoskit](https://github.com/learnforpractice/pyeoskit) **is the library used for DEX.**

Below are the instructions to install it on different Operating Systems.

**MAC and Linux(ubuntu):**

```
python3 -m pip install -U pip
python3 -m pip install pyeoskit
```

\
**Windows:**

```
python -m pip install -U pip
python -m pip install pyeoskit
```

####

#### M1/M2 Mac:

```
brew install go cython
python3 -m pip install cmake

xcode-select --install
in case if you see the error message "xcode-select: error: command line tools are already installed, use "Software Update" to install updates" for above command, fix the with the following command
sudo rm -rf /Library/Developer/CommandLineTools
xcode-select --install

python3 -m pip install -U pip
python3 -m pip install pyeoskit
```

```
python3 -m pip install -U pip
python3 -m pip install pyeoskit
```

{% endtab %}
{% endtabs %}

**Initialize API:**

{% tabs %}
{% tab title="Javascript" %}

```javascript
const {JsonRpc, Api, JsSignatureProvider} = require('@proton/js')

// For testnet use https://rpc.api.testnet.metalx.com/
const ENDPOINTS = [
   'https://rpc.api.mainnet.metalx.com',
]

// To export private key from your wallet, follow:
// https://help.xprnetwork.org/hc/en-us/articles/4410313687703-How-do-I-backup-my-private-key-in-the-WebAuth-Wallet-
const PRIVATE_KEY = 'PVT_K1_2fdW4UGdbgG59mUaTiMXLy1rFv3afbmSWEZGWFz6zF8dR1VZPb'

// Authorization
const username = 'metaltest1'
const authorization = [{
    actor: 'pbonblockc',
    permission: 'active'
}]

// Initialize
const rpc = new JsonRpc(ENDPOINTS)

const api = new Api({
   rpc,
   signatureProvider: new JsSignatureProvider([PRIVATE_KEY])
})

const transact = (actions) => api.transact({actions}, {
    blocksBehind: 300,
    expireSeconds: 3000,
})
```

{% endtab %}

{% tab title="Python" %}

```python
import os
from pyeoskit import eosapi, wallet
#import your account private key here
wallet.import_key('mywallet', 'PVT_K1_2fdW4UGdbgG59mUaTiMXLy1rFv3afbmSWEZGWFz6zF8dR1VZPb')

username = "user1"
#For testnet use https://rpc.api.testnet.metalx.com
eosapi.set_node('https://rpc.api.mainnet.metalx.com')
info = eosapi.get_info()
print(info)
```

{% endtab %}
{% endtabs %}


---

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