# Quick Start

{% hint style="info" %}
This page gives a brief introduction to the library. It assumes you have the library installed, if you don’t check the [Installing](https://momojs.rewriteapi.cm/introduction) portion.
{% endhint %}

## Get your API keys, Credential

For sandbox environement you just need to [Signup](https://momodeveloper.mtn.com/signup) if it's your first time to use MTN MOMO API or [Signin](https://momodeveloper.mtn.com/signin), then subscribe for a production to get your Credential

For production environement, API USER & API KEY & CREDENTIAL are provided by MTN. you need to [GO LIVE](https://momodeveloper.mtn.com/go-live), submit your document to get all live credential

## Quick Example

```javascript
const { Client } = require('mobilemoney.js');

(async()=>{
    let user = new Client();
    user.isSandbox();
    let subscriptionKey = "COLLECTION_OR_DISBURSEMENT_CREDENTIAL_MAKE_SURE_TO_REPLACE_IT_CORRECTLY";
    // creating uuid version 4 from the library
    let uuid = user.getReferenceId();
    console.log(`UUID : ${uuid}`)

    // Creating user in sandbox env
    let [done, ] = await user.createApiUser(uuid, subscriptionKey);
    if (done){
        console.log('Create successfully');
        console.log(done);   
    }

    let [, apiUser] = await user.getApiUser(uuid, subscriptionKey)
    console.log(`apiUser : `)
    console.log(apiUser)

    let [, data] = await user.createApiKey(uuid, subscriptionKey)

    // Convert to basic token from apiuser & apikey, Library do it for you
    let basicToken = user.basicToken(uuid, data.apiKey)
    console.log(`Basic Token : ${basicToken}`)
    // Getting collection product with credential
    let collection = user.collection(subscriptionKey)
    // Creating access token for collection product
    let [,accessToken] = await collection.createAccessToken(basicToken)
    accessToken = accessToken.access_token
    console.log(`AccessToken : ${accessToken}`)
    // Convert to bearer token from access token
    let bearerToken = user.bearerToken(accessToken)
    console.log(`Bearer Token : ${bearerToken}`)

    //request to pay
    let body = {
        "amount": "5",
        "currency": "EUR",
        "externalId": "45464546454",
        "payer": {
            "partyIdType": "MSISDN",
            "partyId": "87937389"
        },
        "payerMessage": "BUY THING",
        "payeeNote": "THANKS"
    }

    let [reqToPay,] = await collection.requestToPay(bearerToken, 
        user.getReferenceId(), 
        apiUser.targetEnvironment,
        body)

    console.log(`Request to Pay : ${reqToPay}`)

   
})()
```

### Run the code

Save the file with a name like `momo_example.js` to avoid conflict with the Library, don't save it with `mobilemoney.js`

```
node momo_example.js
```