Export a Google Sheets Worksheet Data into a Constant Contact List

I want to create a Google Sheets App Script that has a trigger to once a month export/upload data (First Name, Last Name, Email Address and a Date) from a Google worksheet directly into Constant Contact and upload a specific list. And I did a Google search, and Google "AI Overview" generated the code below, but I'm have trouble finding the "Constant Contact API credentials". So I was wondering if there is already a Google Sheets App Script developed that I could use (and just replace the parameters) that uploads a Google Worksheet's data directly to a Constant Contact List?

Here's the Google Sheets App Script code generated by the Google AI Overview:

function exportToConstantContact() {

const ss = SpreadsheetApp.getActiveSpreadsheet();

const sheet = ss.getSheetByName("Contacts"); // Replace with your sheet name

const data = sheet.getDataRange().getValues();

// Constant Contact API credentials

const apiKey = "YOUR_CONSTANT_CONTACT_API_KEY";

const accessToken = "YOUR_CONSTANT_CONTACT_ACCESS_TOKEN";

const listId = "YOUR_CONSTANT_CONTACT_LIST_ID"; // Target list ID

// Skip header row if present

for (let i = 1; i < data.length; i++) {

const row = data[i];

const email = row[0]; // Assuming email is in the first column

const firstName = row[1]; // Assuming first name is in the second column

const lastName = row[2]; // Assuming last name is in the third column

const payload = {

email_addresses: [{ email_address: email }],

first_name: firstName,

last_name: lastName,

list_memberships: [{ list_id: listId }]

};

const options = {

method: "post",

contentType: "application/json",

headers: {

"Authorization": "Bearer " + accessToken

},

payload: JSON.stringify(payload)

};

try {

const response = UrlFetchApp.fetch("https://api.cc.email/v3/contacts", options);

Logger.log("Response: " + response.getContentText());

} catch (e) {

Logger.log("Error exporting contact: " + e.message);

}

}

}