Event specification

This page lists the JSON payload of every event Eyk tracks, client-side and server-side, with the cookie and consent objects.

Page load

Eyk tracks this event automatically. You do not need to add it to the data layer. Type: client-side

{
    "event": "page_view_eyk",
    "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
    }
}

View item

Type: client-side

{
    "event": "view_item_eyk",
    "ecommerce": {
        "currency": "EUR",
        "value": "100",
        "items": [
            {
               "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
               "item_brand": "Hydrogen Vendor",
               "item_category": "Gifts",
               "item_id": "9143899914523",
               "item_name": "The Collection Snowboard: Hydrogen",
               "item_sku": "SKU-76543281",
               "item_variant": "485646409345615",
               "price": "100",
               "quantity": "1",
               "variant_name": "Default Title"
           }
        ]
    },
    "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
    }
}

View collection

Type: client-side

{
    "event": "view_collection_eyk",
    "ecommerce": {
        "collection_id": "12345678",
        "currency": "EUR",
        "item_list_name": "Products",
        "items": [
            {
                "image_url": "https://example-store.com/images/gift-card.png",
                "index": "1",
                "item_brand": "Snowboard Vendor",
                "item_category": "Gifts",
                "item_id": "8404872757547",
                "item_name": "Gift Card",
                "item_sku": "SKU-123478",
                "item_variant": "45556788429099",
                "price": "10.00",
                "variant_name": "$10"
            },
            {
                "image_url": "https://example-store.com/images/ski-wax.png",
                "index": "2",
                "item_brand": "GTM-test-store-10",
                "item_category": "Gifts",
                "item_id": "9143900537115",
                "item_name": "Selling Plans Ski Wax",
                "item_sku": "SKU-1237658",
                "item_variant": "48564641825051",
                "price": "24.95",
                "variant_name": "Selling Plans Ski Wax"
           }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
     }
}

Add to cart

Type: client-side

{
    "event": "add_to_cart_eyk",
    "ecommerce": {
        "currency": "EUR",
        "value": "600",
        "items": [
            {
               "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
               "item_brand": "Hydrogen Vendor",
               "item_category": "Gifts",
               "item_id": "9143899914523",
               "item_name": "The Collection Snowboard: Hydrogen",
               "item_sku": "SKU-76543281",
               "item_variant": "485646409345615",
               "price": "600",
               "quantity": "1",
               "variant_name": "Default Title"
            }
        ]
    },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
    }
}

View cart

Type: client-side

{
    "event": "view_cart_eyk",
    "ecommerce": {
         "value": "600",
         "currency": "EUR",
         "cart_quantity": "1",
         "items": [
             {
                "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
                "item_brand": "Hydrogen Vendor",
                "item_category": "Gifts",
                "item_id": "9143899914523",
                "item_name": "The Collection Snowboard: Hydrogen",
                "item_sku": "SKU-76543281",
                "item_variant": "485646409345615",
                "price": "600",
                "quantity": "1",
                "variant_name": "Default Title"
             }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
    }
}

Begin checkout

Type: client-side

{
    "event": "begin_checkout_eyk",
    "ecommerce": {
        "value": "600",
        "currency": "EUR",
        "cart_quantity": "1",
        "items": [
            {
              "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
              "item_brand": "Hydrogen Vendor",
              "item_category": "Gifts",
              "item_id": "9143899914523",
              "item_name": "The Collection Snowboard: Hydrogen",
              "item_sku": "SKU-76543281",
              "item_variant": "485646409345615",
              "price": "600",
              "quantity": "1",
              "variant_name": "Default Title"
            }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
     }
}

Add payment info

Type: client-side

{
    "event": "add_payment_info_eyk",
    "ecommerce": {
         "value": "600",
         "currency": "EUR",
         "cart_quantity": "1",
         "payment_type": "iDeal",
         "items": [
             {
               "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
               "item_brand": "Hydrogen Vendor",
               "item_category": "Gifts",
               "item_id": "9143899914523",
               "item_name": "The Collection Snowboard: Hydrogen",
               "item_sku": "SKU-76543281",
               "item_variant": "485646409345615",
               "price": "600",
               "quantity": "1",
               "variant_name": "Default Title"
             }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
     }
}

Add shipping info

Type: client-side

{
    "event": "add_shipping_info_eyk",
    "ecommerce": {
         "value": "600",
         "currency": "EUR",
         "cart_quantity": "1",
         "items": [
             {
               "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
               "item_brand": "Hydrogen Vendor",
               "item_category": "Gifts",
               "item_id": "9143899914523",
               "item_name": "The Collection Snowboard: Hydrogen",
               "item_sku": "SKU-76543281",
               "item_variant": "485646409345615",
               "price": "600",
               "quantity": "1",
               "variant_name": "Default Title"
             }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK"
     }
}

Purchase

Type: client-side

{
    "event": "purchase_eyk",
    "ecommerce": {
        "cart_quantity": "1",
        "value": "600",
        "coupon": "test",
        "currency": "EUR",
        "discount": "test",
        "discount_amount": "90.00",
        "discount_percentage": "15",
        "shipping": "0",
        "sub_total": "510",
        "tax": "0",
        "transaction_id": "5937102258459",
        "items": [
            {
               "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
               "item_brand": "Hydrogen Vendor",
               "item_category": "Gifts",
               "item_id": "9143899914523",
               "item_name": "The Collection Snowboard: Hydrogen",
               "item_sku": "SKU-76543281",
               "item_variant": "485646409345615",
               "price": "600",
               "quantity": "1",
               "variant_name": "Default Title"
             }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK",
        "new_customer": true
     }
}

Purchase (webhook)

Type: server-side

{
    "event": "purchase_webhook_eyk",
    "ecommerce": {
        "cart_quantity": "1",
        "value": "600",
        "coupon": "test",
        "currency": "EUR",
        "discount": "test",
        "discount_amount": "90.00",
        "discount_percentage": "15",
        "shipping": "0",
        "sub_total": "510",
        "tax": "0",
        "transaction_id": "5937102258459",
        "items": [
            {
               "image_url": "https://example-store.com/images/snowboard-hydrogen.png",
               "item_brand": "Hydrogen Vendor",
               "item_category": "Gifts",
               "item_id": "9143899914523",
               "item_name": "The Collection Snowboard: Hydrogen",
               "item_sku": "SKU-76543281",
               "item_variant": "485646409345615",
               "price": "600",
               "quantity": "1",
               "variant_name": "Default Title"
             }
         ]
     },
     "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK",
        "new_customer": true
     },
     "cookies": {
        "__eui": "28e7e120-d123-4567-8910...",
        "_fbc": "fb.1.1707923456.IwAR0...",
        "_fbp": "fb.1.1707923456.1234567...",
        "_ga": "GA1.1.123456789.1707923...",
        "_gcl_aw": "GCL.1707923456.IwAR0_Q...",
        "_gcl_au": "1.1.1234567890.1707923...",
        "_uetsid": "28e7e120-d123-4567-8910...",
        "_uetvid": "48b6c450-a123-4567-8910...",
        "_epik": "dj0yJnU9UmFuZG9tUGludGVy...",
        "_ttp": "a1b2c3d4-e5f6-7890-g1h2...",
        "ttclid": "E.C.P.dje8a90d...",
        "awin_awc": "12345_1707923456_a1b2c3d...",
        "__kla_id": "eyIkZXhjaGFuZ2VfaWQiOiAiS...",
        "_kx": "eyIkZXhjaGFuZ2VfaWQiOiAiS...",
        "__oppref": "oppref_a1b2c3d4e5f6...",
        "__obref": "obref_1234567890abcdef..."
     },
     "consent": {
        "ad_storage": "granted",
        "analytics_storage": "granted",
        "ad_user_data": "granted",
        "ad_personalization": "granted"
     }
}

The cookie object holds these cookies:

Cookie	Meaning
`__eui`	Eyk User ID
`_fbc`	Meta (Facebook/Instagram) Click ID
`_fbp`	Meta (Facebook/Instagram) Browser ID
`_ga`	Google Analytics Client ID
`_gcl_aw`	Google Ads Click ID (GCLID)
`_gcl_au`	Google Marketing Platform Conversion Linker
`_uetsid`	Microsoft (Bing) Session ID
`_uetvid`	Microsoft (Bing) Visitor ID
`ttclid`	TikTok Click ID
`_ttp`	TikTok Pixel ID
`_epik`	Pinterest Click ID
`awin_awc`	Awin Click ID
`__kla_id`	Klaviyo Identity Cookie
`_kx`	Klaviyo Tracking Cookie (exchange ID)
`__oppref`	OpenAI Ads Click Reference
`__obref`	OpenAI Ads Browser Reference

The consent object passes the user’s explicit choices about data collection, formatted according to Google Consent Mode v2. Accepted values: granted, denied.

Subscription start

Type: client-side & server-side

{
    "event": "subscription_start_eyk",
    "ecommerce": {
        "currency": "EUR",
        "value": "100",
        "items": [
            {
               "image_url": "https://example-store.com/images/subscription-product.png",
               "item_brand": "Subscription Vendor",
               "item_category": "Subscriptions",
               "item_id": "9143899914524",
               "item_name": "Monthly Subscription",
               "item_sku": "SKU-SUB-001",
               "item_variant": "485646409345616",
               "price": "100",
               "quantity": "1",
               "variant_name": "Monthly Plan"
           }
        ]
    },
    "user_data": {
        "city": "Rotterdam",
        "country": "NL",
        "customer_id": "12349878",
        "email": "example@eykdata.com",
        "first_name": "Eyk",
        "last_name": "Data",
        "phone": "+31612345678",
        "region": "Zuid-Holland",
        "street": "Stationsplein",
        "zip": "3013AK",
        "new_customer": true
    }
}

Server-side tracking

Destinations

Agentic

How-to guides

Event specification

Page load

View item

View collection

Add to cart

View cart

Begin checkout

Add payment info

Add shipping info

Purchase

Purchase (webhook)

Subscription start

​Page load

​View item

​View collection

​Add to cart

​View cart

​Begin checkout

​Add payment info

​Add shipping info

​Purchase

​Purchase (webhook)

​Subscription start

Page load

View item

View collection

Add to cart

View cart

Begin checkout

Add payment info

Add shipping info

Purchase

Purchase (webhook)

Subscription start