Applovin Axon

26 min

Introduction

AppLovin Axon is a measurement and audience platform that helps advertisers track conversions, optimize campaigns, and build targeted audiences. The Axon pixel collects event data from your website to power AppLovin's ad optimization engine.

Getting Started

This is a device-mode destination requiring an Axon Event Key for connection. You can obtain the Event Key from your AppLovin dashboard.

Initialization

When the Axon destination is enabled, p.js injects the Axon pixel scripts into the page on first event:

https://s.axon.ai/pixel.js

https://c.albss.com/p/l/loader.iife.js

Before the scripts load, a window.axon stub is created that queues all calls. Once the real SDK loads it replays the queue automatically, so no events are lost during initialization. axon("init") is called immediately after the stub is created to begin the SDK initialization handshake.

Preconnect and DNS-prefetch hints for https://s.axon.ai and https://c.albss.com are also injected to reduce script load latency.

Connecting to the Axon CDP Destination

Warning: Before connecting destinations in the Chord CDP, please verify with all Destination owners that all non-Chord CDP configured destinations are disabled. Running external destinations alongside configured Chord CDP destinations can result in duplicate events downstream.

Log into the Chord data platform.

Navigate to the CDP.

Click the "Add" button next to Destinations.

Select AppLovin Axon from the destination catalog.

Enter the destination name and Axon Event Key.

Click "Create" to connect.

Events

Event Mapping

Chord event names are mapped to Axon standard event names. Unmapped event names are passed through as-is.

Required Events (Purchase Sites)

Chord Event	Axon Event
Product Viewed	view_item
Product Added	add_to_cart
Checkout Started	begin_checkout
Order Completed	purchase

Recommended Events

Chord Event	Axon Event
Payment Info Entered	add_payment_info
Cart Viewed	view_cart
Product Removed	remove_from_cart
Products Searched	search
Signed Up	sign_up
Logged In / User Logged In	login
Subscribe / Subscribed	subscribe
Lead Generated	generate_lead

Event Details

Page

Fires an Axon page view tracking call.

Axon SDK call: axon("track", "page_view")

No additional attributes are sent with page events.

Identify

Sends user identity to Axon.

Axon SDK call: axon("identify", userId, traits?)

Axon Attribute	Chord Source (Priority Order)	Notes
userId	userId > anonymousId	Required; event is skipped if neither is set
traits	traits	Optional; only sent if non-empty

Track

Sends a tracked event to Axon. The payload structure varies by event type.

Common Attributes (All Track Events)

The following attributes are included on every track event when the source data is available:

Axon Attribute	Chord Source (Priority Order)	Notes
user_data.email	properties.email > context.traits.email	user_data object is only included if at least one of email, phone, or user_id is present
user_data.phone	properties.phone > context.traits.phone
user_data.user_id	userId > traits.userId > context.traits.userId

Common Attributes (Item-Based Events)

The following events also include items, currency, and value: view_item, add_to_cart, begin_checkout, purchase, add_payment_info, view_cart, remove_from_cart.

Axon Attribute	Chord Source (Priority Order)	Notes
items	properties.products	Array of Axon items (see Item Attributes below). Products without an identifiable ID are filtered out.
currency	properties.currency > properties.meta.i18n.currency > "USD" (default)
value	properties.total > properties.revenue > properties.value > properties.price > sum of product prices

Item Attributes

Each product in properties.products is transformed to an Axon item:

Axon Attribute	Chord Source (Priority Order)	Notes
item_id	product_id / productId > id / sku / variant_id	Required; product is excluded if none resolve
item_name	name / productName / product_name
price	price / productPrice
quantity	quantity / productQuantity
image_url	image_url
item_variant_id	variant_id
item_brand	brand
affiliation	affiliation
discount	discount
item_category_id	item_category_id

Order Completed

Fires a purchase event. Includes the common item-based attributes above, plus:

Axon SDK call: axon("track", "purchase", properties)

Axon Attribute	Chord Source (Priority Order)	Notes
transaction_id	properties.order_id / properties.orderId
tax	properties.tax
shipping	properties.shipping

Payment Info Entered

Fires an add payment info event. Includes the common item-based attributes above, plus:

Axon SDK call: axon("track", "add_payment_info", properties)

Axon Attribute	Chord Source (Priority Order)	Notes
payment_type	properties.payment_type > properties.payment_method

Products Searched

Fires a search event.

Axon SDK call: axon("track", "search", properties)

Axon Attribute	Chord Source (Priority Order)	Notes
search_term	properties.search_term > properties.query > properties.term
results	properties.results	Array of items, transformed using the same item mapping
currency	properties.currency > properties.meta.i18n.currency > "USD" (default)	Optional
value	properties.value	Optional

Signed Up

Fires a sign-up event.

Axon SDK call: axon("track", "sign_up", properties)

Axon Attribute	Chord Source	Notes
method	properties.method	Optional

Fires a subscribe event.

Axon SDK call: axon("track", "subscribe", properties)

Axon Attribute	Chord Source	Notes
currency	properties.currency	Optional
value	properties.value	Optional

Logged In / User Logged In

Axon SDK call: axon("track", "login")

No additional attributes are sent.

Lead Generated

Axon SDK call: axon("track", "generate_lead")