Overview

Fullstory uses a single "event-centric" schema to model the data that passes through Fullstory's systems. This schema is designed to be flexible and extensible, allowing for additions to this model without having to perform expensive migrations. In this model, the *_type suffixed fields indicate the shape of the *_properties objects.

Identifiers

The three identifiers that are used to associate events are:

• device_id
• session_id
• view_id

If you are using Fullstory with session replay, you can use these identifiers construct a URL to the session. For example, if your Organization ID is ORG_ID and are using Fullstory's North America data center, the URL to a session would be https://app.fullstory.com/ui/ORG_ID/session/<device_id>:<session_id>.

Viewing the session requires that the session is still within your organization's retention period and that the session was not sampled.

In some cases, session_id and view_id may not be present in the event. This usually indicates that the event was sent using the server API and was not associated with a session.

Source Info

Every event contains contextual information about where that event came from and how the event was passed into Fullstory. The source_type indicates where the event came from and the source_properties field contains additional information about the event source.

Base Event Model

The following table describes the common fields present for events in each destination.

Field	Type	Description
device_id	integer	The device ID indicates a unique recording device for the event. For web recording, the ID corresponds to a unique user cookie. For mobile recording, this corresponds to a single app/device combo. This field is always present.
session_id	integer	If present, Unique id associating multiple events to the same session. This id is unique for any given device_id.
view_id	integer	If present, Unique id associating multiple events to a single page, screen or tab. This id is unique for any given device_id and session_id.
event_time	timestamp	The time in UTC that the event occurred. Format is RFC 3339 to millisecond precision (e.g. 2006-01-02T15:04:05.000000Z).
event_type	string	The type of the event.
event_properties	object	An object containing the data for corresponding to the event_type.
source_type	string	The Source Type of the event.
source_properties	object	The Source Properties corresponding to the source_type.

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Events

An event is the core data model in Fullstory. Each event can describe one of a few distinct classes of information:

• Direct user interactions: An action that a user took. Examples include click, change, and navigate.
• System events: An event that was initiated by a browser, an API, or injected by the capture client. Examples include load, custom, and exception.
• Interpreted or aggregate events: An event that was injected after capture by Fullstory's servers. Examples include form_abandon and mouse_thrash.

This section describes the possible event_types and the associated event_properties that are present in the event.

Common Event Properties

The following properties may be present in event_properties for all event types.

Field	Type	Description
event_definition_id	string	The ID of the most specific matching user-configured Defined Event.
additional_event_definition_ids	array of strings	Additional matching event definition IDs.

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background

Indicates that the mobile app was backgrounded.

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change

Indicates a change in the value of an input element such as a text input, checkbox, or radio button. Continuous updates are coalesced into a single change event. For example, if "f" -> "fo" -> "foo" is typed into an input element, the change event will only contain "foo".

Property	Type	Description
target	EventTarget object	The target of the change event.
fs_suspicious_kind	array of enums	Indicates any suspicious activity detected in the change event. Possible values: - sql_injection: The activity appears to be a SQL injection attack. - xss: The activity appears to be a cross-site scripting (XSS) attack.

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click

Indicates a primary click (typically left-click) in web, or a tap in mobile. Triggers when a user clicks or taps on an element.

Property	Type	Description
target	EventTarget object	The target of the click event.
fs_rage_count	int64	If greater than 0, indicates that the click was part of a rage click sequence. Learn more.
fs_dead_count	int64	This value will be 1 if the click did not have an effect on the page, thus is considered dead. Learn more.
fs_error_kind	enum	If present, indicates an error click. Learn more. Possible values: - unknown: The reason for the error click was unknown. - console: The source of the error was a console.error() message. - exception: The source of the error was an exception.
is_click_long	bool	If true, indicates that the click was a long click. Only available on mobile.
is_click_unhandled	bool	If true, indicates that the click was unhandled. Only available on mobile.

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consent

Indicates that the user has given or revoked consent for capture. Fires with FS.consent() or FS('setIdentity', { consent }) or is added based on previous consent state. Learn more.

Property	Type	Description
is_consent_given	bool	If true, then a user has consented to capture elements that require consent.
consent_scope	enum	The scope of the provided consent. Possible values: - document: Document is the only possible value for consent scope.
consent_action_type	enum	Indicates how this consent event was added during capture. Possible values: - report_consent: Consent was injected based on the current state of the user's consent. - set_consent: Consent was set directly by the user or API.

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console_message

Indicates a logging message. For web, this event is limited to errors via a console.error call. For mobile, this is a log from the FullStory SDK.

Property	Type	Description
console_message_level	enum	The level that the console message was logged at. Possible values: - error
message	string	The text of the console message.

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copy

Indicates that the user copied highlighted text on the page.

Property	Type	Description
target	EventTarget object	The target of the copy event. The text field indicates the copied text.

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crash

Indicates that a mobile app has crashed.

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cumulative_layout_shift

Indicates the CLS score for a page. This is calculated using the LayoutShift API and may not be available in all browsers. The score is calculated in accordance with the CLS definition.

Property	Type	Description
cumulative_layout_shift	double	The Cumulative Layout Shift (CLS) score for the page.

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custom

Indicates a user-defined event was fired with FS.event() or FS('trackEvent', {...}).

Property	Type	Description
event_name	string	The name of the custom event as provided by the API.
event_properties	object	An object containing the parsed payload of the custom event.
fs_api_errors	array of FsApiError objects	Any errors that occurred while processing the custom event.

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element_seen

Indicates that a watched element has been rendered or has become visible in the viewport. There are three subtypes of this event: rendered, visible, and end. The visible subtype will be emitted when at least 25% of the element is visible in the viewport. The rendered subtype will be emitted if the element is rendered but not visible. The end subtype will be emitted when the element's lifecycle is complete and will contain the total time the element was rendered and visible.

Property	Type	Description
element_type	enum	Possible values: - rendered: Indicates that the watched element was rendered, but not visible in the viewport. - visible: Indicates that the watched element was visible in the viewport. - end: Indicates the end of the watched element's lifecycle.
element_render_duration_millis	integer	The amount of time that the element was rendered.
element_visible_duration_millis	integer	The amount of time that the element was visible.
element_start_type	enum	The type of the Watched Element at the element_start_time. Possible values: - rendered: Indicates that the watched element was rendered, but not visible in the viewport. - visible: Indicates that the watched element was visible in the viewport. - end: Indicates the end of the watched element's lifecycle.
element_start_time	int64	The time at which the Watched Element was first rendered or made visible.
target	EventTarget object	The watched element target.

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exception

Indicates that an exception occurred. For web, this is a JavaScript exception. For mobile, this is a native exception.

Property	Type	Description
exception_source_file	string	The source file that produced the exception.
exception_count	int32	The number of times that this exception fired within a given window (useful for batching bursts of exceptions fired).
is_exception_handled	bool	Whether the exception is caught or not.
message	string	The message associated with the exception.

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first_input_delay

Indicates the delay between the first user input and when the browser responds. Triggers when PerformanceEventTiming is reported with type 'first-input' for the first time on a web page

Property	Type	Description
first_input_delay_millis	integer	The time from the first user input event to the browser's response.

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form_abandon

Indicates that a user started filling out a form but did not submit it.

Property	Type	Description
target	EventTarget object	The target indicates the form that was abandoned.

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highlight

Indicates that a user highlighted text on the page.

Property	Type	Description
target	EventTarget object	The target of the highlight event. The text field indicates the highlighted text.

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identify

Indicates a user-defined event was fired with FS.identify(), FS('setIdentity', {...}), FS.setUserVars(), or FS('setProperties', { type: 'user', properties })`. Identify events are also injected by FullStory at the beginning of a capture to provide a snapshot of the user's properties at the time the data was ingested.

Property	Type	Description
user_id	string	The unique ID for the user provided through the API.
user_email	string	If present, the email address for the user.
user_display_name	string	The display name for the user as provided through the API. If none is provided, this will be generated by the Fullstory backend.
user_properties	object	An object containing the parsed payload of the user properties provided through the API.
fs_api_errors	array of FsApiError objects	Any errors that occurred while processing the user properties.

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interaction_to_next_paint

Indicates the longest time between a user interaction and the next paint, ignoring outliers. This can used to assess a page's responsiveness to user input. This value is taken from PerformanceEventTiming when the entryType is event.

Property	Type	Description
interaction_to_next_paint_millis	integer	The time from the first user input event to the next paint event.
event_name	string	The name of the event that triggered the first user input as reported by the browser. Examples are: keydown and mouseover.

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keyboard_close

Indicates that the mobile keyboard was closed. Mobile Apps only.

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keyboard_open

Indicates that the mobile keyboard was opened. Mobile Apps only.

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load

Captures various performance timings of a page load for a web browser. Triggers when the timings have been finalized. Web only.

Property	Type	Description
dom_content_time_millis	integer	The time it took for the document to be parsed and the DOM tree to be constructed.
first_paint_time_millis	integer	The time of the First Contentful Paint (FCP).
load_time_millis	integer	The time it took for the page to load completely.
largest_paint_time_millis	integer	The time of the Largest Contentful Paint (LCP).
time_to_interactive_millis	integer	The Time to Interactive (TTI) is the time it takes for the page to become fully interactive.
total_blocking_time_millis	integer	The Total Blocking Time (TBT) is the total amount of time that the page was blocked after the FCP.
time_to_first_byte_millis	integer	The Time to First Byte (TTFB) is the time it takes for the first byte of the response to be received.

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low_memory

Indicates that capture was stopped due to low device memory. On Android, this is triggered when there is 10% or less RAM available. On iOS, this is triggered on this event.

Property	Type	Description
memory_available	int64	The amount of memory available on the device at the time of the event.
memory_maximum	int64	The maximum amount of memory available on the device.

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mouse_thrash

Indicates a series of rapid mouse movements within a short time frame.

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navigate

Indicates a change in the URL of the page for web sources, and a change in the screen for mobile sources. Triggers when the URL or screen changes including the initial navigation.

Property	Type	Description
navigate_reason	enum	Possible values: - navigate: Navigation started by clicking a link, entering the URL in the browser's address bar, form submission, or initializing through a script operation other than reload and back_forward as listed below. - reload: Navigation is through the browser's reload operation, location.reload(), or a Refresh pragma directive. - back_forward: Navigation is through the browser's history traversal operation. - prerender: Navigation is initiated by a prerender hint.
fs_suspicious_kind	array of enums	Indicates any suspicious activity detected in the navigate event. Possible values: - sql_injection: The activity appears to be a SQL injection attack. - xss: The activity appears to be a cross-site scripting (XSS) attack.

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page_properties

Indicates that the page properties were set with FS.setPageVars() or FS('setProperties', { type: 'page', properties }).

Property	Type	Description
page_name	string	The name of the page as provided through the API.
page_properties	object	An object containing the parsed payload of the page properties provided through the API.
fs_api_errors	array of FsApiError objects	Any errors that occurred while processing the page properties.

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paste

Indicates that the user pasted text into an input field on the page.

Property	Type	Description
target	EventTarget object	The target of the past event. The 'text' field indicates the pasted text.

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pinch_gesture

Indicates that the user performed a pinch gesture with a touch device.

Property	Type	Description
pinch_gesture_type	enum	Possible values: - in: Indicates the pinch led to a scale in. - out: Indicates the pinch led to a scale out.
pinch_visual_scale_change	double	The change in the visual viewport after a finger pinch. If the change > 1.0, it implies scale in. If the change < 1.0, it implies scale out. If the change is exactly 1.0, it means a failed finger pinch.
pinch_scale	double	Scale determines the overall page scale at the end of the pinch. It is the ratio of the layout viewport dimensions to visual viewport dimensions. When the page is scaled out to max, the scale is 1.0 and greater than 1.0 otherwise.

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request

Indicates a network request that resulted in a 400 or 500 level status code.

Property	Type	Description
request_method	string	The HTTP request method (GET, POST, etc).
request_url	Url object	The request URL.
request_status	int32	The HTTP status code of the request.
request_duration_millis	integer	The duration of the request.

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Sources

The "source" describes the context of the event. It includes information about where the event came from and how the event was passed into Fullstory. This includes information such as URL or of the event (or screen for Mobile Apps), device information, and capture information. This section describes the possible source_types and the associated source_properties that are present in the event.

Common Source Properties

The following properties may be present in source_properties for all source types.

Field	Type	Description
entrypoint	string	If present, indicates how the event was created, including from the Fullstory capture script. Some examples are: web client, setVars, event, and POST /v2/users. Support for this field not guaranteed across all capture clients.
origin	string	If present, indicates where the event was generated. Some examples are: dom and server.
integration	string	If present, indicates the integration that generated the event. For Fullstory built capture sources, this value will be fs. Examples include dlo, segment, and zendesk. Support fot this field is not guaranteed across all integrations.
page_definition_id	string	The ID of the Page as defined in the FullStory app.
location	Location object	The location associated with the capture of the event. Learn more.
device	Device object	Information about the device associated with the event. For web events, similar information is available in the user_agent field.

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mobile_app

Indicates that the event was sent to Fullstory through a Fullstory mobile SDK.

Property	Type	Description
app_screen_name	string	The name of the mobile app screen on which the event occurred.
build_variant	string	Android build variant (e.g. debug, release).
app_id	string	Identifies a run of FSCLI during iOS native mobile builds.
app_name	string	The name of the mobile app that produced the event.
app_package_name	string	Code-level package name of a mobile app, e.g. com.fullstory.sampleapp.latest.
app_version	string	Mobile app version, e.g. 25.0.1.

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server

Indicates that the event was sent to Fullstory through a server-side API.

Property	Type	Description
user_agent	UserAgent object
url	Url object
initial_referrer	Url object
app_screen_name	string
build_variant	string
app_id	string
app_name	string
app_package_name	string
app_version	string

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web

Indicates that the event was sent to Fullstory through the browser API.

Property	Type	Description
user_agent	UserAgent object	The user agent of the browser that generated the event.
url	Url object	The URL of the page when the event occurred.
initial_referrer	Url object	The referrer from the the first navigation event in the "view".

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Common Objects

This section describes the common objects that are used in the event_properties and source_properties objects.

EventTarget

Property	Type	Description
raw_selector	string	The full selector path to the event's target element.
text	string	The relevant text of the event's target element, such as inner text for click events and values for input change events.
masked	bool	If true, indicates that the target text is empty because it was masked due to a privacy rule.
element_definition_id	string	The ID of the most specific, matching user-configured Named Element.
additional_element_definition_ids	array of strings	Additional matching Named Element IDs.

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Url

Property	Type	Description
full_url	string	A full URL including the protocol, host, path, query, and hash.
host	string	The host portion of the URL. e.g. www.example.com.
path	string	The path portion of the URL. e.g. /path/to/page.
query	object	The query portion of the URL, structured as an object where the key is the query parameter name and the value is a list of values for that parameter. For example, /path/to/page?foo=bar&baz=qux&baz=boop would be represented as { "foo": { "values": ["bar"] }, "baz": { "values": ["qux", "boop"] }}.
hash_path	string	The hash path of the URL. e.g. #/path/to/page would be represented as /path/to/page.
hash_query	object	The hash query of the URL, structured as an object where the key is the query parameter name and the value is a list of values for that parameter. For example, #/path/to/page?foo=bar&baz=qux&baz=boop would be represented as { "foo": { "values": ["bar"] }, "baz": { "values": ["qux", "boop"] }}.

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FsApiError

Property	Type	Description
reason	enum	The reason for the error. Possible values: - missing_type: Property missing type suffix. - invalid_name: Invalid property name. - id_immutable: Immutable id violation. - id_invalid: Invalid id. - name_too_long: Property name too long. - value_too_big: Property value too big. - too_big_to_parse: JSON too big to parse. - expected_primitive: Property value should have been a primitive type. - invalid_type: Property has invalid type suffix. - invalid_json: Invalid JSON. - invalid_value: Property value doesn't match expected type. - invalid_event_name: Invalid custom event name. - page_prop_max_per_page: Max properties per page - page_name_changed: pageName changed without a change in the PageView - unset_name_mismatch: the page name given in unset did not match the current page - unmatched_unset: an unset was received while not in a page - elem_prop_max_per_event: Max element properties per event
field	string	If present, the name/key of the field that is invalid.
value	string	If present, the json representation of the invalid value.

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UserAgent

Property	Type	Description
raw_user_agent	string	An unprocessed user agent string. This value is used to derive the following fields. There may be cases where this string is not in a known format, in which case the derived fields will be either Unknown or null.
device	string	If present, the type of device. Example values include: Tablet, Mobile, Desktop, Robot.
operating_system	string	If present, the operating system of the device. Example values include: Windows, OS X, iOS, Android, and Linux.
browser	string	The browser used by the device or Unknown. Example values include: Chrome, Safari, Firefox, Microsoft Edge, and Custom Agent.
browser_version	string	If present, the version of the browser. This field will only be present if the version is of the format major.minor.build.patch where each subversion is optional (e.g. 10A is a valid version). Otherwise, this field will be null.

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Location

Property	Type	Description
ip_address	string	If present, the IP address at the start of the associated capture instance. That is, this will be the same for all events with the same device_id, session_id, and view_id.
country	string	If present, the country associated with the IP address.
region	string	If present, the name of the region associated with the IP address.
city	string	If present, the name of the city associated with the IP address.
lat_long	string	If present, the latitude and longitude associated with the IP address. The format is "latitude,longitude".

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Device

Property	Type	Description
manufacturer	string	If present, the manufacturer of the device. Generally available for Mobile Apps, but may also be provided by the server API. Examples include: Apple, Samsung, Google, and Microsoft.
model	string	If present, the model of the device. Generally available for Mobile Apps, but may also be provided by the server API. Examples include: iPhone12,5, Pixel 5, and Surface Pro 7 and SM-G950F.
operating_system	string	If present, the operating system of the device. Generally available for Mobile Apps, but may also be provided by the server API.
os_version	string	If present, the version of the operating system. Generally available for Mobile Apps, but may also be provided by the server API.
screen_height	int32	Indicates the screen height of the device in pixels.
screen_width	int32	Indicates the screen width of the device in pixels.
viewport_height	int32	Indicates the height of the viewport in pixels at the time of the event. Generally available for web sources, but may also be provided by the server API.
viewport_width	int32	Indicates the width of the viewport in pixels at the time of the event. Generally available for web sources, but may also be provided by the server API.

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