Moesif Segment Plugin

The Segment integration is installed simply by connecting your Moesif account to your Segment account and doesn’t require any code changes. The integration can be used both as a Segment destination and a source.

Segment destination

As a Segment destination, Segment will sync user traits and tracked events to Moesif. Moesif also associates your web activity to API traffic so you can analyze the end to end customer journey and funnel metrics.

Use the Moesif API Analytics Destination if you want to:

  • Enrich users in Moesif to understand API usage by acquisition channels and customer demographics.
  • Correlate API calls in Moesif with events tracked by Segment
  • Track funnel metrics like Time to First Hello World (TTFHW) and conversion rate

The below Diagram shows how both Segment and a Moesif server integration to track both web and API traffic made by a customer.

Diagram of Moesif Moesif and Segment architecture

For more info, see Moesif Segment Destination.

Segment source

As a Segment source, Moesif will sync Moesif user profiles and their API metrics to Segment.

Use the Moesif API Analytics Source if you want to:

  • Track API usage in tools like Amplitude and Mixpanel.
  • Trigger email sequences in tools like HubSpot like when customers approach rate limits.
  • See trial or pilot usage in your CRM to prioritize customer outreach.

Segment is not required to view Moesif data in your sales and marketing tools. Moesif has a variety of extensions for tools like Salesforce and HubSpot.

For more info, see Moesif Segment Source.

How to install

Segment destination

  1. From your Segment UI’s Destinations page click on “Add Destination”.
  2. Search for “Moesif” within the Destinations Catalog and confirm the Source you’d like to connect to.
  3. Enter the Moesif “API Key” into the destinations settings in the Segment App. You can find these by going to your Moesif account account and navigating to the extensions settings.
  4. Once integrated, Segment data shows up in Moesif in a few seconds.

If not done already, associate API calls to a user id by implementing the identifyUser() hook for your respective server integration. This should be the same id you use when calling Segment’s identify() method.

Segment source

  1. From your Segment UI’s Sources page click on “Add Source”.
  2. Select Moesif API Analytics within the Source Catalog and confirm adding the source.
  3. Give the Source a nickname and follow the setup flow to “Add Source”.
  4. Copy the Write Key from the added source. You’ll need this later in Moesif.
  5. Log into your Moesif account, go to the Settings menu and click Extensions.
  6. Select the Segment Extension within the extensions gallery and add your write key under Add Partner Key.

Adding a Segment HTTP Source

How it works

Segment destination

The Segment destination can be used instead of moesif-browser-js directly to track web activity and supports both identify and track to Moesif.


Segment sends identify() calls to Moesif as user updates. If you set on the user, Moesif also associates it with a company. The integration maps user fields as follows:

Segment Field Moesif Field
userId user_id
traits metadata company_id

The integration handles Segment reserved traits like email and firstName. It also maps automatically-collected fields like campaign information and IP address.


Segment sends track() calls to Moesif as tracked custom actions which you can see in the Events section in Moesif. As an example, you can use Segment’s analytics.js to track when the login button is clicked:

analytics.track('Login Button Clicked')

The integration maps event fields as follows:

Segment Field Moesif Field
event action_name
properties metadata

Both Segment and Moesif support automatic anonymous user tracking. You should only call identify with an actual user id.

Segment source

The segment source will periodically sync user profiles in Moesif to Segment as user traits via a identify() message.

Because API calls contain a very large number of fields and values, they cannot be ingested in a UI event tracking tool like Segment or Amplitude directly as they’re not designed for API data. Instead, Moesif rolls up API usage metrics and adds to the user as a user trait called last24HourAggResults.

Identify Message

Field Type Description
userId String Unique identifier for the user in Moesif
context Object User context like IP address and location.
traits Object Custom traits of the user (See Traits Object)

Traits Object

The integration maps user metadata in Moesif to the Segment trait called metadata. If the user was linked to a company in Moesif, the integration will map the associated company to a Segment trait called company.

Field Type Description
id String User Id (Same as userId in parent object)
createdAt Date Time when user was created in Moesif
modifiedTime Date Time when user was last modified
firstSeenTime Date Time user was first seen on the API
lastSeenTime Date Time user was last seen on the API
name String User’s Full Name
email String User’s email
username String Username such as a Twitter handle
company Object Company in Moesif (See Company Object)
campaign Object Marketing campaign attribution like UTM parameters
enrichment Object Auto-enrichment lookup results for the user
company Object Associated company in Moesif (See Company Object)
last24HourAggResults Object Rollup of user’s API activity from last 24 hours
metadata Object Your user metadata
userAgent Object Last user agent details

Company Object

Info for the associated company. Any company metadata set in Moesif is mapped to the Segment trait company.metadata

Field Type Description
id String Unique identifier for the company in Moesif
created Date Time when company was created in Moesif
modifiedTime Date Time when company was last modified
firstSeenTime Date Time user was first seen on the API
lastSeenTime Date Time user was last seen on the API
ipAddress String Company’s last IP address
companyDomain String Company’s website domain
ttfhw_s Integer Time to First Hello World in seconds
metadata Object Your company metadata