Identities

Identities allow you to attach permanent traits to a user_id. When you send events with that user_id, SeerStack automatically associates the event with these traits.

Identifying Users

Call users.identify when a user signs up or updates their profile. You only need to send the fields that have changed.

TypeScript
Ruby
cURL

import Seerstack from 'seerstack';

const client = new Seerstack({
  apiKey: process.env['SEERSTACK_API_KEY'],
});

await client.users.identify({
  user_id: 'user_123', // Your internal ID
  email: 'grace@hopper.com',
  name: 'Grace Hopper',
  attributes: {
    plan: 'enterprise',
    team_size: 15,
    is_admin: true
  }
});

require "seerstack"

seerstack = Seerstack::Client.new(
  api_key: ENV["SEERSTACK_API_KEY"]
)

seerstack.users.identify(
  user_id: "user_123", # Your internal ID
  email: "grace@hopper.com",
  name: "Grace Hopper",
  attributes: {
    plan: "enterprise",
    team_size: 15,
    is_admin: true
  }
)

curl -X POST https://api.seerstack.com/identify \
  -H "Authorization: Bearer $SEERSTACK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "user_id": "user_123",
    "email": "grace@hopper.com",
    "name": "Grace Hopper",
    "attributes": {
      "plan": "enterprise",
      "team_size": 15,
      "is_admin": true
    }
  }'

Identity Fields

Field	Type	Required	Description
`user_id`	string	Yes	Your internal user ID (database primary key).
`email`	string	No*	The user’s email address.
`name`	string	No*	The user’s display name.
`attributes`	object	No	Custom attributes for filtering and segmentation.

Either email or name must be provided when identifying a user.

Automatic Enrichment

Once a user is identified, you can use their attributes in your dashboard filters.

If you filter by attributes.plan = 'enterprise', SeerStack will find all events triggered by users with that plan, even if the event payload itself didn’t contain the plan name.

Updating User Attributes

You can call identify multiple times. Each call merges new attributes with existing ones.

TypeScript
Ruby

// Initial identification
await client.users.identify({
  user_id: 'user_123',
  email: 'grace@hopper.com',
  attributes: { plan: 'free' }
});

// Later, when user upgrades
await client.users.identify({
  user_id: 'user_123',
  attributes: { plan: 'enterprise', upgraded_at: new Date().toISOString() }
});

# Initial identification
seerstack.users.identify(
  user_id: "user_123",
  email: "grace@hopper.com",
  attributes: { plan: "free" }
)

# Later, when user upgrades
seerstack.users.identify(
  user_id: "user_123",
  attributes: { plan: "enterprise", upgraded_at: Time.now.iso8601 }
)

Best Practices

Use Stable IDs

Use your database’s primary key (e.g., UUID) as the user_id, not an email address or username which might change.

Identify Early

Call identify as soon as your user logs in to ensure subsequent events are correctly attributed.

Keep Attributes Clean

Use consistent naming for attributes across your codebase. Prefer snake_case for attribute keys.

Don't Over-Identify

You don’t need to call identify on every request. Once is enough until attributes change.

Getting Started

Essentials

API Reference

Endpoints

Identifying Users

Identity Fields

Automatic Enrichment

Updating User Attributes

Best Practices

Use Stable IDs

Identify Early

Keep Attributes Clean

Don't Over-Identify

​Identifying Users

​Identity Fields

​Automatic Enrichment

​Updating User Attributes

​Best Practices

Use Stable IDs

Identify Early

Keep Attributes Clean

Don't Over-Identify

Identifying Users

Identity Fields

Automatic Enrichment

Updating User Attributes

Best Practices