Fullstory Identify Users API

Implementation Files: This document covers core concepts. For code examples, see:

• SKILL-WEB.md — JavaScript/TypeScript (Browser)
• SKILL-MOBILE.md — iOS, Android, Flutter, React Native

Overview

Fullstory's User Identification API allows developers to associate session data with your own unique customer identifiers. By calling setIdentity, you link a user's Fullstory session to their identity in your system, enabling you to:

• Search for sessions by customer ID
• View all sessions for a specific user across devices
• Connect Fullstory data with your internal analytics and CRM systems
• Attribute behavior patterns to known users

Core Concepts