Documentation
Get Apex running.
Then learn from it.
Install Apex, identify your customers, run experiments, and turn what you learn into the next Adaptive Journey.
Quickstart
Paste the snippet, identify a customer, define a conversion, and run your first experiment.
Tracking snippet
Add apex.js to your site for page views, experiments, and form tracking.
SDK
Track events and identify customers from JavaScript or TypeScript.
Identify customers
Stitch anonymous visits to a known person after they sign in.
Server Events API
Send conversion events from your backend via /api/v1/events with an API key.
First Adaptive Journey
Publish a welcome sequence and measure lift against the holdout.
The Apex Spec
Canonical event names every Apex SDK fires and every Apex surface reads.
API Reference
Events, experiments, beliefs, conversions, journeys, and segments.
Integrations
Connect Google Ads, GA4, HubSpot, Meta, LinkedIn, Stripe, and Clarity.
MCP Server
Use Apex from your IDE with AI coding agents via the Model Context Protocol.
Concepts
The models behind the product
Read these before you wire events, if you want the words Apex uses on screen.