AI Builders SF: Building and Evaluating TypeScript Agents with Mastra and Arize

​Join us at GitHub HQ on November 18th from 5:30 PM to 8:30 PM for an evening of hands-on learning, networking, and collaboration with the TypeScript developer community. Hosted by Arize AI and Mastra, this meetup is designed for AI engineers and developers looking to build and evaluate agents natively in TypeScript.

Enjoy dinner, drinks, and swag while connecting with fellow builders pushing the boundaries of LLM and agent development. You’ll walk away having built your first Mastra agent, learned how to trace and evaluate it, and seen how observability platforms like Arize help measure and improve agent performance in real-world applications.

Agenda
5:30 – 6:15 PM | Networking & Dinner
 Grab food, meet fellow developers, and connect with the teams from Arize and Mastra.

6:15 – 7:00 PM | Building Your First Mastra Agent (Sam Bhagwat, Mastra)
Learn how to create and deploy an agent using Mastra, the leading framework for building agents in TypeScript. This session dives deep into the fundamentals of agent construction -- building an agent, calling tools, giving it memory, creating a supervisor model, delegating to a workflow, and adding tracing and evals.

7:00 – 7:45 PM | Evaluating and Tracing Agents with Arize (Sri Chavali, Arize AI)
 Once your agent is up and running, see how to evaluate its performance and trace its behavior using Arize. Discover how to run your first eval in TypeScript, visualize agent activity, and understand what’s working (and what’s not) through data-driven insights.

7:45 – 8:30 PM | Open Networking & Drinks
 Stick around for informal conversation, meet the speakers, and connect with other builders in the AI and TypeScript community.