Agent Memory Hack Night | Mastra x Elasticsearch

Build AI Agents That Remember Join Mastra and Elastic for a hands-on hack night exploring agent memory. Most AI agents start every conversation from scratch. They forget what a user told them, repeat suggestions that already failed, lose track of progress, and sometimes rely on outdated information instead of what happened most recently. At this hack night, you’ll build an agent that can use information from the past to make better decisions in the present. Your agent might remember: A user’s preferencesWhat has already been triedProgress toward a goalPrevious decisions and their rationaleImportant events or changesWhat should happen next You’ll also explore an important memory challenge: not everything from the past should be treated equally. Recent information may be more relevant than older information, and a new decision may need to replace or outweigh an outdated one. After a short introduction and demo, we’ll spend the rest of the evening building. The stack Mastra Mastra is an open-source TypeScript framework for building AI agents. It handles the agent loop, tools, memory, and workflows, so you can focus on what your agent should do instead of wiring up LLM calls by hand. Elasticsearch Elasticsearch provides the retrieval and memory layer. You can use it as Mastra’s native vector store or explore hybrid search, which combines keyword and semantic matching to help your agent find the right context. What can you build? Build anything that becomes more useful when it can access relevant information or remember what happened before. A few ideas: A learning coach that remembers a student’s progressA customer-support assistant that knows what has already been triedA research agent that tracks sources, findings, and open questionsA travel planner that remembers preferences and past feedbackA project assistant that recalls decisions and next stepsA creative collaborator that maintains continuity across sessions Bring your own data, use one of our starter datasets, or begin with one of the examples provided. Developers, data practitioners, designers, product builders, and first-time agent builders are all welcome. No prior experience with Mastra or Elasticsearch is required. There will be food, drinks, prizes, and plenty of people available to help. Bring your laptop and your ideas. We’ll provide the tools and starter resources. How it works 5:00 PM - Doors openGrab food and drinks, meet other attendees, and get settled. 5:30 PM - Kickoff and demoWe’ll introduce the challenge, walk through the tools, and show a working example. 5:45 PM - Build timeChoose an idea and start building. Technical? Great. New to coding or AI agents? Also great. We’ll help you get set up and provide starter projects so you can begin quickly. 8:00 PM - Show and tellShare what you built with the room, no matter how finished it is. After the demos, we’ll award prizes to the top three projects. FAQ Where is the event? This is an in-person event at the Elastic office in San Francisco: 33 New Montgomery Street, 9th FloorSan Francisco, CA 94108 Who can participate? Everyone. All skill levels and backgrounds are welcome. Do I need to bring my own data? No. You may bring your own dataset, but we’ll also provide starter data and example projects. Please do not bring confidential, sensitive, or proprietary data unless you are authorized to use it. Can I start my project before the event? You may think about ideas beforehand, but all project implementation must take place during the hack night. Do I have to attend in person? Yes. This event is in person only. Please RSVP if you plan to attend.