What is Mastra?

Mastra is an open-source TypeScript framework for building AI-powered applications and agents. It provides AI primitives including agents, workflows, memory, MCP servers, observability, and evals for TypeScript and JavaScript developers. Mastra integrates with frontend and backend frameworks like React, Next.js, and Node, or can be deployed anywhere as a standalone server.

How to use Mastra?

To get started with Mastra, create a new project by running `npm create mastra@latest <project-name> -- --llm <provider>` and follow the prompts. After creation, enter the project directory and start the dev server with `npx bgproc start -n <project-name> -w -- npm run dev`. Open Mastra Studio at `http://localhost:4111` to build, test, and manage agents, workflows, and tools. The Mastra model router provides access to thousands of models.

Core features of Mastra

Agents: Define typed agents with instructions, models, tools, and runtime behavior.
Workflows: Compose typed steps for complex processes.
Memory: Persistent memory with semantic recall and observational memory.
Observability: Metrics, logs, and traces for every run.
Studio: Visual interface for building, testing, and managing agents.
Agent Builder: Collaborate, evaluate, and iterate on agents.
Server: Cloud deployment for agents.
Model Router: Access to thousands of models.