Mastra

What is Mastra?

Mastra is an open-source TypeScript framework for building, observing, and deploying AI agents and applications. It integrates with frontend and backend frameworks like React, Next.js, and Node, or runs as a standalone server. The core framework is licensed under Apache 2.0, while enterprise features are source-available under the Mastra Enterprise License.

What are the features of Mastra?

• Typed agent definition

  Configure agents in code with instructions, models, tools, and runtime behavior using the @mastra/core/agent module.
• Graph-based workflow engine

  Orchestrate multi-step processes using .then(), .branch(), and .parallel() methods, supporting retries, human-in-the-loop approval, and persistent execution state.
• Agent memory system

  Provide durable context through conversation history, semantic recall, observational memory, and data retrieval from APIs, databases, and files.
• Built-in observability and evaluation

  Track latency, cost, model calls, and tool usage via traces, metrics, and logs, and score agent runs using model-graded, rule-based, or statistical methods.
• Model routing

  Connect to over 90 providers, including OpenAI, Anthropic, and Gemini, through a single standard interface.
• MCP server authoring

  Expose agents, tools, and structured resources via the Model Context Protocol (MCP) interface for access by compatible systems.

What are the use cases of Mastra?

• Multi-step order fulfillment

  Chain typed steps like inventory validation and shipment creation into inspectable production workflows that can pause and resume based on stored state.
• Internal knowledge queries

  Build conversational agents for customer support or internal questions that combine message history with retrieval from external data sources.
• Automated software delivery

  Use Factory, a system of specialized AI agents, to take software development tasks from issue tracking to production deployment.

How to use Mastra?

1. Create project

   Run npm create mastra@latest <project-name> -- --llm <provider> in the terminal, selecting a provider such as "openai", "anthropic", "google", or "xai".
2. Start development server

   Enter the project directory and run npx bgproc start -n <project-name> -w -- npm run dev.
3. Open local interface

   Access Mastra Studio at http://localhost:4111 to build, test, and manage agents, workflows, and tools.

Mastra Pricing Information:

• Core framework

  Free to start with no seats or usage tiers; open source under the Apache 2.0 license.
• Enterprise features

  Source-available under the Mastra Enterprise License; specific pricing is not stated.