Verified project record

mastra-ai/mastra

Mastra is a TypeScript framework for AI engineers who need to build and scale agents, workflows, and context management in code. It requires connecting to external LLM providers and writing TypeScript, targeting teams moving from prototype to production.

Project overview

Project type: AI Agent · RAG · Workflow
Use cases: Automation
Deployment: Refer to project documentation
License: License pending

Best for

AI engineers and developers building production-ready AI applications using TypeScript.
Teams needing to orchestrate multi-step LLM workflows with integrated memory, tool usage, and human-in-the-loop approvals.

Key capabilities

Connect to over forty external providers through one standard interface using models from OpenAI, Anthropic, Gemini, and others.
Build autonomous agents that use LLMs and tools to solve open-ended tasks by reasoning about goals and iterating until emitting a final answer.
Orchestrate complex multi-step processes with syntax for control flow including .then(), .branch(), and .parallel().
Suspend an agent or workflow and await user input or approval before resuming using persistent storage.
Provide conversation history, retrieve data from sources, and add memory for coherent agent behavior.
Author Model Context Protocol servers exposing agents, tools, and other structured resources via the MCP interface.
Observe, measure, and refine continuously with built-in evaluations and observability tools.
A local UI at http://localhost:4111 to build, test, and manage agents, workflows, and tools.

Limitations and risks

Code located in directories named ee/ requires a valid enterprise license for production use.
The framework requires connecting to external model providers which may incur paid service costs.

Getting started

Create a new project using the standard npm create mastra@latest command for guided setup.

Evidence and sources

README: Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.
README: Purpose-built for TypeScript and designed around established AI patterns, Mastra gives you everything you need to build great AI applications out-of-the-box.
README: npm create mastra@latest
README: Start Mastra Studio at http://localhost:4111. Studio = UI for build, test, manage agents, workflows, tools.
GitHub project description: Mastra is the modern TypeScript framework for AI-powered applications and agents.

Reviewed at: 2026-07-17T10:34:46Z