# Mastra

> A TypeScript framework for AI applications and agents, with model routing, workflows, RAG and evals.

## Facts
- **Category:** [Agent Frameworks](https://agentsearchengine.app/category/agent-frameworks)
- **Type:** Framework
- **Pricing:** Open source
- **GitHub stars:** 28,277
- **Language:** TypeScript
- **License:** Apache-2.0
- **Last repo activity:** today (Sep 23, 2026)
- **Official site:** https://mastra.ai
- **Source code:** https://github.com/mastra-ai/mastra
- **Listing on Agent Search Engine:** https://agentsearchengine.app/agents/mastra
- **Data verified:** September 2026

## Best for
TypeScript teams building production agents without switching to Python.

## Avoid if
You need its enterprise features in production without a commercial licence; code under ee directories requires one.

## About Mastra
Mastra is a TypeScript framework for AI applications and agents that runs inside React, Next.js and Node projects or as a standalone server. It routes to more than 40 model providers through one interface and covers autonomous agents, graph-based workflows, memory, RAG, MCP and evals, from prototype to production. Most of the code is Apache-2.0; directories marked ee are source-available under an enterprise licence.

## Install

```
npm create mastra@latest
```

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Source: [Agent Search Engine](https://agentsearchengine.app) — an independent, hand-curated index of AI agents, MCP servers, and frameworks. Rankings are never sold; sponsored placements are labeled and never numbered. Full directory: https://agentsearchengine.app/llms-full.txt