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The Javascript framework for building AI agents, from the Gatsby devs
Mastra is the easiest way to build a production AI application, built by the team that brought you Gatsby. We provide a complete set of AI primitives: workflows for complex operations, agents for autonomous decisions, RAG for knowledge integration, and evals for quality & accuracy. Mastra is open-source, modular, and built in Typescript for product developers. You can deploy Mastra on any cloud, and it gives you a straightforward syntax to solve the hardest problems building with AI: human-in-the-loop workflows, agent memory and tool selection, and output quality.
Mastra is an open-source TypeScript/JavaScript framework for building, testing, and deploying AI-powered agents and applications. It emphasizes integration with frontend and backend frameworks, observability, memory, and deployment in a TS-first environment.
Mastra provides a TS-first agentic framework with components for agents, workflows, memory, workspaces, and an observability platform. It supports building agents that integrate with React, Next.js, and Node, can be deployed as standalone servers or embedded within apps, and exposes APIs or endpoints. The platform includes an agent builder, templates, templates, tutorials, and an observability layer for traces, logs, metrics, and evaluation, plus deployment tooling to expose agents as APIs and manage code/infrastructure.
Who it’s for: Developers and engineering teams building AI-powered applications and agents in TypeScript/JavaScript, who want to integrate agents into React/Next.js/Node apps or deploy standalone services.
Community-driven with open-source model, extensive docs, tutorials, workshops, and a naming of multiple components; mentions of workshops, courses, and updates imply ongoing activity and traction.
Founder/CEO of Mastra. Spent last ~8yrs as cofounder of Gatsby.js, an open-source React website framework, scaled to $5M ARR, sold to Netlify. Eng <20 at Zenefits (W13) and Plangrid (W12). Spent two years knocking doors. Stanford '11.
Founder/CTO of Mastra. Principal eng & lead of >100 person eng org at Netlify. Built Gatsby Cloud infra that ran 10s of thousands of build nodes, served billions of files, and 100s of TB of monthly bandwidth.
Founder/CPO of Mastra. Prev: built Audiofeed (AI podcasting). Staff eng / head of product @ Gatsby. 15+ years in open source. State wrestling champion.
If you hate Langchain, you'll love Mastra :)
Mastra is an open-source JavaScript SDK for building agents on top of Vercel’s AI SDK, enabling workflow graphs, RAG pipelines, multi-agent orchestration, and local testing. It targets developers building AI-powered workflows and claims use in automating support, data extraction, transcription, and code generation, with deployment to serverless platforms.
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