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Mastra

Mastra (ex-Gatsby team, YC)

Most complete TypeScript agent framework. Built by the Gatsby team, YC-backed. Features workflows, RAG, memory, evaluations, and a visual playground. 22K stars.

Most complete TS agent framework — workflows, RAG, memory, evals, playground

Framework Open Source Free Free Apache-2.0
Visit Website Source Code 22.0k Documentation Back to Agents
Tech Stack
TypeScript
GitHub Stars
22.0k
Pricing
Free
Initial Release
September 1, 2024

Features & Capabilities

Open Source
Self-Hostable
MCP Support
Multi-Model
Multi-Agent
Voice Support
Free Tier

Capabilities

orchestrationmulti_agenttool_callingmemoryragworkflowsevaluationsplayground

Supported Model Providers

anthropic
openai
google
local

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Details

Developer
Mastra (ex-Gatsby team, YC)
Category
Framework
Status
Active
Initial Release
September 1, 2024
License
Apache-2.0
Tech Stack
TypeScript
Install
npm install mastra
Agent ID
mastra

Platforms

linuxmacoswindows

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Last updated: March 14, 2026