**💻📰 Show HN: Mastra – Open-source JS agent framework, by the developers of Gatsby**

Mastra is a new open-source TypeScript framework created by the Gatsby team for rapidly building AI applications. It provides essential building blocks like workflows, agents, retrieval augmented generation (RAG), various integrations, and evaluation tools. The framework is designed to be opinionated, streamlining development. Deployment options include local machines and serverless cloud environments.

Users can leverage Mastra with several large language model (LLM) providers, such as OpenAI and Anthropic, though obtaining API keys may require credit card information depending on the provider. A command-line interface (CLI) tool, `create-mastra`, simplifies project setup and initiation. The framework prioritizes user feedback in its ongoing development.

[Read More](https://github.com/mastra-ai/mastra)

💬 [HN Comments](https://news.ycombinator.com/item?id=43103073) (115)