Top all-time · #3700
Mastra
Company blog · mastra.ai/blog · on HN as calcsamaiprogramming
Mastra is the company blog at mastra.ai, writing about ai and programming. Since 2024, 21 different Hacker News readers have linked it 38 times, most often “Mastra: The TypeScript AI Framework”. No feed was found, so read it on the site itself.
Too few sampled comments (15) to say how often HN recommends it.?
Why HN links it
HN readers mention Mastra as an open-source TypeScript framework for building AI agents, often as a comparison point for other agent frameworks. Its free book is cited as a general overview of agent development.
Summarised by Claude from a sample of 15 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Ship AI agents that reason, remember, and act in TypeScript. Mastra provides memory, tools, MCP, and observability to go from prototype to production.
Most-linked posts?
- Mastra: The TypeScript AI Framework9 people · 9 mentions · first linked 2024-12-06
- Mastra is now Apache 2.0 licensed2 people · 3 mentions · first linked 2025-07-10
- The MCP Registry Registry2 people · 2 mentions · first linked 2025-04-10
- Achieving SOTA LongMemEval scores (80%) with RAG alone2 people · 2 mentions · first linked 2025-07-17
- Show HN: A “Course” as an MCP Server2 people · 2 mentions · first linked 2025-06-05
What Hacker News says?
This looks awesome! Quick question, are there plans to support SSE MCP servers? I see Stdio [0] are supported and I can always run a proxy but SSE would be awesome. [0] https://mastra.ai/docs/reference/tools/client
Comment linking /docs/reference/tools/client
on “Show HN: Mastra – Open-source JS agent framework, by the developers of Gatsby”Submitted Show HN: A “Course” as an MCP Server as a story · 213 points
HN discussioninteresting to contrast the recent memory releases - https://mastra.ai/docs/agents/01-agent-memory - https://blog.langchain.dev/langmem-sdk-launch/ - https://help.getzep.com/concepts#adding-memory not sure where all this is leading yet but glad people are exploring.
Comment linking /docs/agents/01-agent-memory
on “Show HN: Mastra – Open-source JS agent framework, by the developers of Gatsby”Submitted The MCP Registry Registry as a story · 7 points
HN discussionThe concepts are pretty similar but this course is definitely pretty Mastra specific. If you are looking for a more general overview on agent development, my co-founder wrote a short book (available free at https://mastra.ai/book )
Comment linking /book
on “Show HN: A “Course” as an MCP Server”Submitted Mastra is now Apache 2.0 licensed as a story · 4 points
HN discussionAgreed, regarding the other parts of the "LLM" stack, have a look at the, IMO best, LLM coordination / Observability platform TS library: https://mastra.ai/
Comment linking /
on “WASM Agents: AI agents running in the browser”Submitted Mastra: The TypeScript AI Framework as a story · 4 points
HN discussionLove to see more frameworks like this in the Typescript eco-system! How does this compare to Mastra: https://mastra.ai/
Comment linking /
on “Show HN: Pickaxe – A TypeScript library for building AI agents”Submitted Achieving SOTA LongMemEval scores (80%) with RAG alone as a story · 3 points
HN discussionThis looks super cool! Seems like a stronger statistics-based optimization strategy than https://docs.auto-rag.com/optimization/optimization.html . I've got a few questions: Could I ignore all flow runs that have an estimated cost above a certain threshold, so that the overall cost of optimization is less? Suppose I choose an acceptable level of accuracy and then skip some costlier exploration stuff. Is there a risk…
Comment linking /en/docs/evals/textual-evals
on “Designing Pareto-optimal RAG workflows with syftr”Submitted Mastra Cloud as a story · 3 points
HN discussionLocation: Kamloops, BC, CA Remote: Yes Willing to relocate: Within BC Technologies: JS/TypeScript, React, Next.js, Node.js, Express, SQL, Postgres, Mongodb, DynamoDB, AWS(SDKs mostly), Nginx, OpenAI api, Mastra ... Résumé/CV: https://drive.google.com/file/d/1K1ViD-2XndMoD4ZIz998KnUvEHZ... Email: zijin@ualberta.ca Hello there, I am a full-stack developer based in BC, Canada, with experience in tools like JavaScript/T…
Comment linking /docs/observability/tracing/exporters/datadog
on “Ask HN: Who wants to be hired? (February 2026)”Submitted Mastra 101 as a story · 3 points
HN discussionLocation: Kamloops, BC, CA Remote: Yes Willing to relocate: No Technologies: JS/TypeScript, React, Next.js, Node.js, Express, SQL, Postgres, Mongodb, DynamoDB, AWS(SDKs mostly), Nginx, OpenAI api, Mastra ... Résumé/CV: https://drive.google.com/file/d/1K1ViD-2XndMoD4ZIz998KnUvEHZ... Email: zijin@ualberta.ca Hello there, I am a full-stack developer based in BC, Canada, with experience in tools like JavaScript/TS, Reac…
Comment linking /docs/observability/integrations/exporters/datadog
on “Ask HN: Who wants to be hired? (June 2026)”Submitted How to Structure Projects for AI Agents and LLMs as a story · 2 points
HN discussionIs this an alternative to https://mastra.ai/docs How would it compare?
Comment linking /docs
on “Show HN: Gambit, an open-source agent harness for building reliable AI agents”Submitted The MCP Registry Registry as a story · 2 points
HN discussionHi. I'm on the Mastra team, and I've built out the observability stack. We support outputting traces to numerous 3rd party tools, and also our own system. More info can be found here: https://mastra.ai/docs/observability/tracing/overview#export... In the coming months we will add improvements to logging, overall metric collection, experimentation tracing, and numerous additional observability features. Thanks for yo…
Comment linking /docs/observability/tracing/overview
on “Show HN: Mastra 1.0, open-source JavaScript agent framework from the Gatsby devs”Submitted Mastra is now Apache 2.0 licensed as a story · 2 points
HN discussionWe've always supported letting folks specify their agent hierarchy, eg agent supervisor, workflow orchestrator, mix and match, etc. But people kept asking us for a multi-agent primitive out of the box so we shipped `agent.network()`, which is basically dynamic hierarchy decided at runtime, pass in an array of workflows and agents to the routing agent and let it decide what to do, how long to execute for, etc! https:…
Comment linking /docs/agents/networks
on “Show HN: Mastra 1.0, open-source JavaScript agent framework from the Gatsby devs”Submitted Why We're All-In on MCP as a story · 2 points
HN discussionLocation: Kamloops, BC, CA Remote: Yes Willing to relocate: No Technologies: JS/TypeScript, React, Next.js, Node.js, Express, SQL, Postgres, Mongodb, DynamoDB, AWS(SDKs mostly), Nginx, OpenAI api, Mastra ... Résumé/CV: https://drive.google.com/file/d/1K1ViD-2XndMoD4ZIz998KnUvEHZ... Email: zijin@ualberta.ca Hello there, I am a full-stack developer based in BC, Canada, with experience in tools like JavaScript/TS, Reac…
Comment linking /docs/observability/tracing/exporters/datadog
on “Ask HN: Who wants to be hired? (April 2026)”Submitted Mastra Agent Factory as a story · 1 points
HN discussionLoved the article because I exactly hit the stages all up till the 5th! Thank you for making me see the whole picture and journey! I think a problem to DSPy is that they don't know the concept of THE WHOLE PRODUCT: https://en.wikipedia.org/wiki/Whole_product Look at https://mastra.ai/ and https://www.copilotkit.ai/ to see how more inviting their pages look. A company is not selling only the product itself but all th…
Comment linking /
on “If Dspy is so great, why isn't anyone using it?”Submitted The TypeScript AI Framework – Mastra as a story · 1 points
HN discussionLocation: Kamloops, BC, CA Remote: Yes Willing to relocate: No Technologies: JS/TypeScript, React, Next.js, Node.js, Express, SQL, Postgres, Mongodb, DynamoDB, AWS(SDKs mostly), Nginx, OpenAI api, Mastra ... Résumé/CV: https://drive.google.com/file/d/1K1ViD-2XndMoD4ZIz998KnUvEHZ... Email: zijin@ualberta.ca Hello there, I am a full-stack developer based in BC, Canada, with experience in tools like JavaScript/TS, Reac…
Comment linking /docs/observability/tracing/exporters/datadog
on “Ask HN: Who wants to be hired? (May 2026)”Submitted Mastra as a story · 1 points
HN discussionWhy would I choose this over Mastra? [0] [0] https://mastra.ai/
Comment linking /
on “Flue is a TypeScript framework for building the next generation of agents”Submitted Announcing Mastra's Agent Studio as a story · 1 points
HN discussion
