Agents
What agents are, how they reason and act with tools, and how to build them in TypeScript.
27 posts
AI agent architecture: patterns, components, and production design
Learn AI agent architecture from components to orchestration patterns, memory, observability, and production design choices for building reliable agents.
Aug 9, 2026ArticleAgent builder: how to build, test, and deploy AI agents
Learn what an AI agent builder is, the core building blocks of an AI agent, and how to build, test, and deploy your first agent to production.
Aug 1, 2026ArticleAI hallucination: what it is, why it happens, and how to reduce it
Learn what an AI hallucination is, why language models produce false outputs, and practical techniques to detect and reduce hallucinations.
Jul 20, 2026ArticleHow to create a chatbot: a complete guide for developers
Learn how to create a chatbot with LLM APIs. Covers the request loop, prompt design, tool calling, RAG, deployment, and production observability.
Jul 15, 2026BlogIntroducing Goals for Mastra Agents
Durable objectives for long-running agents with LLM-judged evaluations.
Jul 3, 2026BlogIntroducing File-Based Agents for Mastra
Define your agents using folders and files.
Jun 23, 2026BlogIntroducing Task Lists for Mastra Agents
Keep your agents on track through long-running, complex work.
Jun 22, 2026ArticleAgent systems: architectures, patterns, and how to build for production
Learn how agent systems work, when to use single vs. multi-agent architectures, and how to build agent systems with context engineering and observability.
Jun 22, 2026ArticleAI agents: what they are, how they work, and how to build with them
Learn what AI agents are, how they reason and act with tools, the five classical types, and practical guidance for building, testing, and deploying your own.
Jun 22, 2026ArticleHow to build AI agents: a practical guide for developers
Learn how to build AI agents in TypeScript with practical patterns for tool design, guardrails, evals, and production-ready deployment.
May 28, 2026BlogAnnouncing Agent Builder
Your internal agent platform.
Apr 22, 2026BlogThe Agent Prototype Playbook
A 7-step playbook for scoping, building, and shipping AI agent prototypes.
Apr 8, 2026BlogIntroducing Agent Editor
Edit agent instructions, tools, and display conditions from Studio with draft/publish versioning, or programmatically through the editor API.
Mar 3, 2026BlogIntroducing Our New Course: Build Your First Agent in TypeScript
A new video course designed to get you from zero to deploying your first agent in under two hours.
Feb 16, 2026BlogHow to Structure Projects for AI Agents and LLMs
Learn how Mastra is optimized for modern AI systems, and how to implement a similar approach.
Jan 1, 2026BlogBuilding a docs manager
Build an AI documentation manager that creates, updates, and organizes Markdown files with a workspace filesystem.
Jan 1, 2026BlogBuilding an AI recruiter
Build a recruiter workflow in Mastra that gathers candidate information, branches on candidate profiles, and generates follow-up questions.
Nov 12, 2025BlogAnnouncing our second book: Patterns for Building AI Agents
We're excited to announce the release of our new book: Patterns for Building AI Agents. This book helps you take your agents from prototype to production.
Oct 30, 2025BlogIntroducing Mastra’s Agent Studio
We've renamed Playground to Studio and it's now shareable with your team.
Jun 4, 2025BlogIntroducing Mastra 101: The experimental course led by MCP, right in your IDE
The newest (and perhaps coolest) way to learn Mastra
Jun 2, 2025BlogAnnouncing the second edition of Principles of Building AI Agents
We're excited to announce the release of v2 of Principles of Building AI Agents.
May 8, 2025BlogFlashGenius: instantly generate flashcards on any topic
How we vibecoded Flash Genius, an instant flashcard generator, in 1 hour
Apr 22, 2025BlogDynamic Agents: Inserting Runtime Context in Mastra
Mastra's dynamic agents provide a powerful way to handle context in AI applications, without exposing sensitive information to the LLM or relying on globals.
Apr 20, 2025BlogAI with JavaScript in 2025
A dive into four leading open-source JS AI libraries: Vercel AI SDK for model routing, Mastra for agents and workflows, Langfuse for observability, and Stagehand for web automation.
Mar 12, 2025BlogAnnouncing our new book: Principles of Building AI agents
Mastra founder Sam Bhagwat is excited to announce the release of our new book: Principles of Building AI agents. This book is a guide for developers who want to rapidly build AI applications.
Feb 14, 2025BlogSolving the hardest problem in computer science with LLMs
How we use LLMs at Mastra to design clean, intuitive APIs by improving naming, structure, and developer workflow.
Nov 11, 2024BlogAI engineering, two years later
What's changed in AI engineering over the last two years: models, agents, knowledge, tracing, evals
