Changelog

Release notes and what changed across Mastra.

53 posts

Mar 23, 2026Blog

Mastra Changelog 2026-03-23

Token-aware model routing for observational memory, MongoDB-backed versioned datasets and experiments, Okta SSO auth with RBAC, workflow upgrades, tool suspension handling, and observability improvements.

Mar 17, 2026Blog

Mastra Changelog 2026-03-17

AI Gateway tool support in the agentic loop, more reliable observational memory, MCP client diagnostics and per-server control, and improved tracing with spanId, working memory and schema fixes.

Mar 13, 2026Blog

Mastra Changelog 2026-03-13

Persistent agent workspace filesystem, observability pipeline upgrades, type-safe server route inference, lower token costs for long-running Observational Memory, and breaking changes to metrics, scores, and ObservabilityBus configuration

Mar 12, 2026Blog

Mastra Changelog 2026-03-12

Cloudflare Durable Objects storage adapter,improved observability for MCP tooling, more reliable agent loops and token budgeting, sandbox and workspace extensibility via provider-specific getters and string PIDs

Mar 11, 2026Blog

Mastra Changelog 2026-03-11

Dynamic model fallback arrays, Standard Schema normalization with Zod v4 compatibility, customizable request validation for server adapters, and end-to-end RequestContext support for tracing and datasets/experiments.

Mar 5, 2026Blog

Mastra Changelog 2026-03-05

Improve tool-call accuracy, MCP fetch hooks receive RequestContext, and reliability updates surface streaming errors, preserve history in stateless tool runs, and clean up orphaned vector embeddings.

Mar 4, 2026Blog

Mastra Changelog 2026-03-04

Token-aware workspace output, smarter truncation, LSP resolution, sandbox process control, end-to-end auth and RBAC, workflow path tracking, concurrent-safe snapshots, and harness.sendMessage() file support.

Feb 26, 2026Blog

Mastra Changelog 2026-02-26

Supervisor pattern for multi-agent coordination, metadata-only vector queries, more flexible runEvals options, LSP diagnostics after workspace edits, and a new Blaxel sandbox provider.

Feb 24, 2026Blog

Mastra Changelog 2026-02-24

Background process management in workspaces and sandboxes, runtime tool configuration via Workspace.setToolsConfig(), and observational memory reliability and introspection improvements.

Feb 23, 2026Blog

Mastra Changelog 2026-02-23

AST-based workspace edits, real-time streaming tool argument previews, built-in task tracking tools for Harness, and improved Observational Memory continuity

Feb 19, 2026Blog

Mastra Changelog 2026-02-19

A new reusable Harness orchestration layer for agent apps, versioned workspaces and skills, pluggable blob storage, security and discovery upgrades, plus improved tool I/O and streaming behavior, including better chunk handling.

Feb 13, 2026Blog

Mastra Changelog 2026-02-13

Datasets and experiments for evaluations, workspace and filesystem lifecycle improvements with safer introspection, and workflow foreach progress streaming.

Feb 11, 2026Blog

Mastra Changelog 2026-02-11

Observational memory async buffering (default-on) with new structured streaming events, workspace mounts with CompositeFilesystem for unified multi-provider file access.

Feb 11, 2026Blog

Mastra Changelog 2026-02-11

Observational memory async buffering (default-on) with new structured streaming events, workspace mounts with CompositeFilesystem for unified multi-provider file access.

Feb 4, 2026Blog

Mastra Changelog 2026-02-04

Observational Memory, skills.sh integrations, plus improved tracing and safer error handling.

Jan 30, 2026Blog

Mastra Changelog 2026-01-30

Unified Workspace API, observability and server adapters improvements.

Jan 20, 2026Blog

Mastra Changelog 2026-01-20

Server adapters, composite storage, processor system overhaul, AI SDK v6 support, thread cloning, and more.

Nov 20, 2025Blog

Mastra Changelog 2025-11-20

Generate endpoint fix for OpenAI streaming, AI SDK v5 fine-grained stream control, and more.

Nov 14, 2025Blog

Mastra Changelog 2025-11-14

Mastra v1 is now in beta, we published a new book, and shipped the Mastra UI Dojo.

Nov 1, 2025Blog

Mastra Changelog 2025-11-01

Agent Studio, 1.0 Release Preparation, and more.

Oct 23, 2025Blog

Mastra Changelog 2025-10-23

Workflow state management, unified streaming, AI tracing updates, and more..

Oct 3, 2025Blog

Mastra Changelog 2025-10-03

New model router and automatic model fallbacks.

Sep 25, 2025Blog

Mastra Changelog 2025-09-25

New streaming architecture, scoring improvements, and more.

Sep 18, 2025Blog

Mastra Changelog 2025-09-18

Resumable streams, structured output API change, bundling overhaul, and more.

Sep 8, 2025Blog

Mastra Changelog 2025-09-08

Zod v4 support with v3 compatibility and more.

Aug 21, 2025Blog

Mastra Changelog 2025-08-21

New streamVNext and generateVNext methods with AI SDK v5 support, output processors, and more.

Aug 14, 2025Blog

Mastra Changelog 2025-08-14

This week we've shipped a major RAG enhancement with semantic markdown chunking and updated our A2A implementation to spec v0.3.0.

Aug 8, 2025Blog

Mastra Changelog 2025-08-08

Introducing Scorer API, critical fixes for message handling and parallel workflows, plus improvements to memory filtering and type safety across the board. Plus, we're announcing our first ever conference: TypeScript AI

Jul 30, 2025Blog

Mastra Changelog 2025-07-30

Improvements to Agents, Memory, and more.

Jul 24, 2025Blog

Mastra Changelog 2025-07-24

Introducing Mastra Templates, MASTRA.BUILD hackathon, StreamVNext protocol, complete eval scores system, and major improvements across the board.

Jul 17, 2025Blog

Mastra Changelog 2025-07-17

New memory improvements, new CLI templates, reasoning display in playground, and major improvements across the board.

Jul 9, 2025Blog

Mastra Changelog 2025-07-09

Mastra is now Apache-2.0 licensed, Playground goes multi-modal, new memory and RAG features, and more.

Jul 3, 2025Blog

Mastra Changelog 2025-07-03

Agent Network (vNext), workflow cancellation, and custom memory model support highlight this week's Mastra updates.

Jun 27, 2025Blog

Mastra Changelog 2025-06-27

Mastra Cloud public beta, agent network chat, memory improvements, workflow updates, and a new Mastra 101 lesson.

Jun 20, 2025Blog

Mastra Changelog 2025-06-20

We added sleep methods to workflows, structured memory to agents, and a new Gladia STT provider.

Jun 13, 2025Blog

Mastra Changelog 2025-06-13

Cross-thread memory recall, universal schema support, and enhanced workflow observability.

Jun 6, 2025Blog

Mastra Changelog 2025-06-06

Mastra 101, Mastra Auth, and more

May 29, 2025Blog

Mastra Changelog 2025-05-29

MCP Server updates, streaming support, and more.

May 15, 2025Blog

Mastra Changelog 2025-05-15

Mastra's latest updates: A2A support, MCP updates, and more.

May 7, 2025Blog

Mastra Changelog 2025-05-07

Mastra's latest updates: vNext is live, AGUI integration, and linting.

May 1, 2025Blog

Mastra Changelog 2025-05-01

Mastra's latest updates: vNext workflows, MongoDB vectorDB provider, Streamable HTTP MCP transport, and more.

Apr 24, 2025Blog

Mastra Changelog 2025-04-24

Mastra's latest updates: dynamic agents, MCPServer support, vNext workflows, and more.

Apr 16, 2025Blog

Mastra Changelog 2025-04-16

Mastra's latest updates: MCP registry registry, model settings in Playground UI, and new Memory docs

Apr 2, 2025Blog

Mastra Changelog 2025-04-02

Mastra's Latest Updates: API routing, memory processors, and more

Mar 27, 2025Blog

Mastra Changelog 2025-03-27

Mastra's Latest Updates: Nested Workflows, Voice to Voice, and more

Mar 20, 2025Blog

Mastra Changelog 2025-03-20

Mastra MCP documentation server, AgentNetwork updates, and more

Mar 14, 2025Blog

Mastra Changelog 2025-03-14

Major workflow enhancements, new Mastra Voice features, and more

Mar 4, 2025Blog

Mastra Changelog 2025-03-04

Introducing Mastra Cloud and Mastra Voice (as well as a few other things)

Feb 11, 2025Blog

Mastra Changelog 2025-02-10

Major updates including AI SDK integration, optimized bundle size through subpath imports, and enhanced storage layer with tracing capabilities

Jan 31, 2025Blog

Mastra Changelog 2025-01-31

New Memory API, speech providers, vector store integrations, and core improvements

Jan 24, 2025Blog

Mastra Changelog 2025-01-24

New `mastra build` command, evals in dev playground, new model support, and an abstracted deployer package

Jan 17, 2025Blog

Mastra Changelog 2025-01-17

Mastra's changelog for Jan 10th, 2025 through Jan 17th, 2025

Jan 10, 2025Blog

Mastra Changelog 2025-01-10

Mastra's changelog for Dec 27th 2024 through Jan 10th, 2025

Ship better agents

Create a new Mastra project. Mastra is a framework for AI applications and agents on a modern TypeScript stack. Before running the command, ask these questions one at a time and wait for each answer unless it was already provided:

Project name? (default: "my-mastra-app")
Provider? (required; options: "openai", "anthropic", "google", "xai")
If the provider isn't supported, ask again and list the supported values.

Run: `npm create mastra@latest <project-name> -- --llm <provider>`

The command creates a default Mastra project, installs Mastra skills for detected coding assistants, and initializes Git when appropriate.

After creation, enter the project directory and start the dev server: `npx bgproc start -n <project-name> -w -- npm run dev`

Open Mastra Studio at `http://localhost:4111`. Studio is the interface for building, testing, and managing agents, workflows, and tools.

Also mention that the Mastra model router provides access to thousands of models: https://mastra.ai/models

Quickstart