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Sam Bhagwat

@calcsam • 15,622 subscribers

building @mastra. author principles of building ai agents, the "most popular book in SF right now". prev cofounder @gatsbyjs

Shorts

Incredibly excited today to launch file-based agents in Mastra! Add `instructions` as a .md file, a .ts file to `tools/` and the filename becomes the tool name, subagents in `subagents/`:

Incredibly excited today to launch file-based agents in Mastra! Add `instructions` as a .md file, a .ts file to `tools/` and the filename becomes the tool name, subagents in `subagents/`:

35,648 Aufrufe

Starting today, Mastra agents and workflows can publish and subscribe through a built-in event system. Listen for events like workflow step finish, pause, or completion. Subscribe external systems to Mastra events, or vice versa.

Starting today, Mastra agents and workflows can publish and subscribe through a built-in event system. Listen for events like workflow step finish, pause, or completion. Subscribe external systems to Mastra events, or vice versa.

11,784 Aufrufe

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We’re excited to announce today that Mastra has raised a $22M Series A led by Spark Capital. This brings our total capital raised to $35M:

We’re excited to announce today that Mastra has raised a $22M Series A led by Spark Capital. This brings our total capital raised to $35M:

219,149 Aufrufe • vor 3 Monaten

We're launching Agent Builder, your internal agent platform: - Devs write tools, select models, build workflows - Non-dev teammates assemble into agents (or vibe code), chat, publish - Includes RBAC, ownership, and visibility controls - Under the hood everything's Mastra agents

We're launching Agent Builder, your internal agent platform: - Devs write tools, select models, build workflows - Non-dev teammates assemble into agents (or vibe code), chat, publish - Includes RBAC, ownership, and visibility controls - Under the hood everything's Mastra agents

111,434 Aufrufe • vor 1 Monat

Today we're launching Mastra `Harness` `Harness` gives you a `Session` with plan/build modes. It lets you manage thread lifecycle, spawn or fork subagents, approve tools per-call or session, ask user questions, queue/steer. With skills, sandbox, browser, heartbeat. channels:

Today we're launching Mastra `Harness` `Harness` gives you a `Session` with plan/build modes. It lets you manage thread lifecycle, spawn or fork subagents, approve tools per-call or session, ask user questions, queue/steer. With skills, sandbox, browser, heartbeat. channels:

58,000 Aufrufe • vor 1 Monat

We're excited to introduce Claude Code, Cursor, and Codex agents in Mastra. Starting today, Mastra is now a meta-harness:

We're excited to introduce Claude Code, Cursor, and Codex agents in Mastra. Starting today, Mastra is now a meta-harness:

57,704 Aufrufe • vor 1 Monat

we raised a $13m seed round from 120+ of Silicon Valley’s top investors for , the leading TypeScript agent framework

we raised a $13m seed round from 120+ of Silicon Valley’s top investors for , the leading TypeScript agent framework

354,448 Aufrufe • vor 9 Monaten

We’re excited to ship Durable Agents in Mastra. Durable Agents don't just write to storage when an agent turn finishes; they persist the stream in real-time using a server cache. That lets them survive client disconnects, browser refreshes, or network blips:

We’re excited to ship Durable Agents in Mastra. Durable Agents don't just write to storage when an agent turn finishes; they persist the stream in real-time using a server cache. That lets them survive client disconnects, browser refreshes, or network blips:

26,190 Aufrufe • vor 23 Tagen

We just shipped Managed DBs in Mastra platform. Over the last couple months, a number of folks getting started asked us for off-the-shelf storage So we added support for Postgres (backed by Neon Postgres) and LibSQL/Turso.

We just shipped Managed DBs in Mastra platform. Over the last couple months, a number of folks getting started asked us for off-the-shelf storage So we added support for Postgres (backed by Neon Postgres) and LibSQL/Turso.

27,531 Aufrufe • vor 1 Monat

Starting today, agents can use Mastra Studio, not just humans We shipped CLI Actions so your Claude Code, Codex, or Cursor agent can run Mastra agents/workflows, search memory, query traces, and turn failures into datasets:

Starting today, agents can use Mastra Studio, not just humans We shipped CLI Actions so your Claude Code, Codex, or Cursor agent can run Mastra agents/workflows, search memory, query traces, and turn failures into datasets:

12,672 Aufrufe • vor 27 Tagen

Your Mastra agent now has an inbox. Connect external sources like GitHub or Slack, subscribe to emitted events, wake up your agent with `urgent` priority events:

Your Mastra agent now has an inbox. Connect external sources like GitHub or Slack, subscribe to emitted events, wake up your agent with `urgent` priority events:

11,534 Aufrufe • vor 25 Tagen

We just shipped task lists for Mastra agents. Now the agent can break work into structured steps they can check off one by one, with tools for marking items as `in_progress` or `completed` .

We just shipped task lists for Mastra agents. Now the agent can break work into structured steps they can check off one by one, with tools for marking items as `in_progress` or `completed` .

11,410 Aufrufe • vor 26 Tagen

We’re excited today to announce Mastra’s Agent Studio: an interactive interface for building and testing your Mastra agents. Now, engineers and product folks can collaborate in the same environment together:

We’re excited today to announce Mastra’s Agent Studio: an interactive interface for building and testing your Mastra agents. Now, engineers and product folks can collaborate in the same environment together:

22,150 Aufrufe • vor 8 Monaten

time for the typescript ai community to plant its flag we’re coming together in-person for one day, in SF: joined by friends like swyx 🇸🇬 , alana goyal, Marc Klingen, Paul Klein IV, David Cramer, and more

time for the typescript ai community to plant its flag we’re coming together in-person for one day, in SF: joined by friends like swyx 🇸🇬 , alana goyal, Marc Klingen, Paul Klein IV, David Cramer, and more

12,097 Aufrufe • vor 10 Monaten

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