Jack Dorsey's Buzz: The New Hermes Agent? artwork

Jack Dorsey's Buzz: The New Hermes Agent?

The Startup Ideas Podcast

July 28, 2026

I sit down with Vinny for a live tour of Buzz, an open source, agent-native chat app from Block built on an open protocol.
Speakers: Greg Isenberg, Vinny
**Greg Isenberg** (0:00)
Jack Dorsey just launched Buzz, and it's gone completely viral. Yes, it's the same Jack Dorsey who co-founded Twitter, who co-founded Block. This guy is building what people are calling a Slack killer. Now, why does this matter for you? Well, it's being called a Slack killer because it's almost like this agentic version of Slack. It's a way to have conversations with your teammates except their agents. It's a way for you to huddle agents. It's a way for you to have software being built on the fly via agents. In this episode, we're going to break down it so clearly for you so that you understand what it is, why you should use it, and what are the best tips and tricks to use Buzz. My take on this whole thing is it's a glimpse into the future of work. I can't wait to see what you think about it.
By the end of the episode, you'll understand if it's for you, why you should use it, how you should use it. Enjoy the episode.
What's up Vinny, I saw your tweet. Jack Dorsey retweeted it. By the end of this episode, what are people going to learn?

**Vinny** (1:14)
They're going to learn how to use Buzz. Mostly, I think it's like the sweet spot for Buzz right now, is I think solopreneurs, small teams, they're going to learn how to use it to brainstorm, keep everything in context between their agents, and just build products, build solutions, ideate and use it to get stuff out there quicker and be more productive.

**Greg Isenberg** (1:44)
Cool.
What I hope to get from this is basically understand what Buzz is, understand why it matters, understand some best practices on how I can use it to actually use agents to do things for me. And by the end of this episode, I want to understand if I should actually use this thing. Or should I just basically continue using Slack? And that's what I hope to get out of this. Do you think you could commit to that? And also while you're going through it, just share the best practices that haven't been shared anywhere so that we've got a little edge on people. Do you think you can do that?

**Vinny** (2:23)
Yeah, I think so.
I just want to start off by saying, I think the Slack killer... Yeah, that's a good line, that it's a Slack killer. But I think the real selling point for me with Buzz from the beginning is just the openness of it. So do we want to start there? Just what I mean by open and what that allows, how powerful the openness feature of Buzz is?

**Greg Isenberg** (2:52)
Yeah, I mean, sell me on Buzz, like why?

**Vinny** (2:55)
Okay.
So first off, is Slack with agents inside and a lot of people... It's kind of like Slack. You got agents inside, so Slack allows you to do that by adding an integration. But in Buzz, they're like first-class citizens, right? So they're members of your team. You don't think of them as like add-ons or just kind of a side feature. They're an integral part of the app. They are part of your team. Think about it that way. So I like to keep things simple. And I just started using this not too long ago. I mean, it's only been out for a little while. I just discovered it. And these are basically what you see here are the default agents you get when you start. But under the surface, there's a really powerful thing, which is you can edit and add agents and when you give agent instructions, that's just basically like a system prompt. The really cool thing underneath is the harness. So we're all probably using Codex, Claude Code, maybe something like OpenCode to do our coding work, build products, whatever, be more productive. The great thing here is that your agent harness is swappable under any agent. So I can go under here and say I want to use Claude Code, I want to use Codex, I want to use Goose, and for me already that point there was like, okay, this is very cool.
The reason why this is so cool is because, I mean, if any of you, all your listeners probably follow this stuff, AI moves at breakneck pace. So today it's this model, the next day it's the other model, and sometimes, I don't know about you, but personally, I'm like, I get model fatigue where I'm just like, gosh, you know, I just switched over to this. I just got used to this model. Like, I don't even want to hear the good things about model X, because I'm still over here using model Y.

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