Blob of organized mud that likes to eat tacos. Formerly engineering lead for media on here.
San Francisco
Joined April 2008
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Hey all, this is what I’ve been working on since leaving X last year. I’m really proud of what we’ve built (so far!). Check it out!
excited to share what I’ve been up to:
today, we’re launching @Macroscope: an AI system that uses your codebase to answer questions about what’s happening and automatically reviews your PRs for bugs. we raised a $30M Series A led by Lightspeed & Thrive Capital, Adverb and GV.
Mark Kalman retweeted
full case study link here macroscope.com/blog/case-stu…
Mark Kalman retweeted
I’m glad @strawgate's standards for coffee are lower than his standards for code review because many coffees were brewed by yours truly in the creation of this video. I was thrilled to sit down with Bill, who is the head of product at @pydantic, to hear about how he and the team use @Macroscope. It’s an absolute joy to work with Pydantic and to have a small part in supporting their work.
Mark Kalman retweeted
Today we are introducing Murmur, our cloud agent orchestration system.
Here's an early preview of Murmur:
Mark Kalman retweeted
Check Run Agents, now available in @Macroscope. we made a video to show you how it works!
these are super flexible agents you control that let you enforce your team's coding conventions, workflows, and compliance checks during code review. just define in markdown and include trigger rules, model choice/reasoning levels, and tool access (including any 3rd party integrations and MCP servers you've already connected to macroscope)-- then the agent spawns as a Check in GitHub.
we've been delighted by the creativity and complexity of what our customers have been doing with check run agents: enforcing style conventions, coordinating multistep db migration workflows, ensuring public-facing docs are updated in sync with code changes, and more.
Mark Kalman retweeted
Had a ton of fun talking with @_sonith on his pod. We covered a lot of ground!
My conversation with @kayvz, co-founder of Macroscope and Periscope.
We talk about selling for $120M pre-launch to @dickc at Twitter, turning down @elonmusk, getting trolled by Kobe Bryant and much more.
His family immigrated to the Bay Area from Iran and he grew up an aspiring filmmaker. With a push from his mom, however, he toured and eventually got admitted to Stanford.
This led to a series of software startups with his best friends and eventual acquisitions from Blackboard and Twitter. He led product there and eventually (graciously) turned down Elon to co-found Macroscope.
Kayvon is an incredible storyteller, family man, & product mind. And while his accomplishments are many, he's an even better person.
I hope you enjoy this as much as I did!
Timestamps:
00:00 Intro
1:54 Fleeing the Iranian Revolution to California
4:32 How Gaming Sparked a Career in Tech
8:28 Growing Up With 12 Kids
12:32 Pissing Off an Apple Exec with a Jailbroken iPhone 4:29 From a Cardboard Sign to Winning Emmys
19:20 Building Software While Skipping Class
20:53 Selling $100k Apps to Best Buy & HP
22:32 Getting Acquired Over a Spam Call
27:03 The Importance of Passion
34:21 The Origins of Periscope
39:20 Scott Belsky Invented "Teleportation"
43:20 Six Months of Failed Designs
47:33 Selling to Twitter Before Launching
54:07 Trolled by Kobe Bryant
57:41 Turning Down Elon Musk
01:01:54 Founding Macroscope
01:10:21 His Two Most Consequential Life Decisions
Mark Kalman retweeted
An incredible honor! Today, @particle_news is the App of the Day 🤩🤩
Mark Kalman retweeted
Here's my conversation with Joel Beasley on the @moderncto_io podcast. We discuss:
- What @Macroscope is & why we built it
- Why AI code review is already better than humans at finding bugs
- The Periscope story: 0 to 1M users in a week & getting acquired by Twitter
Plus, agent obsession mode, replacing Retool in 2 hours with Claude Code, why big companies need to be jolted, and leadership advice from Bret Taylor
0:00 Intro
0:18 What is Macroscope
3:53 From Periscope to Macroscope — the founding story
9:29 AI code review & building trust
13:48 When does human code review end?
18:43 Building apps with AI in hours
20:31 Agent obsession mode & OpenClaw
22:28 Replacing a year of Retool with a 2-hour Claude Code session
25:14 AI's impact on engineering teams & layoffs
29:10 Why big companies need to be jolted
33:03 The Periscope story — live streaming, hearts & Twitter
37:03 Integrating Periscope into Twitter & building Spaces
41:28 Best leadership advice
Mark Kalman retweeted
when we launched @Macroscope, our "Ask Macroscope Anything" feature was a chatbot that answered questions about your codebase.
6 months later: it now generates code, creates PRs, queries your production logs, and can automatically react to events across your entire stack. It’s not just a chatbot anymore.
so we're renaming it Agent, and it's getting a big upgrade today:
Mark Kalman retweeted
Ask Macroscope Anything (AMA) is now Macroscope Agent, and it got a big upgrade today:
→ 6 new integrations (Sentry, Amplitude, GCP Logging, GitHub API, image gen, and MCP)
→ Event-driven automations triggered by commits and PRs
→ Webhook delivery + an API
Mark Kalman retweeted
Today, we’re announcing that Macroscope is shifting to usage-based pricing. Coding agents are transforming coding output drastically, and seats are no longer representative of how much code we process and review. Across our customers in the last 3 months, each dev “seat” on avg produced:
→ 1.8x more commits
→ 1.9x more code reviews
→ 1.7x larger avg reviews
Mark Kalman retweeted
@Macroscope ranks #1 across localized and clear-cut issue types — local context, simple complexity, and obvious review difficulty.
codereview.withmartian.com/?…
Mark Kalman retweeted
Macroscope's review comments in @github include a copy/paste-able prompt for your favorite coding agent. See the issue > paste the prompt > fix it.
Mark Kalman retweeted
I've been using a few different code review bots for a while now and @Macroscope is easily the best one. Still catches things no matter how thorough I am before I push
Mark Kalman retweeted
We 🚢 a TON of new features this week ↓
→ Ask Macroscope to create PRs from Slack
→ Webhooks to invoke Macroscope from anywhere
→ Code Review validates your PRs against linked @Jira or @linear issues
→ New native integrations w/ BigQuery, @LaunchDarkly, and @PostHog
→ Code Review: "AI Prompt" for easy copy/pasting to your coding agent
...and more
Mark Kalman retweeted
One thing most developers on larger teams bemoan is the code review process. You look back at the early start up days longingly because of how much less red tape there was on shipping. It feels like with the rise of agents writing and reviewing code, there should also be a shift in approving code. 🧵
Mark Kalman retweeted
Both Anthropic and OpenAI dropped new models today. For some teams, that means hours/weeks/days of re-tuning prompts. For us, it means hitting "run." We wrote about why we stopped writing prompts: macroscope.com/blog/we-stopp…
