Moritz Petersen

Design Engineer @WorkOS

[Moritz Petersen @moritzpetersen]

auth.md — the /sign-up for agents 🤖

[Michael Grinich @grinich]

Today WorkOS is launching auth.md

An open protocol for agents to register for services on the web.

We're partnering with @Cloudflare and @Firecrawl as some of the first providers.

Why did we build this? And why now? 🧵

[Michael Grinich @grinich]

At WorkOS, AI lets designers prototype in production, explore permission graphs parametrically, close real UI nits in code, and design for the next user of software: agents.

Designers used to ship screens. Now they ship systems. https://t.co/OMODI50YoW

[Moritz Petersen @moritzpetersen]

@stephenmruiz @thomaspaulmann @peduarte @raycast FOMO hits hard

[Michael Grinich @grinich]

For the past several months, our engineering team has been building a new agentic coding system designed around a simple idea: the self-driving codebase.

These aren't just agents to write code on demand. They detect triggers, spin up secure sandboxes, gather dynamic context, open PRs, verify their work, unblock the next task, and learn from every failure.

We think the future of software engineering may look more like swarms of event-driven agents, running continuously, with humans setting direction and reviewing the work.

Ramp built Inspect. Stripe built Minions. Spotify built Honk.

We call ours Horizon. 🌅

Read more about what we learned and where it's going next:

[Michael Grinich @grinich]

The UI era is ending. 🪦

For 70 years we designed computer interfaces. Mainframe, CLI, GUI, Touch.

But with AI, the interface is disappearing. What will come next?

My talk from @mastra's conf this week:

[Moritz Petersen @moritzpetersen]

@pmarsceill @NotionHQ Congrats!!

[Moritz Petersen @moritzpetersen]

Tune in next week.
We’ve got some new tracks dropping 💿

[Michael Grinich @grinich]

next week...

is LAUNCH WEEK 💿🕺🤘

https://t.co/R55enQJA1v

[Moritz Petersen @moritzpetersen]

So proud of this team! And we‘re just getting started 🚀

[Michael Grinich @grinich]

https://t.co/KrBfyVdFHZ

[Moritz Petersen @moritzpetersen]

@BerinHoly @WorkOS Beautiful, as always 💙

[Moritz Petersen @moritzpetersen]

@jasonyuan Yep, we're hiring @WorkOS!
Would love an intro if stuff like this is their jam 👇

[Moritz Petersen @moritzpetersen]

@_atilla1 So good 👏

[Moritz Petersen @moritzpetersen]

@luisgurico @vercel Beautiful work!

[Moritz Petersen @moritzpetersen]

@zenorocha Congrats! 🖤

[Moritz Petersen @moritzpetersen]

@jakubkrehel @interfere_ Congrats!

[Moritz Petersen @moritzpetersen]

Go check it out: https://t.co/vY2J78byGX

[Moritz Petersen @moritzpetersen]

Had a ton of fun building our new merch store.
Headless Shopify + Next.js, full of little details.

[Moritz Petersen @moritzpetersen]

Bonus: Get our limited-edition holiday socks for free when ordering via MCP. 🎁🎄

[Berin Holy @BerinHoly]

I’m once again honored to take on the task of creating the branding system for the MCP Holiday Special conference by @WorkOS . I happily accepted this challenge and genuinely enjoyed every phase of it! Together with the design team, we achieved an incredible result in such a short time, so a special shoutout to Kristopher, Mitch, Rese, Randi, and, of course, our web wizard, Moritz. It was such a pleasure working with you all on this project and ending the year in style!

[Moritz Petersen @moritzpetersen]

@grinich @spenserskates Wow how cool, I‘ll be back just for this 🥁