Introducing Dex: the self-driving workspace for operators. Dex is the first agent system with full operational context and a self-updating knowledge base. Every datapoint from your workspace is ingested, synced, and structured into compounding context for agents to take action. Comment "DEX" or tag ThirdLayer access. First 1,000 sign-ups... get 7 days free. After, join our rolling waitlist. Sign up at joindex [dot] com for a fun surprise. How dex works (threads)show more

Here’s how it works: 1. Operational context graph: Every email, Slack message, meeting, task structured into entities, relationships, timelines, and dependencies. A live source of truth for agents can reason over, not just retrieve from. 2. Personal knowledge base: Your processes, notes, judgment captured and updated proactively. Agents already know what matters to you, and what to do next. 3. Self-improving loop: Every correction makes your operational context more precise. The more you use it, the sharper it gets.

Dex started browser-first because that's where your context already lives. Now, we’ve expanded to Slack, iMessage, with desktop coming soon. One brain. One context. Every surface.

Background dreamer agents maintain your intelligence 24/7 - finding patterns, updating your knowledge base while you sleep. Skill builder agents discover and suggest helpful automations and skills.

Next week: Dex MCP + SDK 👀 Your operational context travels with you. Use Dex with Cursor, Claude, Lovable, anything. The foundation for personal agentic software is here. You build the interfaces, we maintain the context intelligence that makes them work.

Spots are currently limited. We'll be rolling users off so we can ensure a hands-on onboarding experience. Tag @dexbythirdlayer or comment DEX. Sign up at joindex[dot]com

@jia_seed Amazing! @dexbythirdlayer

@jia_seed @dexbythirdlayer thanks :)

DEX

sign up ;)

Go DEX!

make sure to sign up at

Dex 🙌🏻 @dexbythirdlayer

@dexbythirdlayer join our early access cohort at joindex . com!! letting more off soon

nicee i am also making something like this

the context system we've all been waiting for

context engine brr

LFG!! This is clean and let’s go dex!!

thanks jia!!

DEX

Dmed you!!

Dex on top!

sounds like desktop hmM MMm

DEX

lets goo

DEX

ty franco! make sure to sign up at joindex. com i will give your email access through there!

done - [email protected]

@richzou Dex @dexbythirdlayer

@richzou @dexbythirdlayer make sure to sign up at ill make sure to let you off shortly!

DEX

grab a spot at

Reminds me of what Karpathy was talking about just the other day, super cool!

yupp we have that piece + operational context (more structured and scalable, what people use in enterprise)

@dexbythirdlayer get me out of h*ll

DEX

go to and make sure youre on there

Ws

NiceWork!

thank you!!

@kevingu DEX

@kevingu sign up here :) i'll let you off the waitlist

dex deeeeex

download here!!

DEX

thanks arsh!! if you'd like prioritized access please grab a spot at joindex :)

Swear I've heard of another company called dex..

indeed there are two

lets gooo

Thanks nick!!

Dex

grab an account at joindex - will reach out to onboard!

DEX

Cool!

DEX

DEX

make sure to grab a spot at joindex . com will reach out!

Yippeeee!!

DEX @dexbythirdlayer

@dexbythirdlayer thx lucas!!

Dex

grab a spot on the site! will prioritize accordingly

lfg!! this is so cool

thanks alisa!! grab an early access spot here

very cool

Let's go guys!!

Thanks ayush!!