Autonomous execution with human oversight only when needed

Run your company with an agentic C-Suite.

An agentic-first company operating layer that plans, executes, and coordinates work across your business.

The Genius Review reads your strategy and critiques it like seven legendary operators would. Free, no signup.

CEO — steps in only when needed
Agent21 Operating Layer
Nine C-suite agents coordinating your systems. Humans approve only when it matters.
HubSpot
Mixpanel
Jira
GitHub
GCP
QuickBooks
Mercury
Slack
campaign launched
insight triggers feature
spec to build
deployment complete
release confirmed
payment initiated
approval requested
CEO brief dispatched
growth insight routed
product signal to build
budget sync
chief of staff follow-up
Approval required

Nine executives. Hired on day one.

Around the clock, in lockstep, accountable to you. Each one owns a function the way a seasoned operator would.

Julie Chief of Staff
ON DUTY
Elon CTO
ON DUTY
Sarah CFO
ON DUTY
Harvey Legal & Risk
ON DUTY
Amir Sales
ON DUTY
Steve Growth & Marketing
ON DUTY
Arjun Product
ON DUTY
Radha HR
ON DUTY
Aiko Customer Success
ON DUTY

Trained three layers deep.

Every agent stacks the same three kinds of judgment — what the function demands, what your industry expects, and what great operators would do.

Function-trained

Each executive agent is trained in its role — finance, engineering, product, sales, HR, legal, marketing, and operations.

Industry-trained

Agents understand your industry workflows, metrics, constraints, and business model — not just generic tasks.

K-Brain trained

A Silicon Valley operating intelligence layer that encodes founder-grade judgment in building, scaling, and running venture-backed companies.

K-Brain — the judgment behind every decision.

K-Brain is trained by Karl Mehta from 30 years of building and scaling venture-backed companies in Silicon Valley — refined with patterns drawn from books, podcasts, and interactions with leading entrepreneurs and operators.

Karl Mehta
30+ years building & scaling companies in Silicon Valley
Ben Horowitz · Marc Andreessen · Chamath Palihapitiya · Reid Hoffman · Jensen Huang · Marc Benioff · Elon Musk · Peter Thiel · Satya Nadella · Sundar Pichai · Larry Page · Sergey Brin · Jeff Bezos · Bill Gates · Steve Jobs · Jack Dorsey · Brian Chesky · Dara Khosrowshahi · Sheryl Sandberg · Susan Wojcicki · Whitney Wolfe Herd · Daniel Ek · Tobias Lütke · Patrick Collison · John Collison

Your agents don't just run. They learn.

Every task makes them sharper. They remember what worked, write it down as a reusable playbook, and reach for it next time — the work compounds instead of starting from zero.

Shared memory

One company brain, not nine silos. Decisions, numbers, and context live in one place every agent reads and writes — and you can read it too.

Self-written playbooks

Finish a board update once and the agent saves how it did it. The next one is faster and better. No prompt engineering — it teaches itself from the work.

The network effect

When a playbook proves itself, the pattern — never your data — is offered to the whole network. Your agents arrive pre-trained on the best of thousands of teams.

Your company's data stays yours. Agents share facts only inside your company. The only thing that ever crosses to the network is an anonymized playbook — names, numbers, and identifiers stripped and verified — never your data. Built on the open Agent Skills standard (SKILL.md): import skills, export yours, no lock-in.

Drive 10x growth and efficiency across the company.

Marketing agents run campaigns and pull engagement signals, product and engineering agents convert demand into shipped features, finance and HR agents tighten execution, and the Chief of Staff keeps leadership aligned.

Growth engine
Marketing, product, sales, and engineering agents work as one coordinated loop to turn demand into shipped product and revenue.
Operational efficiency
Finance, HR, and legal-risk workflows run with tighter control, faster approvals, and less human overhead.
Built for every stage
Mid-size companies can operate with a fuller AI C-Suite even before the complete human C-Suite is in place.

Meet your C-Suite.

Nine agents, working around the clock from day one — with you making the calls that matter.