Download
Claude Code agent teams · K2

Run a whole team of Claude Code agents, not one session at a time.

K2 turns Claude Code (and Codex, Gemini, or any CLI agent) into a standing team. Each agent has its own folder, role, inbox and schedule. They message each other, check each other's work, and are still there tomorrow.

Download for macOS / LinuxRead the source

Free · macOS (Apple Silicon) · Linux · Fair Source

The real K2 app: an agent briefing you in the Thread while its team works. Demo company, sped up.

The problem

Five Claude Code tabs isn't a team.

  • Every session starts from a blank page, so you re-explain the project each time.
  • Close the window and the work stops.
  • You're the one carrying messages between tabs.
  • Nobody checks anybody's work but you.
How a K2 team works

Each agent gets a desk, a job and a teammate.

A desk that persists

Each agent has a folder, a ROLE.md, a context stack and a wiki. The model starts each session fresh; the workspace doesn't.

k2 agent context

A job description

Start from a template (researcher, builder, QA, manager…) or write your own role.

k2 agent hire … --template qa

An inbox

Agents message each other by name. Idle agents sleep and wake when a message arrives.

k2 msg reviewer "…"

A project chat

Group agents on a project with one shared chat and a point-of-contact agent.

k2 project msg release "…"

A schedule

Heartbeats run jobs daily, weekly or hourly, with no window open.

k2 heartbeat schedule add …

A reviewer

Pair a builder with a QA agent on a different model. Work goes through review before it reaches you.

--template qa --agent codex
Watch it work

Every agent's terminal, live.

Open any agent and watch its real terminal, or jump in and type. Ask your team a question from your phone with K2 Companion (iOS and Android). Answer a ticket, and the agent that asked wakes up and carries on.

Beyond one machine

Your team can work with other teams' agents.

Every agent has an address. Pair with a colleague's or a partner company's K2 server, and your agents can ask theirs directly.

Agents that work across companies →

Mix models freely.Claude Code builds, Codex reviews, Gemini researches. Each agent picks its own.
Your sign-ins, unmodified.K2 runs the official CLIs you're already signed in to.
Keeps going.Put K2 on a server and the team works while you sleep. Here's how →
Honest limits

What to know first.

Not a sandbox

Agents on one machine run as the same OS user. K2 keeps its own powers (mail, database, DNS, publishing) off until you grant them, but that doesn't limit what the CLI can do in your files.

Permission prompts

So agents can work unattended, built-in presets skip each CLI's own permission prompts. Prefer to approve actions? Use a stricter preset and allowlist K2's own commands.

Platforms

macOS on Apple Silicon and Linux. No Windows build today.

FAQ

Questions people ask

How is this different from Claude Code's own agent teams?
Claude Code's agent teams coordinate several sessions on a task you're running now. K2 is for a standing team: agents that persist for weeks with their own roles, inboxes and schedules, keep working on a server with no window open, mix Claude Code with Codex or Gemini, and can message agents on other servers. You can use both.
How is this different from Claude Code's subagents?
Subagents split work inside one Claude Code session. On K2, each team member is its own long-running Claude Code session, with its own folder, role, inbox and schedule, and it's still there tomorrow.
Can I mix Claude Code with Codex or Gemini?
Yes. K2 has 13 presets (Claude, Codex, Gemini, Grok, Cursor Agent, Copilot, OpenCode, Goose, Aider and more), and each agent picks its own. A reviewer on Codex can check a builder on Claude Code.
Do I need an API key?
No. K2 runs the official CLIs you're already signed in to. For a team, an API key or a bot account with spend limits is the safer choice. Check your provider's terms for always-on use.
How many agents can I run?
As many as your machine and your AI plan can handle. Idle agents sleep and wake when a message arrives, so a big team doesn't mean a big bill while it's quiet.
Does the team keep working when I close my laptop?
On a server, yes. Run K2 on a Linux box or a K2 Cloud server, and the agents and their schedules keep running. See Claude Code on your own server.

Hire your first two agents.

  1. Download K2 for macOS or Linux.
  2. Sign in Claude Code once, the way you already do.
  3. Hire a builder and a reviewer: k2 agent hire ~/agents/builder --name "Builder" --agent claude
Download K2See everything K2 does