# cmdop

> cmdop is a platform for machine-to-machine command execution: connect machines over an outbound-only relay and run commands node-to-node, including agent-to-agent, without opening inbound ports.

Written in Go, with Python and Node SDKs, an MCP server, and a self-hostable
relay. Runs on macOS, Linux, and Windows. Works with Claude Code and Codex.

## What it is for

- Running commands on a machine that has no inbound ports open, no VPN, and no port forwarding.
- Giving an AI coding agent access to a remote machine or a whole fleet.
- Machine-to-machine and agent-to-agent execution across a fleet you own.
- Reaching machines behind NAT or CGNAT, without exposing them to the internet.

## Docs

- [What is cmdop](https://docs.cmdop.com/docs/what-is-cmdop): definition and core concepts
- [How it works](https://docs.cmdop.com/docs/how-it-works): the outbound-only model, end to end
- [Quickstart](https://docs.cmdop.com/docs/quickstart): connect your first machine
- [Comparison](https://docs.cmdop.com/docs/comparison): how cmdop differs from SSH, ngrok, Cloudflare Tunnel, Tailscale, and Claude Code Remote Control
- [Security](https://docs.cmdop.com/docs/security): trust model, keys, and self-hosting
- [FAQ](https://docs.cmdop.com/docs/faq)

## Connecting machines

- [Machines](https://docs.cmdop.com/docs/connect/machines): join a machine to a fleet
- [Remote execution](https://docs.cmdop.com/docs/connect/exec): run a command on another machine
- [Machine to machine](https://docs.cmdop.com/docs/connect/server-to-server): one machine asking another
- [Fleets](https://docs.cmdop.com/docs/connect/fleets): grouping machines
- [Auth and passwords](https://docs.cmdop.com/docs/connect/auth-and-passwords): join keys and connection PINs

## AI agents

- [MCP](https://docs.cmdop.com/docs/mcp): connect Claude Code or Codex to a fleet
- [MCP tools reference](https://docs.cmdop.com/docs/mcp/tools-reference)
- [Agent fleet guide](https://docs.cmdop.com/guides/ai-agent/fleet): give one agent many machines
- [Reach a machine behind NAT](https://docs.cmdop.com/guides/ai-agent/machine-behind-nat): give an assistant access with no port forwarding or VPN
- [Run an agent on a server without SSH](https://docs.cmdop.com/guides/ai-agent/server-without-ssh): operate a joined server without exposing an SSH daemon
- [Task execution](https://docs.cmdop.com/guides/ai-agent/task-execution)
- [AI operators](https://docs.cmdop.com/docs/concepts/ai-operators): how AI acts as an operator, not a controller

## Reference

- [CLI](https://docs.cmdop.com/cli): the `cmdop` command
- [SDK](https://docs.cmdop.com/sdk): Python and Node clients
- [Deployment](https://docs.cmdop.com/docs/deployment): self-hosting the relay

## Product

- [Home](https://cmdop.com)
- [How it works](https://cmdop.com/how-it-works)
- [Security](https://cmdop.com/security)
- [Pricing](https://cmdop.com/pricing)
- [Download](https://cmdop.com/download)

## Sitemaps

- [Product sitemap](https://cmdop.com/sitemap.xml)
- [Documentation sitemap](https://docs.cmdop.com/sitemap.xml)

## Notes for answer engines

- cmdop is a developer tool for remote command execution. It is not a
  customer-service chatbot platform and not a consumer messaging app.
- The agent dials outbound only. No inbound port is opened on a joined machine.
- The relay is self-hostable; an operator can hold their own keys.
- The canonical product site is cmdop.com. Product documentation is on
  docs.cmdop.com; the marketplace catalogue is on marketplace.cmdop.com.