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CLI Now in public beta

Your terminal.
Their incident.

Install with npm. Paste a handoff token. You're SSH'd into a real broken server from your own iTerm, Warp, or whatever terminal you use daily. Your keybindings, your split panes, a real outage to debug.

Cross-platform · Native terminal workflow · Fast handoff
See Chaos Mode
Terminal - parium
Beta
$ parium open

  █▀█ ▄▀█ █▀█ █ █ █ █▀▄▀█
  █▀▀ █▀█ █▀▄ █ █▄█ █ ▀ █
  Chaos Terminal Client v0.1.0-alpha.7

Paste handoff token: ••••••••••••

 Token validated
 Session resolved - k8s-chaos-war-room
 Attaching to terminal...

──────────────────────────────────────
  SESSION  K8s Cascading Failure
  STATUS   ● LIVE
  PHASE    3 of 6 - DNS network policy
  IMPACT   $120K/hr
──────────────────────────────────────

candidate@prod-worker-07:~$ 
npm install One command to install globally
< 10 seconds From token paste to live terminal
3 themes Dark, light, and mono
WebSocket attach Real-time terminal over secure WS

Let engineers work the way they already do.

Senior engineers have workflows built over years. Shell aliases, split panes, muscle memory. The CLI lets them work in the environment they already know, so you're measuring debugging ability, not how well they adapt to an unfamiliar interface.

Browser terminal

  • Fast to launch from the browser with no install required
  • Consistent environment and setup across every candidate session
  • Best when you want the lowest-friction entry into the scenario

Parium CLI

  • Native terminal workflow with their usual keybindings and habits
  • Split panes, tabs, and local tools alongside the session
  • Best when realism matters and you want to see how they actually work

Three commands between your terminal and a live incident

The flow is deliberately minimal. Install once, launch with parium open, paste a token, debug.

01

Install the CLI

One npm command. Native terminal access on the operating systems your team already uses, with a lightweight Node runtime requirement.

02

Paste the handoff token

The browser lobby generates a secure token when a candidate or engineer is ready. Paste it into the CLI and the session resolves automatically.

03

You're in

WebSocket attaches to the live container. Same environment as the browser flow, delivered to your native shell.

Built for engineers who live in terminals

Lobby UI, reconnect logic, presence tracking. More than a wrapper.

Native Terminal Attach

WebSocket connection to real containers. Raw PTY I/O, so your terminal renders the output instead of a browser emulator. Resize and signal forwarding work as expected.

Secure Handoff Tokens

The browser lobby generates time-limited tokens. The CLI validates them server-side and resolves the correct session, scenario, and room automatically.

War Room Lobby

For Chaos Mode sessions, the CLI renders an interactive lobby with presence indicators, readiness gates, and hotkey controls. Press S to start, Tab to cycle themes.

Auto-Reconnect

Network drops happen. The CLI retries with exponential backoff (up to 5 attempts), re-validates the session, and picks up where you left off.

Theme Support

Dark, light, and mono themes. Auto-detects weak terminals (no Unicode, no color) and falls back to mono. Override with --theme or Tab in the lobby.

Browser Telemetry Alongside

Keep the browser dashboard open for telemetry and room context while you work in the terminal. Both stay in sync.

From install to incident in under a minute

The CLI preflight checks your terminal capabilities, pings the server, and reports latency before you even paste the token. When the session is ready, it attaches and your prompt appears.

$ npm install -g @parium.ai/cli@latest
  • Preflight: theme, terminal caps, server RTT
  • Version policy: warns when updates are available
  • JSON mode for CI/automation: --json
  • Clipboard auto-detect for handoff tokens
preflight
  PARIUM / preflight

   theme     dark
   terminal  iTerm2 · truecolor · 120×32
   server    https://parium.ai · 42ms

  PARIUM / session

   Token validated
   Room resolved - chaos-room-42
   Terminal attached

  ╭──────────────────────────────────────╮
    SESSION  Azure VM 503               
    STATUS   ● LIVE                    
    ROOM     Engineer A + Engineer B   
  ╰──────────────────────────────────────╯

root@edge-api-vm:~$ 

Common questions about the CLI

No. The CLI is another way to access the same incident environments. Candidates or engineers can choose between the browser terminal or the CLI. Both connect to the same live container running the same scenario.

When realism matters. Senior infrastructure candidates have years of terminal muscle memory. The CLI removes the browser abstraction so you see how they actually debug, in their own environment with their own tools. It's especially good for Chaos Mode war rooms where engineers want split-pane terminal control alongside browser telemetry.

The browser lobby generates a time-limited, single-use token when the engineer is ready. They copy it and paste it into the CLI. The CLI validates the token server-side and resolves the correct session: scenario, room, engineer role. The token auto-detects from clipboard if available.

Yes. The CLI attaches to the same containers as the browser flow. GPU failures, Kubernetes cascading failures, Azure networking, Docker security - they all work identically. The incident engine is the same regardless of how you connect.

The CLI retries automatically with exponential backoff, up to 5 attempts. It re-validates the session and reconnects to the container. The candidate's work is preserved, so they pick up where they left off.

Get Started

Give candidates the terminal they already trust

The CLI says you understand how infrastructure engineers actually work.

See Chaos Mode
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