Reflex: Fastest GPU Cloud for Robot Inference

Install the Reflex CLI, learn the global flags, and find the right command group.

The reflex CLI is shipped as part of the Python SDK package. Use it to authenticate, manage datasets and training runs, deploy models, and drive robots from your terminal or from CI.

Install

pip install reflex-sdk
# or, to install into an isolated environment:
pipx install reflex-sdk

To use the WebRTC connect path you also need the optional webrtc extras:

pip install "reflex-sdk[webrtc]"

Verify the install:

reflex --help

Python 3.9 or newer is required.

Global flags

Every command supports:

Flag	Purpose
`--help`, `-h`	Print help for the command or subcommand.
`--json`	Emit a structured JSON response instead of human-readable.

--json is the recommended output mode for scripts. Successful responses are shaped as {"ok": true, ...}; errors are {"ok": false, "error": "..."}.

Authentication flags

Commands that hit the Reflex API also accept:

Flag	Purpose
`--api-key`	API key. Overrides `REFLEX_API_KEY` and the credentials file.
`--convex-url`	Reflex backend URL. Defaults to production; only set if you've been told to.

See Authentication for the full key resolution order and environment variables.

Command groups

Group	What it does
`init`	Scaffold a project (agentic hardware wizard when logged in).
`signup` / `login` / `logout` / `whoami`	Create an account and manage local credentials.
`datasets`	Register and validate training datasets.
`training`	Start, watch, list, and stop training runs.
`artifacts`	Inspect trained model artifacts.
`deployments` / `deploy` / `doctor`	Create and validate deployments.
`sessions`	Manage session lifecycle and promote `dry_run` → `apply_actions`.
`robots`	Register robot schemas, register robots, mint pairing tokens.
`connect`	Drive a robot from your terminal with a YAML config.
`agent`	Run the resident device agent for dashboard-driven control.
`model`	Scaffold, test, and deploy your own Policy.

Exit codes

Code	Meaning
`0`	Success.
`1`	Any failure: validation, authentication, API error, or timeout.

When --json is set, the JSON payload tells you why; without it, the message is printed to stderr.

Getting help

Add --help to any command:

reflex training start --help
reflex connect --help

CLI overview