urun-cli 0.5.0

End-user CLI for deploying apps to urun

urun CLI

Deploy Python apps to urun from your terminal.

Install

uv tool install urun-cli
# or
pip install urun-cli

The package installs the urun command:

urun --version

For one-off uvx usage:

uvx --from urun-cli urun --version
# or the package-matching command alias
uvx urun-cli --version

Quick start

Today, an operator manually vends an org-scoped deploy API key. Save it locally with urun login:

urun login --api-key urun_<32hex>

urun login verifies the key with the urun API and stores credentials for later commands. The future browser-based login flow is not available in this CLI release.

For CI or one-off commands, you can still use the environment variable:

export URUN_API_KEY=urun_<32hex>

Create app.py:

import urun
from urun import App

app = App("hello-h100")


@app.function(gpus="h100:1")
def hello(ctx: urun.Context):
    print(f"running on {ctx.device}")
    return {"device": str(ctx.device)}

Run it:

urun run app.py

In this release, urun run uses the same deploy pipeline as urun deploy. deploy remains available as the lower-level command while the full deploy/run/monitor workflow is being built.

Inspect apps

List every app deployed in your org and its current status:

urun list apps

Sample output:

APP                    FUNCTION        COMPUTE  STATUS         RELEASE       DETAIL
causal-forcing-stream  generate_video  h100:1   ready          fa61f31b0961  0/1 GPU units in use
queued-app             warmup          a10:1    provisioning   000000000000  building

The STATUS column is one of provisioning, ready, pending, paused, or failed. It is derived from three backend signals reporting on sequential lifecycle phases:

Build (S3 status)	Promotion (app_deployments)	Capacity (function_ready)	STATUS
queued | building	(no row yet)	-	provisioning
failed	(no row yet)	-	failed
ready	active	false	pending
ready	active	true	ready
ready	paused	(irrelevant)	paused
ready	failed	(irrelevant)	failed

The DETAIL column carries the disambiguating signal (raw build state, error message, ready_reason, or in-use GPU counts). Pass --json for the raw payload.

This command is experimental and requires the server-side GET /apps endpoint, which is in development.

Inspect sessions

List live and historical sessions in your org. Newest sessions appear at the bottom of the table so the command works well with tail:

urun list sessions
urun list sessions | tail -20
urun list sessions --state failed
urun list sessions --limit 500

Sample output:

ID            APP                FUNCTION        SHAPE    STARTED               DURATION  STATE       DETAIL
2cc8a91f4b3d  helios             world_gen       h100:4   2026-06-02 10:55 UTC       44s  failed      no_capacity
3f0017daee01  helios             world_gen       h100:1   2026-06-02 11:08 UTC    18m43s  completed   client_disconnect
4a1c886e2d0a  causal-forcing-…   generate_video  h100:1   2026-06-02 14:21 UTC     3m12s  live        -

The STATE column maps the raw backend status to a user-friendly label:

Backend status	STATE
allocated	starting
connected	live
closed	completed
failed	failed
cancelled	cancelled

DURATION is computed from allocated_at to closed_at for terminal sessions, or allocated_at to now for live ones. DETAIL carries close_reason when present. Pass --json for the raw payload (full IDs, ISO timestamps, all fields).

Pass --limit to control how many rows are fetched (default 100).

This command is experimental and requires the server-side GET /sessions endpoint, which is in development.

Inspect active compute

List the compute slices your org currently has provisioned:

urun list compute

Sample output:

APP                    FUNCTION        SHAPE   INSTANCES  GPU UNITS  SESSIONS  AGE
causal-forcing-stream  generate_video  h100:1  1/2        1/2        1         12s
helios                 world_gen       h100:4  0/1        0/4        0         3m

Each row is one actively provisioned (app, function, compute_shape) slice. INSTANCES and GPU UNITS show <allocated>/<provisioned> — a row with 0/1 is an idle warm runtime with no active sessions on it. SESSIONS is the live session count. AGE is how stale the capacity snapshot is; very old ages may indicate the runtime is no longer reporting.

Slices with no provisioned capacity are omitted, so this command answers "what is running right now". For the full deployment catalogue (including paused / failed / unprovisioned apps) use urun list apps; for historical or in-flight sessions use urun list sessions.

Pass --limit to control how many rows are fetched (default 100).

This command is experimental and requires the server-side GET /compute endpoint, which is in development.

Manage apps

Manage the lifecycle of a single deployed app. The app is addressed by its slug (the name shown under APP in urun list apps); every operation is org-scoped via your API key.

Show detailed status for one app (the single-app complement to list apps):

urun app status lingbot

            App: lingbot
           Name: LingBot
    Environment: prod
     App status: active
     Deployment: active
Desired replicas: 2
       Function: handle_lingbot_runtime
        Compute: b200:4
            GPU: 4 x b200
        Release: 1c6d6287abcd
  Live sessions: 1

Scale an app's runtime replica count (the backend's scaling knob; the control plane turns it into the runtime StatefulSet replica count):

urun app scale lingbot --replicas 3
urun app scale lingbot --replicas 0   # drain to zero without retiring

GPU count and compute shape are fixed at deploy time per release (set via @app.function), so scale intentionally exposes only --replicas.

Retire an app so the control plane stops running it (drives the deployment to paused and the app to disabled, so the materializer stops recreating its runtime). This is the clean, reversible, API-driven alternative to a manual database edit:

urun app delete lingbot-handle      # prompts for confirmation
urun app delete lingbot-handle --yes  # or urun app rm lingbot-handle --yes

Reverse a retire and bring the app back online:

urun app activate lingbot-handle

All app subcommands accept --environment (default prod) and --json. These commands are experimental and require the server-side app lifecycle endpoint, which is in development.

What gets deployed

urun deploy creates a source manifest from your Python entrypoint:

Entrypoint	Included source
urun deploy app.py	app.py and local Python files it imports

Dependencies are declared in your urun app code. Project-level files such as pyproject.toml and requirements.txt are not uploaded as dependency declarations by the CLI.

Generated/cache content such as .git, dotfiles, __pycache__, and .pyc files is excluded. Add .urunignore to exclude additional paths.

Non-Python assets such as templates, static files, and data files are not auto-included yet.

Common options

Shared by run and deploy:

Option	Description
--name	Override the derived app name.
--api-url	Override the API URL; defaults to URUN_API_URL, saved login credentials, or https://api.urun.sh/v1.
--api-key	Deploy API key; defaults to URUN_API_KEY or saved login credentials.
--no-wait	Finalize but do not poll for readiness.
--poll-interval, --timeout	Control readiness polling.

Troubleshooting

Error	Fix
missing API key	Run urun login, set URUN_API_KEY, or pass --api-key.
invalid API key format	Use urun_<32 lowercase hex chars>.
entrypoint not found	Run from the project root or pass the entrypoint path.
path is outside the project root	Move the file under the project before deploying.
Expected files are missing	Import local Python files from app.py; non-Python assets are not auto-included yet.

Development

Contributing and test instructions are in CONTRIBUTING.md.

License

MIT.

Development environment

This repo has a Nix/direnv/devcontainer baseline:

direnv allow
just sync
just check

Use VS Code Dev Containers to open the repository with the same toolchain in a container. Copy devcontainer.env.example to .devcontainer.env if you need to pass local git identity or other non-secret development settings into the container.