ray-workbench

ray-workbench is a skill for Claude Code, Codex from nebius/nebius-physical-ai. It costs 38 tokens per session (737 once invoked), scanned A, original, Apache-2.0.

A routing guide for using Ray, a Python system for running distributed computing jobs, in Nebius Physical AI Workbench. It directs requests to supported paths for jobs, training, serving, or KubeRay, and identifies unsupported Ray features.

In plain words
What is it for?
Use it to choose a Ray development path, run supported GPU jobs, submit a guarded training or serving workload, or work with the documented KubeRay setup.
Why use it?
It avoids sending work through commands, services, or workflows that the environment does not actually support. It also distinguishes supported recipes from user-supplied applications.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to choose a Ray development path, run supported GPU jobs, submit a guarded training or serving workload, or work with the documented KubeRay setup.

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Install with agentmods
npx agentmods add skills/nebius/nebius-physical-ai/ray-workbench
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add nebius/nebius-physical-ai --skill ray-workbench
Clone the repo
git clone --depth 1 https://github.com/nebius/nebius-physical-ai

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ray-workbench

README.md
[![agentmods](https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/ray-workbench/github.svg)](https://agentmods.dev/skills/nebius/nebius-physical-ai/ray-workbench)
Your own site
<a href="https://agentmods.dev/skills/nebius/nebius-physical-ai/ray-workbench"><img src="https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/ray-workbench/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ray-workbench

Your own site · 80×15
<a href="https://agentmods.dev/skills/nebius/nebius-physical-ai/ray-workbench"><img src="https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/ray-workbench.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 737 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.00737
Opus 5 $0.00019 $0.00368
Sonnet 5 $0.00008 $0.00147
Haiku 4.5 $0.00004 $0.00074

Measured 2d ago against content hash d713521ec284, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ray-workbench scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/tools/ray-workbench/SKILL.md · 63 lines

How it starts

The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ray in Workbench

Start with the consolidated guide. Use this skill to route a Ray request to behavior that current code actually supports.

Route the request

  • Native Jobs or Ray Core GPU development: use docs/testing/fast-source-iteration.md and the guarded CLIP application under npa/workflows/workbench/ray-clip-development/.
  • Ray Train: load skills/tools/ray-train-synthetic/SKILL.md. The shipped path is a synthetic Ray Train V2 application submitted through native Jobs, not an NPA Train service or workflow.
  • Ray Serve: load skills/tools/cosmos3-ray-serve/SKILL.md. Only Cosmos3-Nano has a first-class native Ray Serve path.
  • KubeRay: load skills/tools/fleet/SKILL.md. Fleet supports only the reviewed, fixed CPU RayCluster policy documented in docs/fleet-kuberay.md.
  • Ray Data or Ray Tune: state that no first-class Workbench recipe, CLI, service, workflow, or artifact contract exists. A trusted user may submit their own Ray application through a supported native Jobs environment; do not imply that this makes Data or Tune a supported Workbench capability.

There is no npa ray or NPA Jobs controller. Native ray job owns application submission, list, status, logs, and stop. SkyPilot owns the CLIP and Train hosts and long-running service task. Fleet owns KubeRay infrastructure. The Cosmos client owns verified S3 batch publication. Keep these lifecycle identities separate.

Operating rules

  1. Before provisioning, use npa workbench health preflight --checks nebius --json; add the selected capability's storage and model-access checks.
  2. For SkyPilot references, run npa skypilot bootstrap and resolve NPA_SKYPILOT_BIN from npa skypilot status --bin-path. Never use ambient management Ray discovery or sky from PATH.
  3. Keep Jobs and GCS on private networking behind an authenticated loopback tunnel. Ray accepts trusted code and a namespace is not a tenant boundary.
  4. Use unique native submission IDs. ray job stop must reach terminal status before hosting teardown.
  5. Preserve the path-specific artifact boundary before cleanup: checksummed CLIP output, Train checkpoints/exports, verified Cosmos S3 publications, or explicitly copied KubeRay application output.
  6. Cancel exact application jobs before the exact SkyPilot service task or owned Fleet target. Preserve shared clusters, APIs, controllers, projects, and storage unless their ownership is separately established.

Read the full file on GitHub · 63 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 63 lines · 38 tokens per session scan A d713521ec284

Subscribe to this mod's changes

ray-workbench is a skill published in the GitHub repository nebius/nebius-physical-ai (29 stars, last pushed today), licensed Apache-2.0. It adds 38 tokens to every session and 737 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-10.

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