sim-to-real

sim-to-real is a skill for Claude Code, Codex from nebius/nebius-physical-ai. It costs 34 tokens per session (572 once invoked), scanned A, original, Apache-2.0.

A workflow guide for moving robotics work from simulation to physical robots. It covers simulated data, policy training, synthetic data, evaluation, and deciding whether to continue the process.

In plain words
What is it for?
It is for designing and operating robotics simulation-to-real workflows, including training policies, evaluating rollouts, and routing artifacts for review.
Why use it?
It helps teams keep data, model checkpoints, evaluation results, and workflow stages connected across repeated robotics experiments.

Skill for Claude CodeCodex

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

Good fit It is for designing and operating robotics simulation-to-real workflows, including training policies, evaluating rollouts, and routing artifacts for review.

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Install with agentmods
npx agentmods add skills/nebius/nebius-physical-ai/sim-to-real
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 sim-to-real
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 sim-to-real

README.md
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Your own site
<a href="https://agentmods.dev/skills/nebius/nebius-physical-ai/sim-to-real"><img src="https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/sim-to-real/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 sim-to-real

Your own site · 80×15
<a href="https://agentmods.dev/skills/nebius/nebius-physical-ai/sim-to-real"><img src="https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/sim-to-real.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 572 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00034 $0.00572
Opus 5 $0.00017 $0.00286
Sonnet 5 $0.00007 $0.00114
Haiku 4.5 $0.00003 $0.00057

Measured 4d ago against content hash 470c8592e77c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

sim-to-real 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 4d 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/workflows/sim-to-real/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sim-To-Real

When To Use

Use this skill for robotics teams that need configurable data and artifact flow through simulation, policy training, synthetic data generation, evaluation, and iteration without customer-specific names or infrastructure baked into source.

Procedure

  1. Define a run ID and run-scoped S3 prefixes before launching.
  2. Import source robot, scene, or task data into the run prefix.
  3. Generate or augment simulation data with configured workbench tools.
  4. Train or fine-tune the policy against the run-scoped dataset and write checkpoints to S3.
  5. Evaluate the policy with deterministic metrics or a configured VLM backend.
  6. Decide whether to stop, continue, or route artifacts for review based on configurable thresholds.

Three-Tier Contract

  • CLI: use npa workbench workflow, npa workbench trigger, and tool commands such as Genesis, LeRobot, SONIC, MJLab, Retargeting, LanceDB, Cosmos, and VLM-eval.
  • SDK: keep workflow submission and config materialization in shared helpers so notebooks and services use the same artifact paths.
  • Workflows: workflows/testing/vlm-eval-loop.yaml is the executable reference for the VLM-eval gating loop (scores a whole rollout set and writes task_success_report.json). The staged engine's single maintained end-to-end YAML is workflows/main/sim2real.yaml; similarly named npa.workflow files are explicitly demo-only DSL fixtures. sim-to-real-pipeline.yaml and sim-to-real-trigger.yaml are retired — the first ran npa.workflows.sim_to_real real-loop, which raises a DeprecationWarning pointing here.

Gotchas

  • Do not hardcode customer names, event names, personal names, tenant IDs, registry IDs, bucket names, VM IPs, or private endpoints.
  • Prefer dry-run plans for data movement, autoscaling, and external service calls when validating workflow shape.
  • Keep artifacts partitioned by run ID so repeated experiments do not overwrite each other.
  • Use existing workbench tools for S3 sync, model inference, training, and VLM evaluation instead of one-off scripts.

Read the full file on GitHub · 59 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. 4d ago Changed 470c8592e77c
  2. 9d ago First seen · 59 lines · 34 tokens per session scan A 108387c9a48a

Subscribe to this mod's changes

sim-to-real is a skill published in the GitHub repository nebius/nebius-physical-ai (29 stars, last pushed today), licensed Apache-2.0. It adds 34 tokens to every session and 572 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 2026-09-03.

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