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.
npx skills add nebius/nebius-physical-ai --skill nebius-headless-oauthgit clone --depth 1 https://github.com/nebius/nebius-physical-aiWrote 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.
[](https://agentmods.dev/skills/nebius/nebius-physical-ai/nebius-headless-oauth)<a href="https://agentmods.dev/skills/nebius/nebius-physical-ai/nebius-headless-oauth"><img src="https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/nebius-headless-oauth/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.
<a href="https://agentmods.dev/skills/nebius/nebius-physical-ai/nebius-headless-oauth"><img src="https://agentmods.dev/badge/skills/nebius/nebius-physical-ai/nebius-headless-oauth.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.01813 |
| Opus 5.5 | $0.00016 | $0.00725 |
| Sonnet 5.5 | $0.00008 | $0.00363 |
| Haiku 4.5 | $0.00004 | $0.00181 |
Grade A, and why
nebius-headless-oauth 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nebius headless OAuth
Use the operator's signed-in browser to authenticate a Nebius CLI profile on another machine. Keep one CLI login process alive, open its authorization link, then copy the browser's final loopback URL into a private terminal on the CLI machine. The bundled helper delivers that callback to the waiting CLI.
This adapts the operator-contributed nebius-headless-oauth skill (MIT).
Nebius documents --no-browser, the
dynamic loopback redirect, and SSH forwarding. Manual callback delivery is this
skill's adaptation, not an upstream CLI command or an NPA agent chat feature.
Choose the authentication path
- For a readiness-only request, run
npa workbench health preflight --checks nebius --jsonand stop. A failure alone does not establish an expired login; distinguish missing configuration, denied access, and network failures before starting OAuth. - When SSH forwarding is available, use vm-nebius-auth. It returns the authorization link and exact tunnel command without transferring the callback code manually.
- For unattended VM or CI authentication, use a project-scoped service account. After initial setup, an attached VM identity or an authorized-key profile works without browser interaction. Choose its role for the intended operations. For interactive work that needs the operator's own identity, human OAuth avoids creating a separate account and maintaining an authorized key.
- Use this manual method for an authorized human login when forwarding is unavailable and the operator can enter hidden input in a terminal on the CLI machine, for example an existing private browser terminal. Chat alone does not provide that input channel. Never ask for a callback URL, authorization code, access token, or refresh token in chat or a tool-call argument.
- Preserve an npa-agent VM's attached-service-account metadata profile. This skill does not configure CI credentials, S3 keys, or Token Factory keys.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 150 lines · 41 tokens per session scan A c7ebee57ca8c
nebius-headless-oauth is a skill published in the GitHub repository nebius/nebius-physical-ai (50 stars, last pushed today), licensed Apache-2.0. It adds 41 tokens to every session and 1,813 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-15.
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