What is nvwb-project?

A guide for working inside an NVIDIA AI Workbench project container, identified by a .project/spec.yaml file. It explains the project layout and how edits, services, and environment changes behave there.

It helps inspect the project specification, edit live-mounted code, reach services by name, and understand when environment changes require a rebuild or restart.

It prevents confusion about where files live and which operations must happen inside or outside the container.

How brevdev/workshop-build-an-agent configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to brevdev/workshop-build-an-agent. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/brevdev/workshop-build-an-agent/main/.agents/skills/nvwb-project/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/brevdev/workshop-build-an-agent

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/brevdev/workshop-build-an-agent/nvwb-project/github.svg)](https://agentmods.dev/skills/brevdev/workshop-build-an-agent/nvwb-project)

Your own site

<a href="https://agentmods.dev/skills/brevdev/workshop-build-an-agent/nvwb-project"><img src="https://agentmods.dev/badge/skills/brevdev/workshop-build-an-agent/nvwb-project/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/brevdev/workshop-build-an-agent/nvwb-project"><img src="https://agentmods.dev/badge/skills/brevdev/workshop-build-an-agent/nvwb-project.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,330 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 2 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.

Model	Per session	Once invoked
Fable 5.1	$0.00045	$0.01330
Opus 5.5	$0.00018	$0.00532
Sonnet 5.5	$0.00009	$0.00266
Haiku 4.5	$0.00005	$0.00133

Measured 1mo ago against content hash 323f4b4d0a5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

nvwb-project scanned grade B with 2 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.

The scan reads SKILL.md. This mod also ships 10 executable files (hooks/cursor-inner-files.sh, hooks/cursor-inner-read.sh, hooks/cursor-inner-shell.sh, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- **Both scripts run as the `workbench` user (not root)** — any write to a system directory requires `sudo`. This includes `mkdir`, `npm install -g`, writing to `/usr/local/`, etc. Shell redirections (`>`, `>>`) also run

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Compose services are reachable by service name (e.g. `curl http://api:8080/`) via the shared `workbench` network

.agents/skills/nvwb-project/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

NVIDIA AI Workbench — In-Container Project Awareness

This skill activates when Codex is working inside an AI Workbench project container (detected by .project/spec.yaml existing in or above the current working directory).

Detection

If .project/spec.yaml exists in the project root, this is a Workbench project. Read it first to understand the project's layout, apps, mounts, and resources.

Key Facts

The project root is bind-mounted at /project/ inside the container
The nvwb CLI is NOT available inside the container — all nvwb commands must run on the user's local machine (the control plane)
This container may be running locally or on a remote — it does not matter for in-container work; the project files are always at /project/
Code in layout directories is live-mounted — edits take effect immediately
The environment variable AI_WORKBENCH_FLAG=true may be set to detect Workbench context
Compose services are reachable by service name (e.g. curl http://api:8080/) via the shared workbench network

What's Safe to Edit

Freely editable — no action needed:

Any files in layout directories (code/, data/, models/ or custom paths from spec.yaml)
Application code, scripts, notebooks

Requires rebuild — inform user to run nvwb build on the host:

apt.txt — system packages
requirements.txt — pip packages
preBuild.bash — pre-install build script
postBuild.bash — post-install build script

Requires restart — inform user to run nvwb close then nvwb open on the host:

variables.env — runtime environment variables
Mount configuration changes in .project/spec.yaml
App definitions in .project/spec.yaml

Edit carefully — validate format:

.project/spec.yaml — do not break YAML structure; suggest nvwb validate project-spec after changes

When Informing the User

After editing a build-time or runtime file, always tell the user what action is needed. Examples:

I've updated requirements.txt to add the transformers package. You'll need to run nvwb build on the host to rebuild the container with this change.

Read the full file on GitHub · 94 lines

Files

What ships with it

12 files 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.

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.

1mo ago First seen · 94 lines · 45 tokens per session scan B 323f4b4d0a5b

Subscribe to this mod's changes

nvwb-project is a skill published in the GitHub repository brevdev/workshop-build-an-agent (151 stars, last pushed 16d ago), licensed Apache-2.0. It adds 45 tokens to every session and 1,330 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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workshop-build-an-agent: Skill for Claude Code