datadesigner-docs

A documentation-maintenance skill for the NeMo Data Designer website, whose source files are stored under the project’s fern/ directory.

In plain words
What is it for?
Use it to add, edit, move, or remove documentation pages, fix links, update navigation, manage Dev Notes, preview or publish docs, and regenerate notebooks.
Why use it?
It keeps user-facing documentation in the correct versioned location and accounts for navigation, redirects, previews, publishing, and generated notebooks.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/nvidia-nemo/datadesigner/datadesigner-docs
Any agent
npx skills add NVIDIA-NeMo/DataDesigner --skill datadesigner-docs
Clone the repo
git clone --depth 1 https://github.com/NVIDIA-NeMo/DataDesigner

Made for: Claude Code, Codex.

Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,155 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00080 $0.05155
Opus 5 $0.00040 $0.02577
Sonnet 5 $0.00016 $0.01031
Haiku 4.5 $0.00008 $0.00515

Measured yesterday against content hash 3719bff9a484, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

datadesigner-docs 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 yesterday.

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.

.agents/skills/datadesigner-docs/SKILL.md · 467 lines

How it starts

The opening of the file, as written. The whole thing — 467 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Data Designer Docs Maintenance

Unified skill for adding, updating, moving, and removing pages on the NeMo Data Designer Fern docs site.

Current URL: docs.nvidia.com/nemo/datadesigner (see instances in fern/docs.yml). Source of truth for everything user-facing is fern/.

Scope Rule

ALL doc prose edits happen under fern/. The remaining docs/ directory is only for notebook source, generated Colab notebooks, docs scripts, and downloadable recipe scripts. docs/notebook_source/*.py remains canonical for notebook code. Concept pages, recipes, plugins, and Dev Notes prose live under fern/versions/latest/pages/.

Versioning Model

main contains only the latest Fern authoring docs. Historical release snapshots live on the CI-managed docs-website branch and must not be edited on main.

fern/versions/
├── latest.yml          ← authoring nav file
└── latest/pages/       ← authoring MDX tree

docs.yml on main registers only slug: latest. When you edit docs, edit latest/pages/ and latest.yml.

Dev Notes are patched into the published latest docs by CI. Add new posts to latest/pages/devnotes/posts/ and latest.yml on main.

For future Fern-native releases, do not copy page trees by hand on main. The release workflow snapshots latest into a frozen version on docs-website.

Layout at a Glance

fern/
├── README.md                  ← maintainer cheat sheet
├── docs.yml                   ← title, theme, versions:, redirects, custom-domain
├── fern.config.json           ← organization + fern-api version pin
├── main.css                   ← bundled NVIDIA theme CSS
├── assets/                    ← logos, favicon, recipe assets, devnote post images (shared)
├── images/                    ← /images/* references from MDX
├── styles/                    ← per-component CSS (notebook-viewer, authors, metrics-table, …)
├── components/                ← React/JSX MDX components
│   ├── NotebookViewer.tsx     ← renders converted .ipynb cells with outputs
│   ├── Authors.tsx            ← devnote bylines (uses devnotes/authors-data.ts)
│   ├── MetricsTable.tsx       ← benchmark tables w/ best-value highlight
│   ├── TrajectoryViewer.tsx   ← multi-turn tool-call traces (research dev notes)
│   ├── BadgeLinks.tsx         ← header shields (license, github, etc.)
│   ├── Tag.tsx, CustomCard.tsx, CustomFooter.tsx
│   ├── notebooks/             ← gitignored per-tutorial *.json + *.ts output
│   └── devnotes/              ← .authors.yml, authors-data.ts, per-post trajectory data
├── scripts/
│   └── ipynb-to-fern-json.py  ← .ipynb → fern/components/notebooks/*.{json,ts}
└── versions/
    ├── latest.yml             ← authoring navigation tree
    └── latest/pages/          ← authoring MDX content

Read the full file on GitHub · 467 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. yesterday First seen · 467 lines · 80 tokens per session scan A 3719bff9a484

Subscribe to this mod's changes

datadesigner-docs is a skill published in the GitHub repository NVIDIA-NeMo/DataDesigner (2,194 stars, last pushed 2d ago), licensed Apache-2.0. It adds 80 tokens to every session and 5,155 once invoked, about $0.0004 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 2026-08-30.

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