Elements MCP Server

NVIDIA Elements

NVIDIA Design System and UI Agent Harness for AI/ML Factories, Robotics, and Autonomous Vehicles.

• Agent-ready tooling: CLI and MCP expose component APIs, tokens, examples, imports, validation, and setup to terminals and AI assistants.
• Framework agnostic: Web Components run in React, Angular, Vue, Svelte, Lit, plain HTML, server-rendered templates, and mixed stacks.
• Built for AI infrastructure: Operational UI for AI/ML workloads, autonomous vehicle tools, and robotics consoles.
• Stable API contracts: Skills and lint guide authoring best practices, common UI patterns, and automated static analysis.

Requests and Contributions

• NVIDIA Elements Documentation
• Contribution Guidelines
• Feature request
• Bug report

Organization

The repository uses a top-level repository with individual project directories.

Project directories have their own package.json and commands. Run CI and development setup at the root repository level.

Examples of projects include:

• /projects/starters - Suite of standardized starter apps for Elements and Patterns
• /projects/core - Elements library: curated UI maintained by the Elements team
• /projects/themes - Elements Theme library: provides a set of supported themes for Element based projects
• /projects/styles - Elements Styles library: provides a set of CSS utilities for layout and typography

Development

Setup

To set up repository dependencies and run the full build, run the following commands at the root of the repository:

The CI pipeline also builds Go starters. Install Go 1.26.x before running the full local CI pipeline.

# install dependencies https://mise.en.dev/getting-started.html
curl https://mise.run | sh
~/.local/bin/mise run setup

Troubleshooting

If you are coming from development from a different repository, you may need to refresh the repository toolchain with mise. Run mise run install at the root of the project to install the Node.js, pnpm, Vale, Go, Git LFS, and package versions from mise.toml and pnpm-lock.yaml.

If you actively switch between different repositories, run commands through mise exec -- or activate mise in your shell so it switches tools automatically.

Building

Both the top-level repository and each project have a set of standardized npm scripts. To build and test all projects, run mise exec -- pnpm run ci at the root of the repository.

Top-Level Repository

• ci: run full build/lint/test
• ci:all: entire CI process: build, lint, unit/lighthouse/visual tests
• ci:reset: clear all caches/dependencies then reinstall dependencies

Individual Projects

Common project scripts include:

• dev: run in watch mode
• build: run project/library build
• test: run unit tests
• test:lighthouse: run lighthouse performance tests
• test:visual: run playwright visual regression tests
• test:axe: run axe tests for a11y

The available scripts vary by project. Check the project's package.json before running project-specific commands.

For details about the repository build and runtime flow, see the build system documentation.

Workflow

Before creating a branch or pull request, make a new issue or feature request first so the team can check alignment and avoid duplicate work.

Create a Branch

Use a descriptive branch name with the topic/ prefix. Example topic/bug-fix.

git checkout -b topic/bug-fix

After creating your branch, make your source code changes. After you complete them, run mise exec -- pnpm run ci in the root of the repo to run all the builds and tests. If all tests pass, you are ready to create a PR.

Commit Messages

The repo uses Semantic Release to manage package changes. Commit messages determine the release on merge. Commit Lint enforces commit formatting.

git commit -a -s -m "fix(core): disable multi-select"

Example Commit

Keep commit names focused on your changes. The release process uses the commit message to determine the next release and generated changelog notes.

Opening a Pull Request

Once you have committed your changes to your branch locally, push them to the remote GitHub repository.

git push --set-upstream origin topic/bug-fix

Open a new Pull Request in GitHub. Request review from the team members and apply the appropriate labels in the GitHub UI, for example, type:fix and scope(core).

Amending Commit

If there are changes requested, make the requested changes locally and amend the commit.

git commit -a --amend --no-edit

This adds the changes to your existing commit. Then push the updated commit back to the remote branch for review.

git push --force origin topic/bug-fix

Rebasing Commit

If main changes before PR approval, rebase your local branch to include the latest changes from main.

git checkout main # Switch to main branch
git pull # Pull down any new changes
git checkout topic/bug-fix # Switch back to your topic branch
git rebase main # Rebase your branch onto the latest main

You may have to resolve any merge conflicts that arise from this process. Once complete, push the updated branch back to the remote repository for review.

New Project

When creating a new project, ex: ./projects/code, make sure to add the project to the pnpm-workspace.yaml located at the root directory.

Release

After approval, merge your Pull Request into main through the GitHub UI. GitHub Actions triggers a new release automatically. Semantic Release calculates the version from the commit type. The changelog also includes the commits from the PR.