Convex Quickstart

Set up a working Convex project as fast as possible.

When to Use

• Starting a brand new project with Convex
• Adding Convex to an existing React, Next.js, Vue, Svelte, or other app
• Scaffolding a Convex app for prototyping

When Not to Use

• The project already has Convex installed and convex/ exists - just start building
• You only need to add auth to an existing Convex app - use the convex-setup-auth skill

Workflow

1. Determine the starting point: new project or existing app
2. If new project, pick a template and scaffold with npm create convex@latest
3. If existing app, install convex and wire up the provider
4. Run npx convex dev to connect a deployment and start the dev loop
5. Verify the setup works

Path 1: New Project (Recommended)

Use the official scaffolding tool. It creates a complete project with the frontend framework, Convex backend, and all config wired together.

Pick a template

If the user has not specified a preference, default to react-vite-shadcn for simple apps or nextjs-shadcn for apps that need SSR or API routes.

You can also use any GitHub repo as a template:

npm create convex@latest my-app -- -t owner/repo
npm create convex@latest my-app -- -t owner/repo#branch

Scaffold the project

Always pass the project name and template flag to avoid interactive prompts:

npm create convex@latest my-app -- -t react-vite-shadcn
cd my-app
npm install

The scaffolding tool creates files but does not run npm install, so you must run it yourself.

To scaffold in the current directory (if it is empty):

npm create convex@latest . -- -t react-vite-shadcn
npm install

Start the dev loop

npx convex dev is a long-running watcher process that syncs backend code to a Convex deployment on every save. It also requires authentication on first run (browser-based OAuth). Both of these make it unsuitable for an agent to run directly.

Ask the user to run this themselves:

Tell the user to run npx convex dev in their terminal. On first run it will prompt them to log in or develop anonymously. Once running, it will:

• Create a Convex project and dev deployment
• Write the deployment URL to .env.local
• Create the convex/ directory with generated types
• Watch for changes and sync continuously

The user should keep npx convex dev running in the background while you work on code. The watcher will automatically pick up any files you create or edit in convex/.

Exception - cloud or headless agents: Environments that cannot open a browser for interactive login should use Agent Mode (see below) to run anonymously without user interaction.

Start the frontend

The user should also run the frontend dev server in a separate terminal:

npm run dev

Vite apps serve on http://localhost:5173, Next.js on http://localhost:3000.

What you get

After scaffolding, the project structure looks like:

my-app/
  convex/           # Backend functions and schema
    _generated/     # Auto-generated types (check this into git)
    schema.ts       # Database schema (if template includes one)
  src/              # Frontend code (or app/ for Next.js)
  package.json
  .env.local        # CONVEX_URL / VITE_CONVEX_URL / NEXT_PUBLIC_CONVEX_URL

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