flags-sdk

Ship feature flags and experiments with fewer setup gaps.

feature flagging

What it does

Sets up and manages feature flags and A/B tests in Next.js or SvelteKit applications.

When to use it

Use when installing, configuring, or adding feature flags, or when managing remote flags through the Vercel CLI.

Give it a feature-flag setup or implementation request in a project; it configures the SDK, updates the code, and manages requested remote flags.

What you provide

This skill

Vercel Flags

Write

Creates remote feature flags

Vercel environment variables

Read

Pulls Vercel environment credentials

vercel

Execute

Installs the Vercel CLI globally

The Vercel CLI must be installed for project linking, environment pulls, and remote flag management.

Requires authenticated access to Vercel for linking projects and managing remote flags.

An SDK key in `.env.local` is an alternative for applications outside Vercel, custom environments, or another project's flags.

The Development secret is stored in `.env.local` and is required for precompute, Flags Explorer, and overrides.