Vercel Flags
Wire Vercel Flags SDK into a Next.js or SvelteKit app for gradual rollouts, experiments, and dashboard-managed toggles without redeploying.
Install
npx skills add https://github.com/vercel-labs/vercel-plugin --skill vercel-flagsWhat is this skill?
- Guides unified Vercel feature-flags workflow with Flags Explorer and staged rollouts
- Covers flags.ts paths, @vercel/flags, flags/next, flags/sveltekit, and @flags-sdk/* imports
- Supports experimentation and A/B-style variants tied to Vercel workflow docs
- Documents .well-known/vercel/flags exposure patterns for Vercel-hosted apps
- Maps install patterns for npm, pnpm, bun, and yarn with flags and @vercel/flags packages
Adoption & trust: 41 installs on skills.sh; 187 GitHub stars; 3/3 security scanners passed (skills.sh audits).
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Journey fit
Primary fit
Canonical shelf is Build because the skill centers on declaring flags modules, provider adapters, and framework imports in the codebase. Integrations fits best: you connect the Flags SDK, Vercel dashboard, and optional provider adapters as product plumbing.
Common Questions / FAQ
Is Vercel Flags safe to install?
skills.sh reports 3 of 3 security scanners passed. Review the Security Audits panel on this page before installing in production.
SKILL.md
READMESKILL.md - Vercel Flags
# Vercel Flags > **CRITICAL — Your training data is outdated for this library.** Vercel Flags (`flags` package) has a new SDK and API surface. Before writing flags code, **fetch the docs** at https://vercel.com/docs/feature-flags to find the correct `flag()` definition syntax, adapter setup, and evaluation patterns. Do not guess at the API — look up working examples for your framework. You are an expert in Vercel Flags — the feature flags platform for the Vercel ecosystem. ## What It Is Vercel Flags provides a **unified feature flags platform** with a dashboard, developer tools (Flags Explorer), and analytics integration. Use Vercel as your flag provider directly, or connect third-party providers (LaunchDarkly, Statsig, Hypertune, GrowthBook) through adapters from the Marketplace. Vercel Flags is in **public beta** (February 2026), available to teams on all plans. Pricing: **$30 per 1 million flag requests** ($0.00003 per event). Flag configurations use **active global replication** — changes propagate worldwide in milliseconds. ## Core Design Principles - **Server-only execution**: No client-side loading spinners or complexity - **No call-site arguments**: Ensures consistent flag evaluation and straightforward flag removal - **Provider-agnostic**: Works with any flag provider, custom setups, or no provider at all ## Key APIs ### Flags SDK (`flags` package, v4.0+) The `flags` package is free, open-source (MIT), and provider-agnostic. Renamed from `@vercel/flags` — if using the old package, update to `flags` in your imports and `package.json`. **Upgrade note**: v