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vercel-flags

Implement and manage feature flags with Vercel Flags and SDKs.

246|42|Updated Mar 4, 2026
Search Tags:#sdk#vercel#feature flags#experimentation#ab testing#rollouts
One-click install
npx skills add https://github.com/vercel-labs/vercel-plugin --skill vercel-flags
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: vercel-flags
Source: https://github.com/vercel-labs/vercel-plugin/tree/main/skills/vercel-flags
Command: npx skills add https://github.com/vercel-labs/vercel-plugin --skill vercel-flags

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill simplifies the management of feature flags, enabling controlled rollouts, A/B testing, and experimentation within your Vercel projects.

Core Features & Use Cases

  • Feature Flagging: Define and manage feature flags for gradual rollouts and A/B testing.
  • Provider Integration: Connects with Vercel Flags and supports third-party providers like LaunchDarkly.
  • Use Case: Roll out a new UI feature to 10% of your users first, monitor its performance, and gradually increase the rollout percentage or disable it if issues arise.

Quick Start

Use the vercel-flags skill to set up a new feature flag for the 'new-checkout-flow' experiment.

Frequently Asked Questions about vercel-flags

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement feature flags for gradual rollouts in Next.js?▼

Yes, you can use third-party feature flag providers like LaunchDarkly with Vercel Flags. The platform supports integration through adapters, allowing you to connect your existing provider while managing A/B testing and rollouts.

What is the best way to run A/B testing experiments in SvelteKit?▼

The best way to run A/B testing in SvelteKit is using a feature flag platform with dedicated SDKs. You define experiment flags, apply the SvelteKit evaluation patterns, and route users to variants to measure performance outcomes.

Does Vercel Flags support third-party experimentation providers?▼

To configure a feature flag in Vercel, you define the flag syntax for your experiment, such as a 'new-checkout-flow', and set the initial rollout percentage. You then monitor its performance to decide whether to increase exposure or disable it.

How do I set up a new feature flag for an experiment?▼

To set up a new feature flag, you define the flag syntax for your experiment, such as a 'new-checkout-flow', and configure the rollout percentage. You then use the SDK evaluation patterns to serve variations to your users.

Do I need an adapter to use feature flags with my current provider?▼

Yes, you need an adapter to connect third-party feature flag providers like LaunchDarkly to the Vercel Flags platform. Adapters translate your provider's configurations into evaluation patterns usable within frameworks like Next.js and SvelteKit.

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