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flags-sdk

Implement and manage feature flags and A/B tests with the Flags SDK and Vercel Flags for Next.js and SvelteKit apps.

614|83|Updated Dec 12, 2024
Search Tags:#A/B testing#next.js#feature flags#experimentation#sveltekit#vercel flags
One-click install
npx skills add https://github.com/vercel/flags --skill flags-sdk-vercel
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: flags-sdk
Source: https://github.com/vercel/flags/tree/main/skills/flags-sdk
Command: npx skills add https://github.com/vercel/flags --skill flags-sdk-vercel

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill simplifies the process of implementing and managing feature flags within applications, enabling controlled rollouts and A/B testing.

Core Features & Use Cases

  • Declarative Flags: Define feature flags directly in your codebase using a clear, code-first approach.
  • Provider Agnostic: Works with various feature flag providers through an adapter pattern, including Vercel Flags, Statsig, LaunchDarkly, and more.
  • Server-Side Evaluation: Ensures flags are evaluated on the server for performance and security, preventing layout shifts.
  • Use Case: Roll out a new user interface to 10% of your users first, monitor feedback, and then gradually increase the rollout percentage or disable it if issues arise, all managed through code.

Quick Start

Install the flags package by running pnpm install flags @flags-sdk/vercel.

Frequently Asked Questions about flags-sdk

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

FAQPage Schema
How do I implement feature flags in a Next.js application?▼

You implement feature flags in Next.js by installing the `flags` and `@flags-sdk/vercel` packages, then declaring and evaluating flags directly in your codebase using the Flags SDK.

What is server-side evaluation for feature flags and why use it?▼

Server-side evaluation computes feature flags on the server to ensure performance and security, preventing client-side layout shifts when rolling out new user interfaces or A/B tests.

Can I use LaunchDarkly or Statsig with Vercel Flags?▼

Yes, the Flags SDK is provider agnostic and supports integrating with various feature flag providers like Statsig and LaunchDarkly through an adapter pattern.

How do I set up A/B testing in SvelteKit?▼

You can set up A/B testing in SvelteKit by using the Flags SDK to define feature flags, configure an evaluation context, and utilize precompute patterns for static pages.

What is the best way to manage controlled rollouts for new features?▼

Managing controlled rollouts is best done by defining declarative feature flags in your code to gradually increase rollout percentages, monitor feedback, and disable features if issues arise.

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