flags-sdk

Implement feature flags and A/B tests in Next.js and SvelteKit apps.

1|1|Updated Feb 15, 2026
One-click install
npx skills add https://github.com/yunseo-kim/agent-toolbox --skill flags-sdk
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: flags-sdk
Source: https://github.com/yunseo-kim/agent-toolbox/tree/main/catalog/skills/flags-sdk
Command: npx skills add https://github.com/yunseo-kim/agent-toolbox --skill flags-sdk

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill simplifies the implementation and management of feature flags and A/B tests within your Next.js and SvelteKit applications, enabling dynamic feature rollouts and experimentation.

Core Features & Use Cases

  • Flags as Code: Declare flags directly in your codebase using a declarative API.
  • Provider Agnostic: Works with various flag providers (Vercel, Statsig, LaunchDarkly, etc.) through an adapter pattern.
  • Precompute Pattern: Optimize for static pages by evaluating flags server-side and encoding results.
  • Use Case: Roll out a new UI feature to 10% of your users, monitor its performance, and easily toggle it on or off without redeploying your application.

Quick Start

Use the flags-sdk skill to declare a new feature flag named 'new-dashboard'.

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 Next.js?▼

Implement feature flags in Next.js using the Flags SDK by declaring flags with the `flag()` API, setting up provider adapters, and managing evaluation context to toggle UI features dynamically.

Can I use feature flags for A/B testing in SvelteKit?▼

Yes, SvelteKit supports feature flag A/B testing through the `flags/sveltekit` package, enabling you to declare experiments, route users into variations, and monitor performance before a full rollout.

Does the Flags SDK work with LaunchDarkly and Statsig?▼

The Flags SDK is provider agnostic and supports LaunchDarkly, Statsig, and Vercel through an adapter pattern, enabling seamless integration with your existing feature flag management platforms.

How do I optimize feature flags for static pages?▼

Optimize feature flags for static pages by applying the precompute pattern, which evaluates flags server-side and encodes the results to ensure fast delivery without client-side evaluation overhead.

What is the Flags Explorer used for?▼

Flags Explorer integrates with the Flags SDK to manage and monitor feature flags and A/B tests, providing an interface to toggle configurations and track rollout performance within your application.