Flags SDK

Flags SDK

Vercel
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About

Flags SDK is an open source library designed for integrating feature flags into Next.js and SvelteKit applications. It allows developers to manage and implement feature flags, providing flexibility with integrations for any flag provider. The SDK supports AB testing, controlled rollouts, and experimentation, helping developers ship features faster and more efficiently. It features a simple, declarative API to define and use flags, making integration effortless. With Flags SDK, developers can release new features strategically, test them in production without breaking apps, and experiment with confidence. The toolkit ensures the website remains fast while following best practices for feature flag usage.

About

🛍️ In e-commerce, every minute of a broken checkout equals lost revenue. Most monitoring tools alert you after customers are already frustrated. PathCanary changes that. It runs real browser tests 24/7 (via Playwright), flags anomalies instantly, and can even perform an Assisted Rollback — opening revert PRs/MRs on GitHub or GitLab, or toggling feature flags on LaunchDarkly, Optimizely, or ConfigCat. The result? Hours of downtime reduced to minutes. In one real scenario: without PathCanary, a hidden checkout bug cost ~$15,000 in three hours. With PathCanary, the platform detected the issue in minutes, auto-triggered a rollback, and restored functionality — limiting losses to just ~$580. 🔒 For compliance-driven teams: Self-Hosted Runners, HMAC-signed security, full audit logs, and zero inbound ports. ⚙️ Benefits include 92% faster incident resolution, 80% fewer customer complaints, and dramatically less on-call fatigue. 👉 Turn your production into a self-healing system.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers in need of a simple, flexible solution to manage feature flags in their web applications

Audience

Companies that need to monitor their checkout flows

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

$79
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Vercel
Founded: 2015
United States
flags-sdk.dev/

Company Information

PathCanary
Founded: 2025
Europe
pathcanary.com

Alternatives

Alternatives

Categories

Categories

Application Performance Monitoring (APM) Features

Baseline Manager
Diagnostic Tools
Full Transaction Diagnostics
Performance Control
Resource Management
Root-Cause Diagnosis
Server Performance
Trace Individual Transactions

Integrations

GitHub
GitLab
Next.js
SvelteKit
Vercel AI Gateway

Integrations

GitHub
GitLab
Next.js
SvelteKit
Vercel AI Gateway
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