flags — declarative official, declarative, ide skills, frontend, javascript, library, Claude Code, Cursor, Windsurf

v1.0.0
GitHub

About this Skill

Perfect for Debugging Agents needing to compare and analyze feature flag states across multiple release channels. Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.

# Core Topics

facebook facebook
[243.6k]
[50650]
Updated: 3/5/2026

Agent Capability Analysis

The flags skill by facebook is an open-source official AI agent skill for Claude Code and other IDE workflows, helping agents execute tasks with better context, repeatability, and domain-specific guidance. Optimized for declarative, frontend, javascript.

Ideal Agent Persona

Perfect for Debugging Agents needing to compare and analyze feature flag states across multiple release channels.

Core Value

Empowers agents to compare flags between channels using the `--diff` option, output results in CSV format with `--csv`, and debug feature behaviors with detailed flag status information, including enabled, disabled, and variant states.

Capabilities Granted for flags

Comparing feature flags between OSS channels like `canary` and `next`
Debugging why a feature behaves differently across release channels
Outputting flag states in CSV format for further analysis

! Prerequisites & Limits

  • Requires knowledge of specific channel names like `www`, `www-modern`, and `rn`
  • Limited to comparing and analyzing feature flags, not modifying them
Labs Demo

Browser Sandbox Environment

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Experience this Agent in a zero-setup browser environment powered by WebContainers. No installation required.

Boot Container Sandbox

flags

Install flags, an AI agent skill for AI agent workflows and automation. Works with Claude Code, Cursor, and Windsurf with one-command setup.

SKILL.md
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Feature Flags

Arguments:

  • $ARGUMENTS: Optional flags

Options

OptionPurpose
(none)Show all flags across all channels
--diff <ch1> <ch2>Compare flags between channels
--cleanupShow flags grouped by cleanup status
--csvOutput in CSV format

Channels

  • www, www-modern - Meta internal
  • canary, next, experimental - OSS channels
  • rn, rn-fb, rn-next - React Native

Legend

✅ enabled, ❌ disabled, 🧪 __VARIANT__, 📊 profiling-only

Instructions

  1. Run yarn flags $ARGUMENTS
  2. Explain the output to the user
  3. For --diff, highlight meaningful differences

Common Mistakes

  • Forgetting __VARIANT__ flags - These are tested both ways in www; check both variants
  • Comparing wrong channels - Use --diff to see exact differences

FAQ & Installation Steps

These questions and steps mirror the structured data on this page for better search understanding.

? Frequently Asked Questions

What is flags?

Perfect for Debugging Agents needing to compare and analyze feature flag states across multiple release channels. Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.

How do I install flags?

Run the command: npx killer-skills add facebook/react/flags. It works with Cursor, Windsurf, VS Code, Claude Code, and 19+ other IDEs.

What are the use cases for flags?

Key use cases include: Comparing feature flags between OSS channels like `canary` and `next`, Debugging why a feature behaves differently across release channels, Outputting flag states in CSV format for further analysis.

Which IDEs are compatible with flags?

This skill is compatible with Cursor, Windsurf, VS Code, Trae, Claude Code, OpenClaw, Aider, Codex, OpenCode, Goose, Cline, Roo Code, Kiro, Augment Code, Continue, GitHub Copilot, Sourcegraph Cody, and Amazon Q Developer. Use the Killer-Skills CLI for universal one-command installation.

Are there any limitations for flags?

Requires knowledge of specific channel names like `www`, `www-modern`, and `rn`. Limited to comparing and analyzing feature flags, not modifying them.

How To Install

  1. 1. Open your terminal

    Open the terminal or command line in your project directory.

  2. 2. Run the install command

    Run: npx killer-skills add facebook/react/flags. The CLI will automatically detect your IDE or AI agent and configure the skill.

  3. 3. Start using the skill

    The skill is now active. Your AI agent can use flags immediately in the current project.

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