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Flag Experiment

Category: Science & Research  ·  Sub-category: science-misc  ·  Last updated:
Add an experiment-ref rule to a GrowthBook feature flag to run an A/B test through that flag. Use when the user says "run an experiment through this flag", "add an A/B test to flag X", "link experiment Y to this flag", "set up variations on this flag for an experiment", "add an experiment-ref rule", or "wire up this experiment to the flag". For launching a full new experiment end-to-end, use experiment-launch. For editing the targeting conditions or scope of an existing experiment rule, use flag-targeting. For stopping an experiment and cleaning up its rule, use experiment-stop then flag-rules.
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From the source SKILL.md

Add an experiment-ref rule to a GrowthBook feature flag. This links a flag rule to a separately-managed GrowthBook experiment object — the experiment is the source of truth for variations, metrics, and analysis.

What this skill does

Flag Experiment is a community-contributed Claude Code skill in the science-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/flag-experiment/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user says "run an experiment through this flag", "add an A/B test to flag X", "link experiment Y to this flag", "set up variations on this flag for an experiment", "add an experiment-ref rule", or "wire up this experiment to the flag". For launching a full new experiment end-to-end, use experiment-launch.

Who uses this skill

The Flag Experiment Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/flag-experiment
curl -L https://claudskills.com/skills/flag-experiment/SKILL.md \
  -o ~/.claude/skills/flag-experiment/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/flag-experiment/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/flag-experiment/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\flag-experiment\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Flag Experiment Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/flag-experiment/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Flag Experiment skill do?
Add an experiment-ref rule to a GrowthBook feature flag to run an A/B test through that flag. Use when the user says "run an experiment through this flag", "add an A/B test to flag X", "link experiment Y to this flag", "set up variations on this flag for an experiment", "add an experiment-ref rule", or "wire up this experiment to the flag". For launching a full new experiment end-to-end, use experiment-launch. For editing the targeting conditions or scope of an existing experiment rule, use flag-targeting. For stopping an experiment and cleaning up its rule, use experiment-stop then flag-rules.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Flag Experiment skill?
Use Flag Experiment when your Claude Code task falls under the Science & Research category — specifically in the science misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Flag Experiment" or describe the task and let Claude pick). Browse related skills at /category/science/.
What is a Claude Code skill and how does the Flag Experiment skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Flag Experiment is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
growthbook. (2026). Flag Experiment [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/flag-experiment/
BibTeX
@misc{flag-experiment-2026,
  author    = {growthbook},
  title     = {Flag Experiment [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/flag-experiment/}
}

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More Science & Research skills

Browse all Science & Research skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Science & Research skills → Top 100 skills
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