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experiment-stop

Skill

Stop a running GrowthBook experiment via the REST API, optionally declaring a winning variation and rolling it out to 100% of eligible traffic. Use when the user says "stop this experiment", "end the A/B test", "declare a winner for X", "ship the winning variation", "roll back the test", or "we're d

0API Tools

Install

git clone https://github.com/growthbook/skills.git ~/.claude/skills/experiment-stop

What is experiment-stop?

Stop a running GrowthBook experiment via the REST API, optionally declaring a winning variation and rolling it out to 100% of eligible traffic. Use when the user says "stop this experiment", "end the A/B test", "declare a winner for X", "ship the winning variation", "roll back the test", or "we're done with this experiment". For interpreting results before deciding, use experiment-analyze first.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Run shell commands

Declares Bash

~100 tokens of context used while enabled, before you invoke anything

All declared tools (1)
Bash

Documentation

README · ~7 min read

experiment-stop

Stop a running experiment, optionally declaring a winning variation and ramping it to all eligible traffic via a temporary rollout. The endpoint is POST /api/v1/experiments/<id>/stop (a dedicated endpoint, not the generic update). All variation references are variation ID strings like var_abc123, not 0-based integer indexes.

All API calls go through the bundled helper: ${CLAUDE_PLUGIN_ROOT}/scripts/gb-call. It needs GB_API_KEY — set in your shell, or written to ~/.config/growthbook/.env by /growthbook:gb-setup. If unset or invalid, gb-call's error message points back at /growthbook:gb-setup.

Workflow

  1. Fetch the current experiment.

    gb-call GET /api/v1/experiments/<experiment-id>

    Check the status field. Only running experiments should be stopped via this skill. If status === "draft", the experiment hasn't started — the user wants to delete it, not stop it (different operation). If status === "stopped", it's already done.

    Also capture the type field. If type === "multi-armed-bandit", halt and tell the user this skill targets standard A/B tests; bandits have their own lifecycle (stop is similar but interpretation and rollout differ — recommend they review in the UI before scripting).

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