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flag-default-value

Skill

Set the default value of a GrowthBook feature flag — the value served when no rules match. Use when the user says "change the default value of flag X", "what does this flag return when no rules apply", "set the fallback to false", "update the default to the new config", or "change what users get by

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Install

git clone https://github.com/growthbook/skills.git ~/.claude/skills/flag-default-value

What is flag-default-value?

Set the default value of a GrowthBook feature flag — the value served when no rules match. Use when the user says "change the default value of flag X", "what does this flag return when no rules apply", "set the fallback to false", "update the default to the new config", or "change what users get by default". Goes through a draft revision and requires publishing. For adding or editing targeting rules, use flag-targeting or flag-rules. For updating administrative metadata, use flag-metadata. For creating a new flag, use flag-create.

What this can do

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

Run shell commands

Declares Bash

~134 tokens of context used while enabled, before you invoke anything

All declared tools (1)
Bash

Documentation

README · ~3 min read

flag-default-value

Set the default value of a GrowthBook feature flag. The default value is what the SDK returns when no rules match a user — it's the flag's baseline state, not a targeting rule. Changes go through a draft revision and require publishing before they take effect.

All API calls go through the bundled helper: ${CLAUDE_PLUGIN_ROOT}/scripts/gb-call. It needs GB_API_KEY set in env or written to ~/.config/growthbook/.env by /growthbook:gb-setup.

Required inputs

  • Flag ID — kebab-case key. Use flag-search to resolve if the user gives a description.
  • New default value — must match the flag's valueType. Always serialized as a string.

Workflow

1. Fetch the flag

gb-call GET /api/v2/features/<flag-id>

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