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Feature Flags

by marcus

Feature Flags is a DevOps skill for Claude Code, published by marcus in sidecar.

1K stars79 forkson marcus/sidecarAdded 2026/08/21Repository updated 2026/08/21
agentic-aiagentic-workflowsclaude-codetui
Install in seconds
Install Feature Flags
Copy Feature Flags into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.
terminal
npx degit https://github.com/marcus/sidecar/tree/main/.claude/skills/feature-flags ~/.claude/skills/feature-flags

Requires Node.js. Downloads this skill only β€” not the rest of the repository β€” into your Claude Code skills folder.

Without Node.js

git clone https://github.com/marcus/sidecar.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file
.claude/skills/feature-flags/SKILL.md in marcus/sidecar
Installs to
~/.claude/skills/feature-flags
Collection
One of 16 skills cataloged from this repository
Category
DevOps β€” 798 skills

What Feature Flags does

Feature Flags gates experimental functionality in Sidecar with user-configurable settings. Use it to register flags, check them in code, and manage config or CLI overrides with clear priority rules.

Feature Flags is cataloged under DevOps on DirSkills. Feature Flags comes from a repository tagged agentic-ai, agentic-workflows, claude-code and tui.

Documentation

README

Feature Flags

Feature flags gate experimental functionality behind user-configurable settings, enabling safe rollout (default off), user opt-in, and easy rollback.

Checking Feature State

import "github.com/marcus/sidecar/internal/features"

if features.IsEnabled("tmux_interactive_input") {
    // Feature-gated code
}

Adding a New Feature Flag

  1. Define the feature in internal/features/features.go:
var MyNewFeature = Feature{
    Name:        "my_new_feature",
    Default:     false,
    Description: "Description of what this enables",
}
  1. Add to the allFeatures slice:
var allFeatures = []Feature{
    TmuxInteractiveInput,
    MyNewFeature, // Add here
}
  1. Use the feature check in your code:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Feature Flags

  • What else does marcus publish alongside Feature Flags?

    Feature Flags is one of 16 skills that DirSkills catalogs from marcus/sidecar, the repository it ships in. Its siblings there include Create Adapter, Create Modal and Create Plugin. Each one is a separate skill with its own page in this directory, installs the same way Feature Flags does, and is maintained by marcus in that same repository. The rest of the collection is listed on the marcus/sidecar page.

  • How does Feature Flags compare to other DevOps skills?

    Feature Flags ranks #427 by stars among the 798 DevOps skills in this catalog. The most-starred ones next to it are Backend Patterns, API Connector Builder and Migration. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Feature Flags against them. Open each page to compare what they document and how they install.

More from marcus/sidecar

Feature Flags is one of 16 skills cataloged on DirSkills from marcus/sidecar.

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