Instrument Feature Flags

This automates the process of wrapping new features behind PostHog feature flags so you can roll them out safely. It detects your platform from dependency files, sets up the PostHog SDK if needed, and adds the actual flag checks around your code. Works across React, Python, Go, mobile platforms, and about a dozen others with reference docs for each. The nice part is it can connect to PostHog's MCP server to actually create or look up flags instead of making you context switch to the dashboard. It follows the principle of minimal changes, adding flag logic without restructuring your existing code, and defaults to server-side evaluation to avoid UI flicker. Built by PostHog themselves, so the platform-specific patterns should stay current.

Install to Claude Code

npx -y skills add posthog/skills --skill instrument-feature-flags --agent claude-code