Claude Code Skills Not Triggering? 2 Fixes for 100% Activation

The point of Claude Skills in Claude Code is autonomous skill activation. You define a skill and Claude automatically triggers it when relevant. But if you've actually tried building with Skills, you know that's not how it behaves by default. They don't trigger consistently. Even when the trigger conditions look correct, Claude often ignores them. And while you can find workarounds like slash commands to fetch skills manually or stacking rules inside the CLAUDE.md file, these methods lose the core benefit: autonomous triggering. There's a system that gets skill activation to 95% with the right setup. After implementing it and testing other approaches, I found two methods plus a bonus tip that works. It's not perfect. But it's reliable enough to build on. In this article, I'll walk through the methods that make the difference. We'll use the valibot-usage skill as our running example so you can see exactly how these fixes work in practice. Table of Contents TL;DR Fix 1: Detection Hook +