Compare Cache Runs

When your CI cache hit rates tank after a merge, this skill helps you figure out why. It compares two tuist cache runs (by ID, dashboard URL, or branch name), calculates hit rate deltas, and traces which modules triggered the invalidation cascade. The real value is in the root cause analysis: it distinguishes between targets with direct source changes versus the dozen downstream modules that got invalidated just because their dependency hash changed. You get a breakdown showing duration regression, cache metrics, and specific recommendations like splitting fat modules or warming caches after rebasing. Saves you from manually diffing JSON output and guessing which changed file nuked your cache warming strategy.

Install to Claude Code

npx -y skills add tuist/agent-skills --skill compare-cache-runs --agent claude-code