Skill Mix is a management layer for AI agent skills — discover, install, scope, rate, and update skills across Cursor, Codex, and Claude Code.

Problem: All three tools follow the open Agent Skills standard (SKILL.md), but none solves the management problem: how to find the right skill, avoid duplicates, track where it came from, or know if it's any good.

Solution: A desktop app that unifies skill discovery and management. Browse a shared registry, install with one click, manage scopes (personal, org, project), track provenance, and see community quality scores. Includes a development mode for authoring and testing skills before publishing.