Covers the full lifecycle of working with Xcode 26.3's built-in MCP server, from initial setup through daily usage. The skill splits into three clear branches: connection and configuration (including client-specific quirks and permission dialogs), workflow patterns for building, testing, and previewing through MCP tools, and a detailed API reference for all 20 exposed tools. The routing logic is unusually thorough, with explicit conflict resolution against other Apple development skills and a decision tree that keeps you from reaching for xcodebuild when MCP tools would give you richer IDE state. If you're wiring up any MCP client to Xcode or trying to understand why BuildProject isn't behaving, this is the right entry point.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-xcode-mcp