This is a router skill that decides which of three sub-skills to load when you're working with Xcode 26.3's built-in MCP server. It splits setup and config issues (mcpbridge connection, client-specific quirks, permission dialogs) from actual tool usage patterns (build/test/preview workflows, tab targeting) from API reference lookups (tool parameters and schemas). The decision tree and anti-rationalization table are helpful if you're debugging why BuildProject keeps failing silently or why Cursor chokes on Xcode's MCP responses. Honestly, the main value is preventing you from guessing at tool schemas or trying to replicate IDE state with raw xcodebuild commands when the MCP tools already expose diagnostics and navigator state.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-xcode-mcp-tools