Go provides built-in packages for creating custom static analyzers. The go/ast package represents code as abstract syntax trees, go/types adds semantic information like variable types and object references, and the golang.org/x/tools/go/analysis framework handles parsing, type checking, and integration. A typical analyzer traverses AST nodes to find patterns, uses type information to understand context, and reports issues via the Pass object. The article demonstrates building a simple analyzer that detects empty if blocks, explains how to integrate it with go vet or golangci-lint, and covers the core packages needed for static analysis work.