Tools that reason about your Apex no longer have to parse it themselves.
Where
Tooling API, as a new REST resource.
How
Query the Symbol API for an Apex type and get back its members, signatures and relationships straight from the compiler's view, always in sync with the current Apex version. Intended consumers are IDE extensions, code completion engines and AI agents that need reliable context about classes in an org.
Why
Grammar-based parsing breaks every time Apex evolves and misses org-specific context. Compiler-grade symbols mean better completions in editors and fewer hallucinated method names from AI assistants. Beta in Winter '27.