Retrieve errors, warnings, and code hints for a file or the whole workspace. Use to check syntax/type errors after edits, before and after refactoring.

Jump from a symbol position to its declaration/definition. Returns target file path, line, column, and optional surrounding code snippet.

Find all references and usages of a symbol across the workspace. Returns file locations and compact line numbers. Use to assess impact of changes.

Rename a symbol across all workspace files via LSP. By default (apply=False), generates and returns a unified preview diff without modifying files. Requires apply=True AND writeChanges enabled in config to actually write changes to disk.

Retrieve outline of classes, methods, functions, and properties in a file. Use to quickly understand file architecture without reading all lines. Struct fields and enum members are collapsed into 'fields_count' by default unless include_fields=True.

Search for classes, methods, interfaces, and variables across the entire workspace. Much faster and more accurate than text search.

Inspect type definitions, documentation strings, and signatures at a cursor position. Use to check parameter types, return values, and docstrings.

Prepare a function or method for call hierarchy inspection. Verifies if the symbol supports call graphs.

Trace caller/callee relationships for a function or method. direction='incoming' returns callers; direction='outgoing' returns called functions.

Inspect class and interface inheritance hierarchy. direction='supertypes' returns base classes/interfaces; direction='subtypes' returns derived types.

Show status of all Language Server processes, active workspace root, process IDs, restart counts, and error summaries.