List all exported symbols (functions, classes, types, consts) from a file or folder. Returns name, signature, file, line number, and total file lines. Use this instead of reading a whole file to discover what it contains.

Get a structural outline of a single file: every function, class, interface, type, enum, and top-level const with line ranges. Shows both exported and non-exported symbols. Use to understand file structure before reading a specific region.

Read a specific line range from a file (max 200 lines per call). Returns numbered source lines. Use after list_exports or file_outline to read only the code you need instead of the whole file.

Find all references to a symbol (function, class, variable, type) across a directory using ripgrep. Returns file, line, and matching text. Use to trace call chains and understand usage before modifying.