searching-codebases

Find code by regex pattern or natural language concept in any codebase. Auto-routes between n-gram indexed regex search (2-20x faster than ripgrep) and TF-IDF semantic search. Expands results to full functions via AST maps. Accepts GitHub URLs, local directories, uploaded files/archives, or project knowledge. Use when asked to find implementations, search for patterns, explore unfamiliar repos, or answer "where is X" / "how does Y work" about code. Triggers on "search this repo", "find where X is", "grep for", "what handles Y", regex patterns, or natural-language questions about code.