Call first in an unfamiliar repository, before planning any change. Returns size, languages, call-graph shape (resolution rates, critical depth, the most central symbols by PageRank), the overall score, and the finding count.

Call instead of grepping when you know part of a name but not where it lives. Matches exactly first, then by substring; returns kind, file:line, visibility, and entry-point status for each match, plus the total match count.

Call to jump to where a symbol is defined before reading or editing it. Returns the definition sites with file:line, plus a provenance field saying whether the match was exact (fully qualified), exact (short name), or a substring fallback - so you know how much to trust it.

Call before renaming, changing a signature, or deleting a symbol. Returns resolved_references (exact call-graph edges with file:line) and name_match_references (dynamic or unresolved calls with the same final name) separately, so high- and low-confidence hits stay distinguishable.

Call to answer "who uses this?" one level up. Returns the direct callers with exact call sites (file:line) from the resolved call graph - facts, not guesses. For the full blast radius use impact_of; for dynamic-dispatch hits too use references_of.

Call to understand what a function does without reading its body, or to find its dependencies. Returns resolved callees with call sites, plus the unresolved names (external crates, stdlib) and dynamic calls it makes.

Call before a breaking change to size its blast radius. Returns every symbol that transitively reaches this one and the files they live in - the set that could break if it changes, and the set worth reviewing or testing after. The symbol list is capped at 100; the count and file list are exact.

Call before deleting code, or when asked what is unused. Returns the symbols with no resolved caller, no name-match caller, and no path from any entry point, each with a confidence score - dynamic dispatch and reflection lower it, so check anything below ~0.9 by hand.

Call after finishing an edit, and before telling the user the work is done. Runs the full deterministic audit - security, dead code, duplicates, naming, complexity, infrastructure - and returns the score plus the findings with file:line, severity and a suggested fix. Use min_severity to cut noise. For a diff-sized answer, prefer audit_delta.

Call to judge your own diff, or to review a branch, without wading through pre-existing findings. Returns only the findings in files changed versus a git ref (uncommitted and untracked files included). The whole tree is still analysed, so cross-file facts like dead code stay correct.

Call ONLY when the user asks about performance - it is advisory, not scored, and noisy otherwise. Returns the constructs that hurt the chosen objective (hot-path allocations, locks, unbounded channels, blocking-in-async), ranked by impact, each with locations and a concrete design fix such as a bounded ring buffer in place of an unbounded channel. Tuned for Rust; other languages give limited signal.

Call when changing an API route or a client fetch, or to check a frontend and backend still agree. Matches client HTTP calls (fetch/axios) to the route handlers that serve them across the language boundary, and returns the calls that hit NO route (likely 404s or typos) and the routes NO client calls (possibly dead) - findings a single-language tool cannot produce.

Call before adding a helper, to check one already exists, or when consolidating repeated logic. Returns groups of duplicate implementations - exact, renamed (identifier-insensitive), and structural - each with a canonical pick to keep, the copies to remap onto it, and a confidence score.