List registered repository IDs only. Call this first; roots are never exposed.

Return ranked definitions for a repo_id from list_repositories within a bounded context budget. Compact entries are [short_id, path:line, kind/name, optional rank marker]; request format='full' for signatures, per-symbol evidence, and detailed rank_basis. Use for orientation, not proof of full coverage.

Find source-backed symbols by name or qualified-name fragment. Returns IDs and spans, never arbitrary files.

Return Tree-sitter-extracted lexical import relationships for one indexed path or module. This is not semantic import resolution or lexical call-graph inference; dynamic imports are flagged rather than resolved.

Search indexed symbol bodies with FTS5 and return bounded source snippets, symbol IDs and line evidence.

Return imports and source-backed headers from one indexed repository-relative file. Function bodies are elided by default.

Return a bounded source packet around one indexed symbol and observed graph edges. Use original source when body, freshness or ambiguity requires it.

Traverse observed caller/callee edges from a symbol. It is a candidate impact slice, never a proof of complete blast radius.

Return active snapshot metadata and paths changed since indexing. Run before relying on graph results.