Capabilities

Surfaces

Surface	Identity
MCP	io.github.SylphxAI/locus, stdio by default, npx -y @sylphx/locus --root=/absolute/path
CLI launcher	locus
Engine	Rust crate coderag-core, engine name coderag-core

@sylphx/coderag is the old TypeScript library. It is not this server.

Owned

Capability	Tool	What comes back
Ranked chunk search	codebase_search	Path, lines, symbol, BM25 components, chunk text. Route rust-tfidf is the historical id of this BM25 path.
Related chunks	find_related	Token overlap from a known repo-relative path and line. Route rust-related.
Local index	both tools, before they search	.locus/rust-index.json and .locus/file-hashes.json. .coderag/ is read only when the .locus index is absent.

Not owned

Embeddings, hybrid rank, synonym expansion, file watching, cross-repo search, gitignore, tree-sitter, SQLite, token budgets, and architecture claims. warnings and gaps are present and empty. Locus does not fill them with staleness or language coverage.