Chroma + BM25 fused with Reciprocal Rank Fusion. Three pluggable strategies (simple / multi_query / hybrid). Multi-profile isolation.
Graph
NetworkX knowledge graph with JSON persistence. Multi-hop traversal with optional relation filters; Neo4j plug-in ready.
Database (NL2SQL)
SQLite and MySQL out of the box (Postgres via one provider file). Three-layer safeguard keeps read-only truly read-only.
Skills
SDK-style .claude/skills//SKILL.md manifests for knowledge skills; safe Python code skills (calculator, unit conversion, …).
Memory (scope-typed v0.3)
Three scopes (global / profile / session) plus typed kinds. Short-term rolling window + SQLite long-term with cosine recall + live LLM fact extraction.
