Agent Memory
RetainDB
Hybrid retrieval memory with quality filtering for coding agents.
Memory infrastructure for AI agents with hybrid retrieval combining vector search, BM25, and reranking.
Use RetainDB when you need durable cross-session memory for coding agents with built-in noise filtering and signal reinforcement.
Best for
- hybrid retrieval
- session handoffs
- memory quality filtering
Not ideal for
- simple key-value caching
- teams that don't need noise filtering
Core concepts
hybrid retrievalBM25rerankingsignal-based scoring
Minimal implementation shape
Capture and structure agent memories with hybrid retrieval, filter by signal relevance, and hand off session context across coding agents.