retrieval MCP servers & tools

Durable hybrid memory for AI agents. Combines vector search, BM25, temporal retrieval, and optional Memgraph knowledge graph via reciprocal rank fusion. 6 MCP tools: health, search, answer, feedback, graphquery, graphaddtriple. Self-hosted with Qdrant backend. 82.5% strict accuracy on LoCoMo benchmark. pip install 'mnemostack[mcp]'

Private-by-default memory and context layer for agents with Go/Rust runtime, staged retrieval across fused data backends, and long-horizon context continuity.

Persistent memory MCP server. 25 tools, BM25+MMR+OOD retrieval, CFR-21 audit, knowledge graph.

Persistent memory for AI agents with Ebbinghaus forgetting-curve decay, hybrid BM25+vector retrieval, and entity graph for multi-hop reasoning. Memories auto-prune by importance and recall rate. Built-in browser dashboard, multi-agent support, and yourmemory ask for zero-API-call local queries. pip install yourmemory

Persistent memory MCP server with OS-style demand paging, kswapd-style eviction, and mlock pinning. Multi-agent shared SQLite store with BM25 + FTS5 retrieval, importance scoring, and capacity-aware reclaim. 5 tools: memorylookup, pinmemory, unpinmemory, memorystats, listpinned. uvx --from git+https://github.com/soolaugust/0CompactMem memory-os

Black-box flight recorder for RAG retrieval inside MCP agents. Logs chunks, scores, sources and rankings so you can audit, replay and diff retrieval runs.

Local, append-only knowledge storage with selective retrieval for language models.

Deterministic multi-hop graph retrieval for RAG. Zero LLM calls in the query path.

Embedded, local-first memory and retrieval for AI agents. One SQLite file, no server, no API key.

Retrieve context from your Ragie (RAG) knowledge base connected to integrations like Google Drive, Notion, JIRA and more.

Vault-native, accountable memory for Claude Code and any MCP client. Markdown is the source of truth, no LLM on the Stop path, redaction before every derived store.

Identity substrate for agents: not an agent, not a memory API. It dreams. Context outlives windows.

Private Agent memory and human-reviewed shared knowledge.

Recall locally stored agent memories through an MCP-compatible host.

Universal persistent memory and knowledge retrieval layer for AI agents and LLMs.

Explainable graph-retrieval memory engine with an RL-trained management policy.

Find, ground, evaluate, and selectively retain AI research through one local-first MCP.