Knowledge, Memory & RAG MCP servers

Persistent memory, knowledge graphs, vector databases and RAG pipelines so AI agents remember context across sessions.

1,501 servers · showing 1–48

  1. 1Memorymodelcontextprotocol/memoryKnowledge graph-based persistent memory system.LocalFree92k
  2. 2Context7upstash/context7Up-to-date code documentation for LLMs and AI code editors.Local + RemoteAccount needed64k
  3. 3Hindsightvectorize-io/hindsightHindsight: long-term memory for AI agents modeled on human memory.LocalAccount needed57k
  4. 4Cogneetopoteretes/cognee/cognee-mcpMemory manager for AI apps and agents using graph and vector stores, with ingestion from many data sources.LocalFree33k
  5. 5Mastra/mcp-docsmastra-ai/mastraProvides AI assistants with direct access to Mastra.ai's complete knowledge base.LocalFree29k
  6. 6Skill Seekersyusufkaraaslan/Skill_SeekersTurn docs, GitHub repos, PDFs, videos, Confluence, Notion and Slack/Discord into AI skills and RAG knowledge, exportable to vector databases like Qdrant.LocalFree15k
  7. 7AWS Bedrock KB Retrievalawslabs/mcpQuery Amazon Bedrock Knowledge Bases using natural language to retrieve relevant information from your data sources.LocalFree9.9k
  8. 8Honchoplastic-labs/honchoMemory that reasons: continual learning for stateful agents. Better context, fewer tokens.RemoteAccount needed7.8k
  9. 9Notionmakenotion/notion-mcp-serverNotion official MCP serverLocalFree4.7k
  10. 10Basic Memorybasicmachines-co/basic-memoryLocal-first AI memory: a semantic knowledge graph of Markdown files that humans and LLMs both read and write, with optional cloud sync and team workspaces.LocalAccount needed4.4k
  11. 11RevoGrid DataGridrevolist/revogridToken-free MCP server for structured RevoGrid Core, Pro, and Enterprise knowledge retrieval.RemoteAccount needed3.5k
  12. 12NoteDiscoverygamosoft/NoteDiscoverySelf-hosted Markdown knowledge base with a web UI: search, read, create, edit, tag and template notes.LocalFree2.9k
  13. 13Open Ontologiesfabio-rovai/open-ontologiesOntology engineering for OWL, RDF and SPARQL: validate, query, diff, lint, version and govern knowledge graphs on an Oxigraph triple store.LocalFree2.5k
  14. 14Memantomoorcheh-ai/memantoUniversal memory agent for AI: provides semantic search, namespace management, text/vector operations and RAG for local or remote environments.LocalAccount needed2.4k
  15. 15llmwikiatomicstrata/llm-wiki-compilerCompile documents into a cited knowledge wiki. Retrieve evidence, query, and review via local MCP.LocalFree2.2k7.1k
  16. 16Memory Servicedoobidoo/mcp-memory-serviceMemory service with semantic search, persistent storage and autonomous memory consolidation.LocalFree2.1k
  17. 17IWE (iwe.md)iwe-org/iweMarkdown knowledge base as agent memory. Runs against the notes directory it is started in.LocalFree1.8k
  18. 18Relaticlerelaticle/relaticleOpen-source CRM your AI agents can write to: companies, people, opportunities, tasks and notes.RemoteFree1.8k
  19. 19Deja vuvshulcz/deja-vuLocal memory over session histories from Claude Code, Codex CLI and opencode: lexical search, session-start auto-recall, secret redaction and SSH sync.LocalFree1.3k
  20. 20ApeRAGapecloud/ApeRAGRAG platform combining Graph RAG, vector search and full-text search for building knowledge graphs and context engineering.LocalAccount needed1.3k
  21. 21Nautilus Compass Memorychunxiaoxx/nautilus-compassLocal-first long-term memory for AI agents, with byte-recomputable signed verification receipts.Local + RemoteFree1.3k
  22. 22Local RAGshinpr/mcp-local-ragLocal document search: semantic search over PDF, DOCX, TXT and Markdown files with LanceDB vector storage and local embeddings.LocalFree42618k
  23. 23Chatsumchatmcp/mcp-server-chatsumQuery and summarize your chat messages with AI prompts.LocalFree1k
  24. 24Iai Personal Memory EngineCodeAbra/iai-personal-memory-engineLocal memory daemon with episodic, semantic and procedural tiers, SQLite and hnswlib storage, sleep-cycle consolidation and AES-256-GCM encryption at rest.LocalFree917
  25. 25Projectmemriponcm/projectmemLocal-first memory for coding agents: records issues, failed attempts, fixes and decisions, re-injects them and warns at git commit before a repeated mistake.LocalFree872
  26. 26ThoughtDAGchenxiachan/thoughtdagSearch local AI-agent conversation history by file or exact phrase and recall original source turns through four read-only tools.LocalFree723326
  27. 27Vestigesamvallad33/vestigeLocal-first cognitive agent memory with FSRS-6 scheduling, smart ingest, SQLite storage, portable sync, an embedded dashboard and optional hooks.LocalFree6581.2k
  28. 28DocsAgentdocsagent/docsagentInstant, private access to your knowledge base: Zotero, Obsidian, Apple Notes (macOS).LocalFree579
  29. 29CompartmentMaxFreedomPollard/CompartmentDurable agentic memory, encrypted at rest. Fully offline: no network, no API key, no cloud.LocalFree578
  30. 30MisakaNetIkalus1988/MisakaNetAgent failure memory: search verified debugging lessons from real engineering sessions.LocalFree549
  31. 31Ankiankimcp/anki-mcp-serverMCP server for Anki flashcards: adaptive review, notes, media, and deck management via AnkiConnect.LocalFree539
  32. 32Entrolyjuyterman1000/entrolyContext control layer for coding agents: compression, prompt-prefix stabilization for caching, cheaper-model routing, local hallucination checks and memory.LocalFree480923
  33. 33TelememTeleAI-UAGI/telememMem0-compatible long-term and multimodal agent memory: character-isolated profiles, semantic deduplication, optional local stack and video memory with QA.LocalAccount needed494
  34. 34GraphicleGraphicle-AI/graphicleCode graph and project memory for coding agents, cited to exact files and lines, on your machine.LocalFree482
  35. 35Beever AtlasBeever-AI/beever-atlasTeam knowledge base turning Slack, Discord, Teams and Mattermost chats into a knowledge graph and wiki with cited answers, semantic search and expert finding.LocalFree451
  36. 36Apple NotesRafalWilinski/mcp-apple-notesTalk with your Apple NotesLocalFree417
  37. 37PageIndexVectifyAI/pageindex-mcpReasoning-based RAG system for chatting with long PDFs. Supports local and online files.LocalFree407
  38. 38Graphlitgraphlit/graphlit-mcp-serverIngest content from Slack, Discord, websites, Google Drive, Linear or GitHub into a Graphlit project, then search and retrieve relevant knowledge.LocalAccount needed378
  39. 39MemoryMeshCheMiguel23/MemoryMeshGraph-based memory focused on AI role-play and story generation.LocalFree354
  40. 40Prism Coderdcostenco/prism-coderSession memory for coding agents: local-first recall, drift detection, on-device inference.LocalFree1565.8k
  41. 41tw Legal RAGaa0101181514/tw-legal-ragCitation-guarded retrieval over 22M Taiwan court judgments and administrative interpretationsRemoteAccount needed341
  42. 42Shodh Memoryvarun29ankuS/shodh-memoryCognitive agent memory with Hebbian learning, a three-tier architecture and knowledge graphs, running offline on edge devices.LocalFree316
  43. 43Plurplur-ai/plurOpen, local-first engram memory for AI agents: read, correct, delete; shared over MCP.LocalFree311
  44. 44Engrimtimgordontg/engrimCross-model, local-first episodic memory engine for Claude Code, Cursor, Codex, and Antigravity. SQLite FTS5 (BM25) + 8MB static model2vec CPU embeddings via Reciprocal Rank Fusion; stdio MCP server for durable decisions, budget-capped boot context, and hybrid recall. Zero cloud, zero telemetry.LocalFree303
  45. 45Emuloohad6k/emuloLoads a personal profile mined from your local Claude Code, Codex and OpenCode logs so agents work the way you do.LocalFree302
  46. 46Knowledge RAGlyonzin/knowledge-ragOffline RAG for Claude Code with hybrid BM25 and semantic search, cross-encoder reranking, Markdown-aware chunking and query expansion.LocalFree300
  47. 47ResiMind1105216375-alt/resimindExact polynomial checks, sparse expansion and verified rule memory. Local MCP tools, no model key.LocalFree294
  48. 48Markmapjinzcdev/markmap-mcp-serverConvert Markdown into interactive markmap mind maps with PNG/JPG/SVG export and live browser preview.LocalFree290