Knowledge Graph
RAG pipelines, knowledge bases, embeddings, vector retrieval.
100 MCP servers in this category
- #01memoryOfficial★ 85,74877
An MCP server implementing persistent memory using a local knowledge graph for AI models to remember user information across chats.
- #02ruflo★ 51,79564
Multi-agent orchestration platform for Claude Code with MCP server integration, enabling coordinated AI swarms and autonomous workflows.
- #03Skill_Seekers★ 13,58161
A comprehensive MCP server that converts documentation, GitHub repos, and PDFs into Claude AI skills with automatic conflict detection.
- #04OpenMetadata★ 13,93559
OpenMetadata provides an MCP server for AI assistants to access unified metadata context for data discovery, governance, and lineage.
- #05codebase-memory-mcp★ 2,36358
High-performance code intelligence MCP server that indexes codebases into a persistent knowledge graph with sub-ms queries and 155 language support.
- #06mcp-memory-service★ 1,84856
Persistent memory service for AI agents with REST API, MCP, OAuth, and knowledge graph functionality.
- #07contextplus★ 1,89656
Context+ is an MCP server that transforms codebases into searchable feature graphs using RAG, AST parsing, and semantic linking.
- #08korean-law-mcp★ 1,73256
Korean legal MCP server transforming 41 government APIs into 17 tools with citation verification, impact mapping, and time comparison.
- #09deep-research★ 4,58356
An MCP server for deep research using multiple LLMs with web search capabilities and local processing.
- #10mcp-notion-server★ 89255
MCP server for connecting Notion to MCP-compatible clients, enabling AI agents to find, read, query and update Notion workspaces.
- #11cupertino★ 74255
A Swift-based MCP server that indexes and serves Apple's developer documentation to AI agents.
- #12nocturne_memory★ 1,08055
A long-term memory server for MCP agents that enables persistent, cross-session identity and context.
- #13antigravity-workspace-template★ 1,21955
Multi-agent knowledge engine that turns any codebase into a queryable AI assistant with MCP integration.
- #14zotero-mcp★ 78454
Zotero MCP plugin integrates AI assistants with Zotero reference management via MCP protocol, providing search, annotation analysis, content extraction, and write operations.
- #15roam-code★ 46154
A local codebase intelligence CLI and MCP server that analyzes code structures, dependencies, and patterns to provide actionable insights for developers and AI agents.
- #16mcp-nixos★ 63954
MCP-NixOS provides real-time NixOS package, option, and documentation data to prevent AI hallucinations.
- #17memorix★ 44953
Open-source cross-agent memory layer for coding agents via MCP with local-first storage.
- #18zen★ 1,08553
Selfhosted notes app with MCP integration for searching, listing and reading notes.
- #19biomcp★ 50753
BioMCP is a biomedical-focused MCP server that provides unified access to multiple biomedical data sources through a single command interface.
- #20memora★ 40553
A lightweight MCP server for semantic memory storage, knowledge graphs, and persistent memory for AI agents.
- #21vestige★ 53153
Cognitive memory for AI agents with FSRS-6 spaced repetition, 29 brain modules, and a 3D visualization dashboard.
- #22haiku.rag★ 52453
Agentic RAG with multimodal search, analysis agents, and MCP server capabilities.
- #23Ori-Mnemos★ 30152
Local-first persistent memory system for AI agents with recursive memory harness and MCP integration.
- #24obsidian-mcp-server★ 52552
MCP server for Obsidian vaults with 14 tools for reading, writing, searching, and editing notes, tags, and frontmatter.
- #25wikipedia-mcp★ 25052
An MCP server providing Wikipedia access with search, article retrieval, summaries, and multi-language support.
- #26arkon★ 72952
Enterprise AI knowledge hub serving as MCP server for secure organizational RAG contexts and AI skills.
- #27minima★ 1,04852
Minima is an on-premises RAG system with MCP integration for secure local document querying.
- #28octocode★ 37652
MCP server that transforms codebases into searchable knowledge graphs with semantic search and structural understanding.
- #29mcp-neo4j★ 94752
Neo4j Labs MCP servers integrate graph databases with AI assistants through natural language.
- #30obsidian-mcp-tools★ 81152
An MCP server that bridges Obsidian vaults with AI assistants like Claude for semantic search and template execution.
- #31llmwiki★ 90852
LLM Wiki is an MCP server that indexes local documents and enables Claude to build and maintain a knowledge wiki.
- #32NornicDB★ 73452
NornicDB is a distributed graph+vector database with native MCP server support for AI applications.
- #33shodh-memory★ 21251
Persistent cognitive memory for AI agents and robots with offline support and 37 MCP tools.
- #34graphlit-mcp-server★ 37551
MCP server connecting Graphlit platform with rich tools for knowledge management and RAG across various data sources.
- #35pasal★ 23651
MCP server providing grounded access to Indonesian legal data with search, article retrieval, and status checking tools.
- #36claude-code-skills★ 46551
A comprehensive plugin suite with bundled MCP servers for Claude Code, including hex-line, hex-graph, hex-ssh, and hex-research for enhanced code intelligence.
- #37swarmvault★ 45451
SwarmVault is an MCP server that turns documents into a local knowledge graph with RAG capabilities.
- #38jdocmunch-mcp★ 17151
MCP server for efficient documentation exploration via structured section indexing, reducing token consumption by 95% compared to traditional approaches.
- #39mcp-logseq★ 26751
An MCP server connecting Claude to LogSeq knowledge bases with read/write capabilities and optional vector search.
- #40beever-atlas★ 32850
Beever Atlas is an MCP server that transforms team chats into a self-maintaining wiki with integrated search and QA capabilities.
- #41turbovault★ 12650
Rust SDK and MCP server that transforms Obsidian vaults into intelligent knowledge systems with 47 specialized tools.
- #42mcp-outline★ 14750
MCP server that connects AI assistants to Outline documentation platforms with comprehensive document and collection management tools.
- #43anytype-mcp★ 42050
MCP server for AI assistants to interact with Anytype's encrypted wiki through natural language commands.
- #44MegaMemory★ 16850
MegaMemory is an MCP server that creates persistent project knowledge graphs with semantic search for coding agents.
- #45raindrop-mcp★ 16350
MCP server for Raindrop.io bookmark management with comprehensive tools for organizing, searching, and editing bookmarks through AI assistants.
- #46yantrikdb-server★ 14350
Cognitive memory database for AI agents that consolidates duplicates, detects contradictions, and fades stale memories via temporal decay.
- #47Corbell★ 20850
MCP server providing architecture graph intelligence, code search, and spec generation tools for backend teams.
- #48context-sync★ 12450
Local persistent memory store for LLM applications providing project continuity through MCP tools.
- #49ckb★ 9550
CKB is a comprehensive code intelligence platform providing MCP server with tools for code analysis, impact assessment, and architecture mapping.
- #50memtrace-public★ 16950
Memtrace provides structural memory for AI coding agents through MCP, indexing codebases as bi-temporal knowledge graphs with zero LLM calls.
- #51LeanKG★ 18850
LeanKG is a local-first knowledge graph that indexes codebases and exposes them via MCP for AI-assisted development with significant token savings.
- #52Axon.MCP.Server★ 16550
MCP server that transforms codebases into intelligent knowledge bases for AI IDEs like Cursor and AntiGravity with semantic analysis and vector search.
- #53scholar-search-mcp★ 18050
MCP server for academic paper search integrating Semantic Scholar and arXiv with practical research tools.
- #54affine-mcp-server★ 16650
Comprehensive MCP server for AFFiNE, exposing 84 tools for workspace, document, and database operations over stdio or HTTP.
- #55ClawMem★ 16850
On-device memory layer for AI agents with MCP server integration and hybrid RAG search.
- #56memex★ 20149
Zettelkasten-based persistent memory system for AI coding agents with MCP server integration.
- #57remindb★ 9349
Remindb is an agentic memory database that cuts session tokens by 75–99% using a portable SQLite file with MCP tool integration.
- #58arbor★ 11749
A graph-native code intelligence tool with 10 MCP tools for analyzing code dependencies and impact.
- #59memento-mcp★ 41849
Knowledge graph memory system with semantic retrieval and temporal awareness for LLMs.
- #60LycheeMem★ 23449
LycheeMemory is a lightweight long-term memory framework for LLM agents that supports MCP as an HTTP server.
- #61ogham-mcp★ 10449
Ogham MCP is a persistent, searchable shared memory system for AI coding agents across clients.
- #62MediaWiki-MCP-Server★ 9349
MCP server connecting AI with MediaWiki wikis through tools and resources for reading and writing content.
- #63RivalSearchMCP★ 8949
RivalSearchMCP is a comprehensive research MCP server offering deterministic search across 5 web engines, 9 social platforms, academic databases, news sources, and document analysis.
- #64joplin-mcp★ 11249
A FastMCP-based server enabling AI assistants to interact with Joplin notes via 25 optimized tools.
- #65omem★ 19649
Persistent memory system for AI agents with MCP Server plugin enabling cross-agent knowledge sharing.
- #66open-ontologies★ 11049
AI-native ontology engine Rust MCP server with 43 tools for building, validating, and querying RDF/OWL ontologies using Oxigraph triple store.
- #67prism-coder★ 13349
MCP server providing persistent memory, semantic search, and local LLM for AI agents.
- #68mengram★ 16748
Mengram is a human-like memory system for AI agents with semantic, episodic & procedural memory that learns from failures.
- #69home-memory★ 7548
Home Memory is an MCP server that provides structured, persistent knowledge about your home through natural language interactions.
- #70medical-mcp★ 9048
Medical MCP provides trusted medical data from FDA, WHO, PubMed, RxNorm, and Google Scholar with no API keys required.
- #71getnote-mcp★ 6148
MCP server for GetNote, a personal note management tool, enabling AI to create, edit, search and organize notes.
- #72Zikkaron★ 5948
Biologically-inspired persistent memory engine for Claude Code with 26 cognitive subsystems, local SQLite storage, and advanced memory recall capabilities.
- #73samyama-graph★ 6248
High-performance graph-vector database with MCP server support for natural language queries over knowledge graphs.
- #74remote-mcp-server★ 16048
Enterprise MCP server providing secure access to company knowledge, documents, and expertise.
- #75arxiv-latex-mcp★ 13148
MCP server enabling LLMs to access and process arXiv papers via original LaTeX source for better math handling.
- #76omega-memory★ 13848
Cross-model memory system for AI agents that persists across sessions with MCP server support.
- #77atlas-mcp-server★ 47548
A Neo4j-powered MCP server implementing three-tier project/task/knowledge management for LLM agents with deep research capabilities.
- #78kept★ 8348
Kept is an MCP server that manages AI conversations as searchable Markdown files in a local vault.
- #79MakerAi★ 17348
MakerAI is a complete AI ecosystem for Delphi with MCP server/client support, RAG, and autonomous agents.
- #80mcp-bsl-platform-context★ 16548
MCP server providing 1C:Enterprise platform syntax and object model reference for AI assistants.
- #81mem0-mcp-selfhosted★ 8448
A self-hosted mem0 MCP server that integrates with Qdrant, Neo4j, and Ollama for persistent memory management with Claude Code.
- #82ServiceGraph★ 16048
An MCP server providing access to 100k+ US professional services firms with industry-specific search tools.
- #83sverklo★ 5448
Sverklo is a local-first MCP server providing code intelligence with symbol graphs, blast-radius analysis, and git-pinned memory.
- #84academia_mcp★ 8947
Academia MCP server provides tools for searching, fetching, and analyzing scientific papers and research datasets.
- #85roampal★ 12047
Roampal is an AI memory system with MCP integration that learns from user feedback across conversations.
- #86mcp-server★ 9647
MCP server for AI-assisted development of CAP applications with model and documentation search capabilities.
- #87ols4★ 8947
EMBL-EBI's Ontology Lookup Service provides an MCP server for biomedical ontologies via REST API.
- #88vectorize-mcp-server★ 10647
Vectorize MCP server enables vector search, text extraction, and deep research through the Model Context Protocol.
- #89BloodHound-MCP-AI★ 35347
MCP server connecting BloodHound with AI for natural language Active Directory security analysis.
- #90sparql-llm★ 10847
MCP server that helps LLMs generate and validate SPARQL queries for biological knowledge graphs.
- #91openrouter-deep-research-mcp★ 5047
Multi-agent research MCP server with async agents, semantic search, and persistent knowledge base.
- #92Cortex★ 3447
Cortex is a neuroscience-based persistent memory system for Claude Code with 47 MCP tools that remembers context, decisions, and patterns across sessions.
- #93gograph★ 11847
A local AST/type-aware Go repository context indexer that creates optimized graphs for AI coding agents.
- #94MCP-BOE★ 3947
MCP server providing access to Spanish BOE legislation, daily summaries, and official documents via MCP and REST API.
- #95mcp-server-atlassian-confluence★ 5447
MCP server connecting AI assistants to Atlassian Confluence knowledge bases with API tools for spaces, pages, and search.
- #96mcptube★ 10447
MCP server that transforms YouTube videos into a persistent knowledge base with transcripts, vision analysis, and agentic search.
- #97evernote-mcp-server★ 5147
Evernote MCP server for accessing notes via OAuth, with Docker support and recent updates.
- #98gistpad-mcp★ 19247
MCP server for managing knowledge, notes and prompts via GitHub Gists with extensive tooling for gist operations.
- #99mcp-agent★ 8547
A modular Python MCP framework integrating LLMs with tools, weather data, and advanced RAG capabilities.
- #100Ombre-Brain★ 9447
An emotional memory system for Claude using Russell's valence/arousal coordinates with MCP protocol integration.