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MCP servers tagged knowledge-graph
208 live MCP servers tagged "knowledge-graph", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with knowledge-graph.
apecloud/ApeRAG
ApeRAG: Production-ready GraphRAG with multi-modal indexing, AI agents, MCP support, and scalable K8s deployment
Yams
Persistent memory for LLMs and apps. Content-addressed storage with dedupe, compression, full-text and vector search.
obsidian-plugin
High-performance Model Context Protocol (MCP) server for Obsidian that provides AI tools with direct vault access through semantic operations and HTTP transport.
Ols4
The EMBL-EBI Ontology Lookup Service (OLS)
Claude Code Buddy
MeMesh Plugin — Searchable project memory plugin for Claude Code.
entanglr/zettelkasten-mcp
A Model Context Protocol (MCP) server that implements the Zettelkasten knowledge management methodology, allowing you to create, link, explore and synthesize atomic notes through…
Memory Libsql
🧠 High-performance persistent memory system for Model Context Protocol (MCP) powered by libSQL. Features vector search, semantic knowledge storage, and efficient relationship mana…
Cortex Scout
An advanced web extraction and meta-search engine for AI agents. It features native parallel searching, Human-in-the-Loop (HITL) authentication fallback, and LLM-optimized data sy…
Mie
Persistent memory graph for AI agents. Facts, decisions, entities, and relationships that survive across sessions, tools, and providers. MCP server — works with Claude, Cursor, Ch…
Memory Journal MCP
MCP server for AI Context + Project Intelligence. Overcome disconnected AI sessions with persistent project memory, triple search, knowledge graphs, and GitHub integration (Action…
Megamemory
Persistent project knowledge graph for coding agents. MCP server with semantic search, in-process embeddings, and web explorer.
omega-memory/omega-memory
Persistent memory for AI coding agents
Grafeo MCP
Exposes Grafeo as a set of MCP tools so that AI agents and assistants can query, traverse and mutate graph data.
Neo4j
MCP Memory Server with Neo4j backend for AI knowledge graph storage
Google Knowledge Graph MCP
MCP server for Google's free public Knowledge Graph Search API - search for structured entity information about people, places, organizations, and concepts
jcdickinson/simplemem
SimpleMem: Efficient Lifelong Memory for LLM Agents — Text & Multimodal
server
EdegQuake 🌋 High-performance GraphRAG inspired from LightRag written in Rust; Transform documents into intelligent knowledge graphs for superior retrieval and generation
Pentestagent
PentestAgent is an AI agent framework for black-box security testing, supporting bug bounty, red-team, and penetration testing workflows.
Code Review Graph
Local knowledge graph for Claude Code. Builds a persistent map of your codebase so Claude reads only what matters — 6.8× fewer tokens on reviews and up to 49× on daily coding task…
MemMachine
Universal memory layer for AI Agents. It provides scalable, extensible, and interoperable memory storage and retrieval to streamline AI agent state management for next-generation…
Fabric
Fabric MCP server — code intelligence, governance rules, and cloud-sync disaster recovery over a local codebase index
Graphify
Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local determi…
Pipeshub AI
PipesHub is a fully extensible and explainable workplace AI platform for enterprise search and workflow automation
Omnigraph
Lakehouse native graph engine with git-style workflows
SAG
An out-of-the-box document retrieval workbench built on SAG
Hyper Extract
Hypergraph is more powerful. Transform unstructured text into structured knowledge with LLMs. Graphs, hypergraphs, and spatio-temporal extractions — with one command.
Siyuan
A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.
Repobrain
🧠 RepoBrain (formerly Antigravity) — Give your repo a brain. ChatGPT for your codebase: works in Claude Code, Cursor, Codex, Windsurf & more.
Intelligent Audit System
Enterprise audit agent workspace with Agentic RAG, governed tool use, evaluation harness, memory, and human-review delivery workflows.
Ummon
The semantic layer for software engineering: Connect code to meaning, build on understanding
Mem0 MCP Selfhosted
Self-hosted mem0 MCP server for Claude Code. Run a complete memory server against self-hosted Qdrant + Neo4j + Ollama while using Claude as the main LLM.
think-tank
Structured thinking and knowledge management tool for Model Context Protocol
Branch Thinking MCP
Branch-Thinking MCP Tool A TypeScript-powered MCP server for managing parallel branches of thought, semantic cross-references, and persistent tasks. Features dynamic scoring, AI-g…
SkillNet
Create, Evaluate, and Connect AI Skills
LinkedDataHub
The low-code Knowledge Graph application platform. Apache license.
Lumina Note
Lumina Note - A modern Markdown note-taking app with live preview, bidirectional links, and AI assistant
Intellectual Dna
Personal knowledge system: MCP brain server, LanceDB vectors, 70+ pipelines for querying AI conversation history
Neuralmemory
Persistent Knowledge Graph Memory for AI Coding Agents. Adds long-term context (goals, strategies, preferences) to Cursor, Windsurf, & VS Code via MCP.
Obsidian AI Curator
Smart note consolidation for Obsidian using Claude AI. Automatically identifies and merges scattered fragments into structured knowledge via MCP. Like Tetris for your thoughts…
Memory Agent Hub
2026 swarm Agent 年，swarm Agent 、Agent team、 ai coding、skill、memory、evolve、agentic RL 等 AI Agent集合
Memory Visualizer
Interactive visualizer for Anthropic's Memory MCP knowledge graphs. Instantly explore, debug, and analyze entities, relations, and observations from memory.json files in the Model…
g1itchbot8888-del/agent-memory
A graph-native memory system for AI agents and context graphs. Store conversations, build knowledge graphs, and let your agents learn from their own reasoning — all backed by Neo4…
Dkg MCP Server
[Model Context Protocol (MCP)](https://modelcontextprotocol.io) server for DKG V10. Exposes DKG node capabilities as MCP tools, allowing AI assistants (Cursor, Claude Desktop, etc…
MyAgentHubs/aimemo
dependency MCP memory server. Single binary, 100% local, no Docker.
kg-cli
Kappa Graph — κ(G). A semantic knowledge graph where knowledge has weight. Extracts concepts, measures grounding strength, preserves disagreement, traces everything to source.
Ori Mnemos
Local-first persistent agentic memory powered by Recursive Memory Harness (RMH). Open source must win.
Corbell
AI-powered spec generation and review using multi-repo code graph intelligence for backend teams that ship to production.
Corpusos
Open-source protocol suite standardizing LLM, Vector, Graph, and Embedding infrastructure across LangChain, LlamaIndex, AutoGen, CrewAI, Semantic Kernel, and MCP. 3,330+ conforman…
Grafeo
Grafeo is a pure-Rust, high-performance graph database that can be embedded as a library or run as a standalone database, with optional in-memory or persistent storage. Grafeo sup…
Swarmvault
Inspired by Karpathy's LLM Wiki. Local-first LLM knowledge base compiler (Claude Code, Codex, OpenCode, OpenClaw). Turn raw research into a persistent markdown wiki, knowledge gra…