MCP servers that ship as code — a repository or a package you install and run locally (usually over stdio). They have no hosted endpoint, so we cannot probe or grade them: instead each one shows its repository, install command, license, stars and when it was last updated.
Collected from GitHub repositories and npm, PyPI, Cargo, Go, Maven, NuGet and RubyGems packages tagged as MCP servers, the official MCP Registry, Docker's MCP catalog, ModelScope, Baidu MCP World, Cline and other public directories; one entry per repository. A server that also offers a hosted endpoint is listed under Remote instead. These entries are not counted in our reachability, verification or readiness statistics.
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MCP server that gives Claude long-term memory as a Neo4j knowledge graph
MIT ★ 1 -
GKG is Pre-indexed code knowledge graph for Claude Code, Codex, Cursor, OpenCode, and Hermes Agent — to save 💰💲, 🌟 Star if you like it! 🌟
MIT ★ 10 -
Neo4j-based knowledge graph MCP server with temporal versioning and semantic search
npm MIT -
Kappa Graph — κ(G). A semantic knowledge graph where knowledge has weight. Extracts concepts, measures grounding strength, preserves disagreement, traces everything to source.
Apache-2.0 ★ 131 -
AI-powered vector knowledge graph MCP server for agents. Supports add node, add edge, semantic node search. By MEOK AI Labs.
pypi MIT License -
Neo4j knowledge graph MCP server with temporal versioning, semantic search, and vector embeddings for Claude AI
MIT ★ 1 -
MCP server enabling persistent memory for Claude through a local knowledge graph
npm MIT -
MCP server for Google's free public Knowledge Graph Search API - search for structured entity information about people, places, organizations, and concepts
MIT ★ 13 -
MCP server for Google's free public Knowledge Graph Search API - search for structured entity information
npm MIT -
rag-knowledge-graph-mcpgithub.com/csoai-org/rag-knowledge-graph-mcpupdated this year
Rag Knowledge Graph automation via MCP. Includes index document, rag query, add graph edge. By MEOK AI Labs.
pypi MIT License -
CPG Knowledge Graph — GSC's SPARKS-classified product, brand, maker, retail and market intelligence, served to AI Agents over MCP. mcp.cpgknowledgegraph.ai
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aging-knowledge-graphgithub.com/GiorgioHuang/aging-knowledge-graphupdated this year
An open, evidence-traceable knowledge graph for healthy aging — Postgres + pgvector, REST + MCP API, natural-language search, and Claude-powered curator/reviewer agents.
MIT -
Manage, analyze, and visualize knowledge graphs with support for multiple graph types including topologies, timelines, and ontologies. Seamlessly integrate with MCP-compatible AI assistants to query and manipulate knowledge graph data. Benefit from comprehensive resource management and version status tracking to enhance your knowledge workflows.
smithery -
knowledge-graph-causal-discovery-mcpgithub.com/apifyforge/knowledge-graph-causal-discovery-mcpupdated this year
Knowledge graph causal discovery over multi-domain research data, delivered through a single Model Context Protocol interface.
MIT -
Wikidata + Google Knowledge Graph MCPno update data
Token-efficient Wikidata search, identity audit, entity resolution and compact fact lookup for AI agents, by DondeGo. This Smithery listing distributes the Local stdio MCP and CLI: requires uv and retains optional Google Knowledge Graph corroboration. Wikidata needs no credentials. Zero-install public remote MCP is also available directly at https://wikidata-knowledge-mcp.revanalex.workers.dev/mcp (Streamable HTTP, no authentication). Remote V1 is read-only and Wikidata-only; Google Knowledge Graph is disabled remotely. Shared hard admission limit: 100,000 HTTP requests per UTC day, resetting at midnight UTC. Bounded tools; best-effort availability. Remote setup, limits and privacy: https://wikidata-google-knowledge-mcp-1be269.gitlab.io/remote/ Independent open-source project. Not affiliated with or endorsed by Google or the Wikimedia Foundation.
smithery -
MCP server for accessing and querying BrainKB’s neuroscience knowledge graph.
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Universal MCP Server: Dynamic SQLite-backed code knowledge graph memory & AST context router for AI agents (Cursor, Claude Desktop, Antigravity, Windsurf).
MIT -
mcp-memory-graphgithub.com/YonasValentin/mcp-memory-graphupdated this year
Local-first memory for Claude Code and any MCP client: hybrid search + knowledge graph in one SQLite file, $0/token, no cloud.
npm NOASSERTION ★ 2 -
knowledge-reduce-coregithub.com/nelslindahlx/knowledge-reduce-coreupdated this year
High-performance Knowledge-RAG pipeline featuring self-correcting LLM critique loops, MLX fine-tuning, real-time watcher daemons, pluggable local KùzuDB/cloud Neo4j graph stores, and an interactive 3D WebGL dashboard.
NOASSERTION -
YATS — Knowledge graph for AI coding agents. Cut code-reading tokens by 37–73%. Works with Codex, Claude, Copilot, Cursor & Gemini.
NOASSERTION -
Advanced Knowledge Graph Engine with Document Processing, Semantic Search and Multi-LLM Integration
pypi MIT License -
MCP Memory Server with Neo4j backend for AI knowledge graph storage
npm MIT -
Local personal knowledge graph: plain-English facts → typed graph → context snapshot for any AI chat. Ollama, SQLite, MCP server. Paused; experiment write-up inside.
MIT -
claude-graphgithub.com/mohansagark/claude-graphupdated this year
Local-only knowledge graph of your codebase for Claude Code — Tree-sitter + SQLite + MCP, zero network calls ever
MIT ★ 1 -
MCP server wrapping knowledge-gun. Exposes paste-ready knowledge-graph context bundles as tools any MCP-aware LLM client can call.
MIT -
Local-first knowledge graph memory for LLMs and AI agents: MCP server, RAG context, provenance
pypi MIT -
The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowledge graphs
pypi MIT ★ 5,355 -
Evidence-first entity and knowledge graph MCP server for AI agents to verify claims, trace cryptographic provenance, and retrieve 90% less context.
MIT ★ 1 -
graph-xgithub.com/vugarfamiloglu/graph-xupdated this year
Local knowledge graph for any project: zero-dependency indexer + 7-tool MCP server for Claude Code + live neumorphic graph UI. Cuts Claude token usage 8-10x.
MIT -
MyKG Knowledge Graph Engine: Turn raw files into knowledge graphs with induced ontology
MIT ★ 85 -
Turn a codebase into a deterministic AST knowledge graph (no embeddings, no LLM) and serve it over MCP, so coding agents ask the graph instead of grepping.
MIT -
hermit-graphgithub.com/kimbapquyenduy/hermit-graphupdated this year
Persistent memory for AI coding agents. Knowledge graph with 4-tier taxonomy, confidence scoring, and MCP protocol support for Claude Code, Cursor, Gemini CLI, Windsurf, Cline, Codex, and OpenCode.
npm MIT -
Native Code Knowledge Graph plugin for Google Antigravity (AGY) powered by Tree-sitter AST, SQLite & code-review-graph. Features 22+ MCP tools, 9 workflow skills & deterministic zero-lag incremental indexing.
MIT -
Sibyl daemon - knowledge graph and task workflow server
pypi Apache-2.0 -
claude-graphgithub.com/mohansagark/claude-graphupdated this year
Local knowledge graph for Claude Code — call graphs, impact radius, and code search via MCP, powered by Tree-sitter and SQLite. Supports Python, JS/TS, Go, Rust, Java, C#, Ruby, C/C++, Swift and more.
pypi MIT -
Personal knowledge system — MCP server with PostgreSQL semantic search and temporal knowledge graph
NOASSERTION ★ 1 -
Local-first personal knowledge management (PKM) MCP server and learning memory for every AI tutor—goal trees, a reusable knowledge graph, and evidence-gated mastery.
Apache-2.0 -
nexus-kbgithub.com/KhaiTrang1995/nexus-kbupdated this year
Nexus-KB is an open-source reference architecture for building a production-grade enterprise Retrieval-Augmented Generation (RAG) and Knowledge Graph (KG) engine.
MIT ★ 1 -
ak-hivemind-mcpgithub.com/your-org/ak-hivemind-mcpupdated this year
HiveMind MCP Server — shared knowledge graph for AI agents. Query, write, and inspect collective AI knowledge through the Model Context Protocol.
npm MIT -
MCP server for entity SEO: find, rank and compare Google Knowledge Graph entities, audit knowledge panel readiness, map Wikidata connections and generate JSON-LD schema. Works with Claude, Cursor and VS Code.
MIT ★ 2 -
AI Memory & Knowledge Management MCP Server — 32 tools, BM25 R@5=95%, hybrid search (RRF), knowledge graph, analytics, cloud sync, Obsidian compatible. Works with Claude Code, Cursor, Gemini CLI, Windsurf, hermes-agent.
npm MIT -
Local-first Open Knowledge Format validator, graph index, CLI, and MCP stdio server.
npm MIT -
A TypeScript-based MCP server implementing a memory system inspired by neurodivergent cognitive styles. It organizes thoughts into five districts (knowledge domains), ranks search results using BM25 semantic ranking, and stores memories as a persistent knowledge graph with bidirectional connections.
MIT ★ 26 -
fish-bridge-mcpgithub.com/makeamouse/fish-bridge-mcpupdated this year
Session-scoped knowledge graph engine for AI chat context compression
pypi MIT -
Persistent knowledge graphs with WikiLinks and vector search. MCP server that transforms ephemeral AI sessions into continuous collective intelligence.
npm MIT -
Self-hosted knowledge graph memory for developers and AI agents. MCP server, interactive graph UI, automatic indexing.
NOASSERTION -
Vinc for the desktop: a knowledge graph you and your AI assistants share. Downloads live in Releases.
NOASSERTION -
wiki-vaultgithub.com/yogsoth-ai/wiki-vaultupdated this year
Knowledge Vault MCP Server — structured wiki with BM25 search, typed knowledge graph, batch validation, and companion skills for autonomous knowledge compilation.
Apache-2.0 ★ 5 -
Distill AI coding sessions (Claude Code / Codex / Cursor) into weekly reports, ADRs, incident reviews and a knowledge graph — local-first, evidence-linked.
MIT ★ 4 -
springgraphgithub.com/jinglonglong/springgraphupdated this year
Spring Cloud code knowledge graph and MCP server for AI coding agents
MIT ★ 8 -
Temporal Knowledge Graph System for Architectural Memory - Track decisions, patterns, and failures with MCP integration for Claude Code/Desktop
MIT ★ 4 -
Next Generation MCP service to query the NSF Open Knowledge Network Knowledge Graphs
BSD-3-Clause ★ 6 -
remembrallmcpgithub.com/roboticforce/remembrallmcpupdated this year
Whole-codebase knowledge for AI coding agents. A field-aware code graph (functions, classes, methods, fields, references) plus persistent memory. Rust, Postgres + pgvector, MCP.
★ 34 -
AI Intelligence Platform -- knowledge graph + semantic search + reasoning + multi-agent debate in a single binary
NOASSERTION ★ 20 -
Shared graph vault knowledge for your agents
★ 3 -
Enargeia turns scattered Windows documents into a verifiable knowledge graph – without moving a single file.
Apache-2.0 -
graphmemorygithub.com/graph-memory/graphmemoryupdated this year
MCP server that builds a semantic graph memory from your project — indexes docs, code, and files, exposes 50+ tools for search, knowledge, tasks, and skills.
NOASSERTION ★ 14 -
Self-hosted team knowledge base with a desktop app, knowledge graph and semantic search — shared with Claude through MCP.
Apache-2.0 ★ 3 -
A personal knowledge graph for notes, meetings, and emails, with semantic search and cited answers.
MIT ★ 17 -
kgngithub.com/baobab00/kgnupdated this year
Knowledge graph CLI + MCP server for AI agents — PostgreSQL/pgvector backed with multi-agent task orchestration, conflict detection, and GitHub sync
MIT