"An overview of temporal knowledge graphs" matching MCP servers:

• Vreme Temporal MCP

  stefanveliki

  A

  license

  A

  quality

  C

  maintenance

  Provides AI assistants with rich temporal intelligence including timezone conversions, 9 cultural calendars (Hebrew, Islamic, Chinese, etc.), astronomical events, Islamic prayer times, and context-aware activity appropriateness recommendations.

  Last updated 2025-11-30

  3

  58

  MIT

• Temporal Cortex MCP

  temporal-cortex

  A

  license

  A

  quality

  A

  maintenance

  Calendar MCP server with atomic booking, conflict prevention, deterministic RRULE expansion, and TOON token compression for AI agents.

  Last updated 2026-04-21

  18

  8

  MIT

• Temporal Awareness MCP Server

  pmbstyle

  A

  license

  -

  quality

  C

  maintenance

  A Model Context Protocol (MCP) server that provides AI agents with comprehensive temporal awareness and time calculation capabilities.

  Last updated 2025-07-18

  3

  MIT

• Bi-Temporal Knowledge Graph

  connectimtiazh

  F

  license

  -

  quality

  -

  maintenance

  Gives AI agents persistent memory with bi-temporal tracking, automatically extracting entities from natural language and enabling time-travel queries to understand facts as they existed at any point in history.

  Last updated 2025-12-19

  2

• of-mcp

  ThiTheGoat

  A

  license

  A

  quality

  C

  maintenance

  Provides MCP tools to search, retrieve, and answer questions from the public Open Finance Brasil Confluence documentation using BM25-based local indexing.

  Last updated 2026-05-16

  4

  MIT

• knowledge-mcp

  olafgeibig

  A

  license

  -

  quality

  B

  maintenance

  An MCP server that enables AI agents to query specialized, domain-specific knowledge bases built using the LightRAG framework for enhanced retrieval-augmented generation. It allows for managing and searching knowledge graphs and vector embeddings to provide accurate, context-aware information during an AI assistant's reasoning process.

  Last updated 2026-02-13

  51

  MIT

• Temporal Nexus Calculator MCP

  steveandroulakis

  F

  license

  -

  quality

  C

  maintenance

  Provides mathematical operations (expression evaluation, arithmetic, advanced calculations) through MCP, backed by Temporal workflows for reliability and durability. Demonstrates integration between Model Context Protocol tools and Temporal's Nexus RPC framework with full observability.

  Last updated 2026-01-17

  1

• Knowledge Graph MCP Server

  aiuluna

  A

  license

  A

  quality

  C

  maintenance

  Enables creating, managing, analyzing, and visualizing knowledge graphs with support for multiple graph types (topology, timelines, changelogs, requirements, knowledge bases, ontologies) including node/edge management and resource association.

  Last updated 2025-04-17

  15

  3

  1

  MIT

• mcp-knowledge-graph

  shaneholloman

  A

  license

  A

  quality

  B

  maintenance

  An improved implementation of persistent memory using a local knowledge graph with a customizable --memory-path. This lets Claude remember information about the user across chats.

  Last updated 2025-12-22

  10

  274

  859

  MIT

• Knowledge MCP Server

  sven-borkert

  A

  license

  A

  quality

  -

  maintenance

  Provides centralized knowledge management for projects, allowing users to store, search, and maintain project-specific knowledge that persists across sessions.

  Last updated 2025-08-13

  27

  14

  1

• proof-of-commitment

  piiiico

  F

  license

  A

  quality

  A

  maintenance

  Supply chain risk scoring for npm, PyPI, and GitHub repos

  Last updated 2026-05-22

  8

  2

• knowledge-rag

  lyonzin

  A

  license

  A

  quality

  C

  maintenance

  Local RAG system for Claude Code with hybrid search (semantic + BM25), cross-encoder reranking, markdown-aware chunking, and 12 MCP tools. Zero external servers, pure ONNX in-process.

  Last updated 2026-05-14

  12

  78

• recon-fuzz-knowledge

  Recon-Fuzz

  A

  license

  A

  quality

  C

  maintenance

  Recon Fuzz Knowledge MCP

  Last updated 2026-04-16

  14

  5

  MIT

• Knowledge Graph Memory Server

  itseasy21

  A

  license

  A

  quality

  C

  maintenance

  An implementation of persistent memory for Claude using a local knowledge graph, allowing the AI to remember information about users across conversations with customizable storage location.

  Last updated 2025-08-08

  11

  1,814

  60

  JavaScript

  MIT

• mcp-chain-of-thought

  liorfranko

  A

  license

  B

  quality

  C

  maintenance

  mcp-chain-of-thought

  Last updated 2025-05-07

  15

  37

  21

  MIT

• YouTube Knowledge MCP

  efikuta

  A

  license

  B

  quality

  C

  maintenance

  Transforms YouTube into a queryable knowledge source with search, video details, transcript analysis, and AI-powered tools for summaries, learning paths, and knowledge graphs. Features quota-aware API access with caching and optional OpenAI/Anthropic integration for advanced content analysis.

  Last updated 2025-10-21

  10

  14

  1

  MIT

• Chisel Knowledge MCP

  teknologika

  A

  license

  B

  quality

  C

  maintenance

  Enables building and managing knowledge workspaces with tools for ingesting content from text, clipboard, or URLs and searching organized knowledge bases. Supports multiple configurable workspaces with separate inbox and knowledge directories for structured information management.

  Last updated 2026-04-06

  11

  13

  MIT

• TDZ C64 Knowledge

  MichaelTroelsen

  F

  license

  B

  quality

  B

  maintenance

  An MCP server for indexing and searching Commodore 64 documentation using full-text, semantic, and fuzzy search across multiple file formats. It enables RAG-based question answering, entity extraction, and interactive timeline or knowledge graph visualizations.

  Last updated 2026-01-10

  94

• MCP of MCPs

  eliavamar

  A

  license

  -

  quality

  C

  maintenance

  A meta-server that aggregates multiple MCP servers into a single interface, reducing token usage by 98%+ through progressive tool discovery and direct code execution that processes data between tools without consuming context window space.

  Last updated 2026-04-23

  16

  10

  Apache 2.0

• Volterra Knowledge Engine

  duhman

  A

  license

  -

  quality

  C

  maintenance

  A read-only Model Context Protocol server that exposes a semantic knowledge base to AI agents via 27 tools. It enables querying of documents and data integrated from sources like Notion, SharePoint, HubSpot, and Slack.

  Last updated 2026-02-24

  MIT