"An overview of knowledge graphs and their applications" matching MCP servers:

• hermes-knowledge-ingestion

  lyc403223157-source

  A

  license

  -

  quality

  A

  maintenance

  Enables saving URLs, local files, plain text, and platform content (WeChat, X, YouTube, PDF, images, audio/video, Telegram) as structured Markdown knowledge cards in an Obsidian vault, with optional AI-powered classification and tagging.

  Updated 5 days ago (2026-08-12 14:14 UTC)

  49

  Apache 2.0

• notion-knowledge-mcp

  wuwu506

  F

  license

  -

  quality

  C

  maintenance

  A Cloudflare Workers-based MCP server for Notion knowledge base management, enabling intelligent search, automatic recording of code snippets, and statistics analysis through natural language.

  Updated 16 days ago (2026-08-01 20:10 UTC)

• Knowledge MCP

  Abdulkadirkilicc

  F

  license

  -

  quality

  B

  maintenance

  Enables saving and searching local notes, with tools to list notes and search backup files.

  Updated 10 days ago (2026-08-06 21:33 UTC)

• Vault Knowledge MCP Server

  seanwinslow28

  A

  license

  A

  quality

  C

  maintenance

  Read-only MCP server that surfaces contradictions in an Obsidian vault's knowledge graph via semantic search and reasoning edges.

  Updated 3 months ago (2026-05-30 18:55 UTC)

  3

  66

  MIT

• mcp-knowledge-base

  vishnu-vasan

  F

  license

  A

  quality

  C

  maintenance

  A personal knowledge base MCP server that allows AI assistants to manage notes, tasks, and ideas through tools, resources, and prompts.

  Updated 6 months ago (2026-02-19 04:09 UTC)

  11

• Knowledge Assistant MCP Server

  r2d2helm

  F

  license

  A

  quality

  C

  maintenance

  Enables Claude Code to interact with Obsidian vaults by providing tools for multi-term searching, reading notes, and exploring tag-based relationships. It allows users to query, analyze, and manage their personal knowledge base directly through natural language.

  Updated 6 months ago (2026-02-07 20:02 UTC)

  9

• knowledge-curator-mcp

  Ryu07-d

  A

  license

  B

  quality

  C

  maintenance

  A local, zero-cost MCP server that fact-checks your Markdown/Obsidian notes using a local LLM (via Ollama) and free sources like Wikipedia and DuckDuckGo, with no cloud API or API keys.

  Updated 2 months ago (2026-06-15 06:26 UTC)

  5

  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.

  Updated 2 months ago (2026-06-26 05:22 UTC)

  11

  8

  MIT

• Trello Knowledge MCP Server

  pscheit

  A

  license

  -

  quality

  D

  maintenance

  An MCP server that utilizes Trello as a knowledge base for storing, searching, and retrieving code snippets and notes. It enables full CRUD operations and organized categorization of information using Trello boards and labels.

  Updated 9 months ago (2025-11-21 10:05 UTC)

  82

  MIT

• mcp-knowledge-gaps

  ermintoygar

  A

  license

  -

  quality

  C

  maintenance

  Identifies knowledge gaps in markdown vaults, ranks them by priority, generates research questions, and offers long-tail sampling to break confirmation bias.

  Updated 12 days ago (2026-08-04 22:04 UTC)

  MIT

• knowledge-base-mcp

  Diptanil-x-42

  A

  license

  -

  quality

  C

  maintenance

  A lightweight personal knowledge base MCP server that lets clients store, search, organize, and summarize research notes from a local JSON file.

  Updated a month ago (2026-07-11 18:01 UTC)

  MIT

• knowledge-wiki-mcp

  pongs1

  F

  license

  -

  quality

  C

  maintenance

  MCP server for co-building and managing atomic learning notes in an Obsidian vault, with note retrieval, template reading, MOC listing, and note writing tools.

  Updated 2 months ago (2026-06-09 05:05 UTC)

• Out of Context

  HJeon139

  A

  license

  A

  quality

  D

  maintenance

  An MCP server for managing contextual data as markdown files with metadata, enabling agents to save, retrieve, search, and delete contexts using simple CRUD operations.

  Updated 8 months ago (2025-12-18 06:11 UTC)

  5

  Apache 2.0

• io.github.onetrueclaude

  onetrueclaude-creator

  A

  license

  A

  quality

  D

  maintenance

  Scans markdown vaults to identify concepts mentioned but not defined, ranks gaps by priority, and generates research questions or random long-tail topics to fill knowledge gaps.

  Updated 4 months ago (2026-04-18 13:37 UTC)

  5

  MIT

• knowledge-to-action-mcp

  tac0de

  A

  license

  A

  quality

  C

  maintenance

  Turn Obsidian notes into agent-ready context, preview-only plans, and safe repo handoffs.

  Updated 2 months ago (2026-06-23 04:43 UTC)

  13

  14

  3

  MIT

• Knowledge Hub

  LaserFocused-ee

  A

  license

  -

  quality

  C

  maintenance

  Provides AI assistants with unified access to organizational knowledge across Guru, Notion, and local docs, enabling intelligent document creation, retrieval, and management.

  Updated a year ago (2025-07-11 12:33 UTC)

  10

  MIT

• Obsidian Knowledge Management

  TheOutcastVirus

  F

  license

  -

  quality

  D

  maintenance

  Enables LLMs to read, search, and manage Obsidian vault markdown files, including YAML frontmatter, wikilinks, and graph operations through a secure stateless I/O layer.

  Updated 5 months ago (2026-03-25 22:32 UTC)

• personal-project-knowledge-mcp

  YR-yangrui

  F

  license

  -

  quality

  A

  maintenance

  Personal local AI memory/document MCP that manages short and long-term memories and Markdown documents, with tools for import, search, and retrieval.

  Updated 20 days ago (2026-07-28 09:35 UTC)

• Local Knowledge Desk

  MatiasLaukka

  F

  license

  A

  quality

  B

  maintenance

  A local MCP server for managing Markdown notes, enabling create, list, read, search, summarize, and delete operations through natural language.

  Updated 3 days ago (2026-08-13 21:48 UTC)

  6

  1

• Knowledge Base MCP Server

  cwente25

  F

  license

  A

  quality

  D

  maintenance

  Enables AI assistants to manage a personal markdown-based knowledge base with natural language interactions. Supports creating, searching, updating, and organizing notes across categories like people, recipes, meetings, and procedures.

  Updated 9 months ago (2025-11-28 01:45 UTC)

  11

  1