Best Knowledge AI Skills & MCP Servers

AI Agent Skill for NSAuditor AI — gives any AI coding agent built-in knowledge of NSAuditor's MCP tools, schemas, plugins, and security audit workflows.

Standalone Node MCP server: semantic search + knowledge graph + vault editing for Obsidian, no plugin required.

DARE Framework - CLI, GraphRAG engine, MCP server and shared types in a single package

MCP server for agent automation: persistent memory and deterministic workflow execution for AI agents and chats

MCP server for the Polarity exocortex. Read and write your personal knowledge graph from any LLM client.

Knowledge graph builder — construct a graph of code entities (files, functions, types) and their relationships.

Gnosys — Persistent Memory for AI Agents. Sandbox-first runtime, central SQLite brain, federated search, Dream Mode, Web Knowledge Base, Obsidian export.

The most feature-complete MCP server for Obsidian vaults — search, read, write, tag, link analysis, graph traversal, canvas support, and more.

MeMesh — Local memory for Claude Code and MCP coding agents. One SQLite file, zero cloud required.

Fabric MCP knowledge server — stdio transport for Claude Code / Cursor / Codex CLI, manages .fabric/ knowledge base + agents.meta.json + event ledger.

Knowledge graph query — find nodes, traverse neighbors, find paths, filter by type.

Unified AI coding agent with MCP integration for Claude, VS Code, and Kiro IDE. Features persistent knowledge graph via OverdriveDB, token compression (60-80%), multi-model switching, and shared/independent project modes.

Standalone MCP server for Copass — drop-in discover/interpret/search + Context Window tools for any MCP client (Claude Agent SDK, Claude Code, Claude Desktop, Cursor)

Fabric MCP server — code intelligence, governance rules, and cloud-sync disaster recovery over a local codebase index

ProductBrain MCP server — single source of truth for product knowledge in Cursor, Claude Desktop, and any MCP-compatible AI assistant.

AI copilot for TouchDesigner with live MCP control — 106 tools, focus + locations, hint injection, component notes, POPx inspection, knowledge corpus, project lifecycle control, technique memory, typed patch sessions, agent activity log, one-tool self-upd

Knowledge base — index documents, search by content, fetch entries, purge stale data, rank by relevance.

Knowledge graph export — generate HTML, Mermaid, GraphML, Cypher, Obsidian, and wiki formats.

Project-local RAG memory MCP server — knowledge graph + multilingual vector + FTS5 in a single SQLite file. Per-project isolation, 30 MCP tools, codepoint-safe chunking (Korean/CJK/emoji).

The Autonomous Brain for your codebase — compiled architectural knowledge for AI-assisted development.

Ricord — persistent memory + repo knowledge graph for AI coding assistants. Ships an MCP server (`ricord-mcp`) and a repo ingestion CLI (`ricord init`).

Research knowledge repository with semantic search, citations, and project lineage tracking

Agent-driven knowledge base — immutable raw sources + mutable wiki + self-checking lint. MCP server, no LLM needed.

ContextStream MCP server - v0.4.x with consolidated domain tools (~11 tools, ~75% token reduction). Code context, memory, search, and AI tools.