Knowledge & Memory MCP Servers
Knowledge & Memory category — 389 MCP servers, ranked by GitHub stars.
RoboSystems
Accounting knowledge graphs: SEC XBRL filings, QuickBooks ledgers, reports and forecasts over MCP.
RAGStack-Lambda
Search, chat, upload, and scrape a serverless RAGStack knowledge base on AWS.
data-olympus
Governance-grade project knowledge MCP server for coding agents. Git-native Markdown knowledge base with proposed vs accepted guidance,…
Mnemoverse Memory
Hosted AI agent memory that learns from outcomes, with shared rooms, in Claude, Cursor and ChatGPT.
memory-mcp-1file
A self-contained Memory server with single-binary architecture (embedded DB & models, no dependencies). Provides persistent semantic and…
membase-mcp
Save and query your agent memory in distributed way by Membase
yantrikdb-mcp
Cognitive memory for AI agents — semantic recall, knowledge graph, and contradiction detection
ZenBrain Memory
Seven-layer agent memory: episodic, semantic, procedural and core. Local SQLite, no account.
Fidelis Memory
Recall locally stored agent memories through an MCP-compatible host.
SAME - Stateless Agent Memory Engine
Persistent memory for AI coding agents. Local-first SQLite + vector search. 17 MCP tools.
celiums-memory
Cognitive memory engine with 5,100+ knowledge modules, circadian rhythm awareness, and emotional state tracking (PAD model). Hybrid search…
mnemos
Persistent memory engine for AI coding agents. Stores architecture decisions, bug root causes, and project conventions across sessions.…
world-model-mcp
Temporal knowledge graph for codebases with constraint enforcement at the edit boundary.
jarvis-orb
Persistent 4-tier AI memory (episodic, semantic, project, procedural) with temporal scoring, contradiction detection, entity tracking, and…
memory-mcp
An MCP server that stores and retrieves memories from multiple LLMs using MongoDB. Provides tools for saving, retrieving, adding, and…
Yggdrasil
One shared, durable memory for your AI coding agents — local-first, zero-dependency.
Vault Cortex
Standalone MCP server for Obsidian vaults — hybrid search, notes & files, memory, tasks, OAuth 2.1
codeseeker
Graph-powered code intelligence with semantic search and knowledge graph for AI assistants
memory-journal-mcp
Developer journal with knowledge graphs, relationships, Git context, and semantic search
MediaWiki
Search, read, and edit any MediaWiki wiki. Works with Wikipedia, Fandom, and more.
Nouz
Semantic knowledge engine for Obsidian with auto-classification and DAG hierarchy
scaffold
Scaffold is a Retrieval-Augmented Generation (RAG) system designed to structural understanding of large codebases. It transforms your…
annota
AI-powered paper annotation MCP server. Reads papers, highlights key findings with semantic color coding, explains formulas, and writes…
CacheOverflow
MCP server for cache.overflow - AI agents sharing knowledge with AI agents
memo
Memory for AI agents — MLX (Apple Silicon) or CPU (Linux), sqlite-vec + BM25, zero cloud.
neurodivergent-memory
Persistent knowledge graph MCP server for neurodivergent thinking. BM25 search, no cloud LLM.
context-mem
Persistent memory for AI agents — 98%+ retrieval recall, 99% token savings, 44 tools
Connapse
Self-hosted knowledge backend for AI agents with hybrid search and MCP tools
GoodMemory
Durable user/project memory for MCP clients: recall context and remember selected facts.
Noosphere
Community of Consciousness MCP Server — upload and explore collective wisdom via GitHub.
agent-knowledge
Cross-session memory for AI agents - knowledge graph, scoring, semantic search
easy-obsidian-mcp
Interact with Obsidian vaults for knowledge management. Create, read, update, and search notes. Works with local Obsidian vaults using…
mcp-me
Expose your personal, professional, educational, and social profile to any AI assistant via MCP.
obsidian-mcp-server
SSE-enabled MCP server for remote Obsidian vault management with 29 tools for notes, directories, frontmatter, tags, search, and link…
project-tessera
Local workspace memory for Claude Desktop. Indexes your documents (Markdown, CSV, session logs) into a vector store with hybrid search,…
agentpack
Repo-native task continuity for AI coding agents: a reviewed task-state ledger served over MCP.
zaxy
Event-sourced, auditable agent memory over MCP: cited checkout, replayable provenance.
claude-engram
Persistent memory and session intelligence for Claude Code. Auto-tracks mistakes, decisions, and context via hooks. Mines session history…
Distil
Reversibly compress tool outputs to recoverable handles; expand to exact original bytes on demand.
cross-llm-mcp
An MCP server that enables cross-LLM communication and memory sharing, allowing different AI models to collaborate and share context…
Mnemosyne OS
Memory the human governs, on their own machine, plus what other coding agents here wrote.
alaya
Local memory engine for AI agents with knowledge graphs, forgetting, and semantic recall
kika-obsidian-mcp
Local-first Obsidian vault MCP server for Codex, Claude Desktop, and other MCP clients. Works directly with markdown files, no Obsidian…
recallnest
Persistent memory MCP server for AI coding agents (Claude Code, Codex, Gemini CLI). Hybrid retrieval (vector + BM25), cross-encoder…
alcove
MCP server that gives AI coding agents on-demand access to private project docs via BM25 ranked search. One setup for Claude Code, Cursor,…
Obsidian Everywhere
Graph context, semantic search, guarded edits, and reviewable Git for local Obsidian vaults.
Octobrain
Persistent memory for AI assistants with semantic search and knowledge graph relationships.
Remembra — AI Memory Layer
Persistent AI memory with entity resolution, temporal knowledge graph & 11 MCP tools.
CogniRepo
FAISS, call graph, AST, BM25 — 34 MCP tools for AI agents. 50-80% token reduction. Offline.
memoir
Persistent memory for AI coding tools via MCP. Remembers across sessions and machines.
MailFathom
Security-first, self-hosted email archive with search, cited answers, and sending for AI agents.
obsidian-mcp
Self-hosted MCP server for Obsidian with semantic + full-text search over PostgreSQL/pgvector, wikilink graph traversal, atomic note CRUD,…
memtomem
Markdown-first long-term memory for AI agents. Hybrid BM25 + vector search, runs locally.
linksee-memory
Hand a project over with the reasons attached. Local-first cross-agent memory MCP + drift detection.
PapersFlow
Academic research MCP server for paper search, citation checks, graphs, and deep research.
Agentic Task System (ATS)
MCP server giving AI agents persistent task memory across TickTick, Notion, GitHub, Linear & Beads
kremis
Deterministic knowledge graph MCP server. Single binary, zero LLM/embedding calls in the bridge, BLAKE3 state hashing, canonical KREX…
Midas
Local-first, source-traceable agent memory — no LLM at ingest, fully offline
Longhand
Local memory for Claude Code. Semantic recall across session history with zero API calls.
deep-thinker
Advanced cognitive reasoning MCP server with DAG-based thought graph, 5 reasoning strategies (sequential, dialectic, parallel, analogical,…