MCP Server Directory

45,118 Model Context Protocol servers for Claude Code, Claude Desktop, Cursor and every MCP client. Filter by what they do, whether they run locally or remotely, and whether they're free.

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866 servers in Knowledge, Memory & RAG

Notion Arena

0774

SynergyFlowLabs/notion-arena

MCP server for Notion Arena — 143 Notion components: 132 widgets + 11 recipes

LocalFreeKnowledge, Memory & RAG

Memory 1file

25

pomazanbohdan/memory-mcp-1file

Persistent semantic and graph-based agent memory in a single self-contained binary with embedded database and models.

LocalFreeRustKnowledge, Memory & RAG

Fidelis Memory

25

hermes-labs-ai/fidelis

Local-first memory with verbatim recall, querying, health checks and context-sensitive orientation, using LLM-free retrieval by default.

LocalFreePythonKnowledge, Memory & RAG

Aifp

3669

wjabanjj/aifp-mcp

Persistent memory MCP server for AI coding assistants. Chinese-first and fully local.

LocalFreeKnowledge, Memory & RAG

Slowave

25

slowave-ai/slowave

Local adaptive memory for AI coding agents through a five-tool MCP lifecycle.

LocalFreeKnowledge, Memory & RAG

Yantrikdb

25

yantrikos/yantrikdb-mcp

Cognitive memory for AI agents — semantic recall, knowledge graph, and contradiction detection

LocalFreeKnowledge, Memory & RAG

memo

24

jagoff/memo

Local-first semantic memory: hybrid search, Markdown storage, MLX or CPU embeddings, contradiction detection, time-travel history and cross-machine git sync.

LocalFreePythonKnowledge, Memory & RAG

SAME

24

sgx-labs/statelessagent

Local agent memory with provenance tracking that detects when sources change, plus session handoffs, decision records, semantic search and a knowledge graph.

LocalFreeGoKnowledge, Memory & RAG

World Model

24

SaravananJaichandar/world-model-mcp

Temporal codebase knowledge graph that links test failures to code changes, learns co-edit patterns, predicts regression risk and enforces edit constraints.

LocalFreePythonKnowledge, Memory & RAG

Memento

24

veerps57/memento

Local-first, LLM-agnostic memory layer for AI assistants.

LocalFreeKnowledge, Memory & RAG

Nouz

24

Semiotronika/NOUZ-MCP

Semantic knowledge engine for Obsidian with auto-classification and DAG hierarchy

LocalFreeKnowledge, Memory & RAG

OpenMyMemo

24

MyMemoAI/openmymemo

Your AI memory as a local folder you own. Every app shares it; you see and can undo each change.

LocalFreeKnowledge, Memory & RAG

Memory

23

JamesANZ/memory-mcp

Store and retrieve conversation memories from multiple LLMs in MongoDB, with timestamps and LLM identification.

LocalFreeTypeScriptKnowledge, Memory & RAG

Mnemos

23

s60yucca/mnemos

Persistent memory for coding agents storing architecture decisions, bug root causes and conventions, with full-text search and token-budgeted context assembly.

LocalFreeGoKnowledge, Memory & RAG

Koma Core

13305

swnotmetal/Project-Koma

Protected RAG storage — agents discover public metadata, content only by access token.

LocalFreeKnowledge, Memory & RAG

Montycat

23

MontyGovernance/montycat-mcp

Shared, persistent memory for AI agents, with semantic recall and live updates.

LocalFreeKnowledge, Memory & RAG

Yggdrasil

22

VonderVuflya/Yggdrasil

Local-first memory for AI coding agents on SQLite/FTS5, curated and semantically de-duplicated, with data stored as plain rows you own.

LocalFreePythonKnowledge, Memory & RAG

adrkit decision memory

22

mbeacom/adrkit

Deterministic, offline, read-only ADR decision memory for coding agents. No model or network calls.

LocalFreeKnowledge, Memory & RAG

Connapse

21

Destrayon/Connapse

Self-hosted knowledge backend for agents with hybrid vector and keyword search and container-isolated indexes.

LocalFreeC#Knowledge, Memory & RAG

Standardnotes

12282

lozit/mcp-standardnotes

End-to-end encrypted access to a Standard Notes vault (protocol 004, local stdio only).

LocalFreeKnowledge, Memory & RAG

Mnemosyne OS

20

Mnemosyne-OS/Mnemosyne-Neural-OS

Human-governed memory in local, domain-separated vaults with hybrid retrieval; also reads other coding agents' output. Requires the Mnemosyne OS desktop app.

LocalFreeTypeScriptKnowledge, Memory & RAG

Annota

20

dengls24/annota

Annotate papers in Zotero: highlight key findings with semantic color coding, explain formulas and write structured reading notes.

LocalFreePythonKnowledge, Memory & RAG

Distil

20

dshakes/distil

Reversibly compress large tool outputs into recoverable handles, expand them on demand and track token and cost savings locally.

LocalFreePythonKnowledge, Memory & RAG

GoodMemory

201.5k

hjqcan/GoodMemory

Local-first, auditable memory with scoped user/project storage in SQLite or Postgres, read-only recall by default and opt-in reviewed writeback.

LocalFreeTypeScriptKnowledge, Memory & RAG

PPM

15145

drQedwards/PPM

PMLL Memory MCP — persistent KV context memory and Q-promise deduplication.

LocalFreeKnowledge, Memory & RAG

Fable

19

grooverLab/fable

Full-text and semantic search over Claude Code transcript history, with exact thread recall and durable remembered facts in local SQLite.

LocalFreePythonKnowledge, Memory & RAG

Obsidian

19

smith-and-web/obsidian-mcp-server

Remote Obsidian vault management over SSE: notes, directories, frontmatter, tags, search and link operations, deployable with Docker.

LocalFreeTypeScriptKnowledge, Memory & RAG

Scaffold

19

Beer-Bears/scaffold

Scaffold is a Retrieval-Augmented Generation (RAG) system designed to structural understanding of large codebases. It transforms your source code into a living knowledge graph, allowing for precise, context-aware interactions that go far beyond simple file retrieval.

LocalFreeKnowledge, Memory & RAG

Context Mem

19443

JubaKitiashvili/context-mem

Persistent memory for AI agents — 98%+ retrieval recall, 99% token savings, 44 tools

LocalFreeKnowledge, Memory & RAG

kObsidian

8339

bezata/kObsidian

Filesystem-first MCP for Obsidian — an LLM-maintained wiki inspired by Karpathy's LLM Wiki.

LocalFreeKnowledge, Memory & RAG

Molecare

4445

MoleCare/molecare-mcp

Educational dermatology knowledge and mole tracking. No credentials needed. Not a medical device.

LocalFreeKnowledge, Memory & RAG

Project Tessera

18

besslframework-stack/project-tessera

Local workspace memory: indexes Markdown, CSV and session logs into a vector store with hybrid search, cross-session memory and knowledge graph visualization.

LocalFreePythonKnowledge, Memory & RAG

Agentpack

183k

ihorponom/agentpack

Repo-native task continuity for coding agents: a reviewed task-state ledger of decisions, dead ends, evidence and checkpoints that later sessions resume from.

LocalFreeTypeScriptKnowledge, Memory & RAG

Engram

18

rwnalds/engram

Git-backed, Obsidian-compatible Markdown second brain for agents: search ranks live notes above superseded ones, with per-agent tokens and a git audit trail.

LocalFreeTypeScriptKnowledge, Memory & RAG

Mac Shortcuts

14113

Dominic-DK/mac-shortcuts-mcp

Read your Mac's Calendar, Reminders, Notes, Contacts and more via Shortcuts. Read-only, local.

LocalFreeKnowledge, Memory & RAG

MemoryPilot

18

Soflutionltd/MemoryPilot

Long-term memory for AI agents: fast recall, project brains and skills, local, in one binary.

LocalFreeKnowledge, Memory & RAG

Alcove

17

epicsagas/alcove

On-demand BM25 search over private project docs for coding agents, keeping docs out of public repos.

LocalFreeRustKnowledge, Memory & RAG

Cross LLM

17

JamesANZ/cross-llm-mcp

Cross-LLM communication and memory sharing so different AI models can collaborate and share context across conversations.

LocalFreeTypeScriptKnowledge, Memory & RAG

Easy Obsidian

17

louis030195/easy-obsidian-mcp

Create, read, update and search notes in local Obsidian vaults via filesystem access.

LocalFreeTypeScriptKnowledge, Memory & RAG

Agentic Task System (ATS)

17

renezander030/agentic-task-system

Turns your task manager into agent memory with hybrid retrieval over TickTick or an Obsidian vault, without a separate vector database.

LocalFreeTypeScriptKnowledge, Memory & RAG

Lians Agent Memory

17

Lians-ai/Lians

Bitemporal agent memory with deterministic fact supersession, point-in-time recall, memory lineage, conflict tracking and tamper-evident audit trails.

LocalFreePythonKnowledge, Memory & RAG

Zaxy

17

syndicalt/zaxy

Event-sourced agent memory on a hash-chained log with an embedded Kuzu temporal knowledge graph, salience-based forgetting and review-gated consolidation.

LocalFreePythonKnowledge, Memory & RAG

ComfyUI Builder

5361

MIt9/mcp-comfy-ui-builder

ComfyUI MCP server: knowledge base, workflow builder, real-time execution, models, plugins.

LocalFreeKnowledge, Memory & RAG

Dwarffortress

0520

mrfentmen/dwarffortress-mcp

Use this MCP server to the Dwarf Fortress wiki, !!FUN!! knowledge about the most complex game...

LocalFreeKnowledge, Memory & RAG

Vecline

171.2k

shunyagatha/Vecline

Local-first image, vector and document toolkit that measures its own output. Nothing uploaded.

LocalFreeKnowledge, Memory & RAG

Kremis

16

TyKolt/kremis

Local deterministic knowledge graph on redb with no LLM or embedding calls, BLAKE3 state hashing and canonical export for byte-identical audits.

LocalFreeRustKnowledge, Memory & RAG

Linksee Memory

16460

michielinksee/linksee-memory

Local-first cross-agent memory in one SQLite file with a layered structure, Ebbinghaus-style forgetting and detection of code drifting from past decisions.

LocalFreeTypeScriptKnowledge, Memory & RAG

Obsidian Everywhere

16447

junnnnnw00/obsidian-everywhere

Graph-native Obsidian vault access: search, backlinks, n-hop neighborhoods, paginated reads and safe partial and bulk edits with dry-run and rollback.

LocalFreeTypeScriptKnowledge, Memory & RAG