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

Aletheia

16

firatmio/aletheia

Project memory for coding agents whose memories carry code evidence, re-checked on every recall.

LocalFreeKnowledge, Memory & RAG

Cuemap

1440

cuemap-dev/cuemap-mcp

Local memory and context retrieval for AI agents through CueMap.

LocalFreeKnowledge, Memory & RAG

Langchain

4365

baixianger/langchain-MCP

LangChain/LangGraph/DeepAgents knowledge + LangGraph agent debugging (Polly-like)

LocalFreeKnowledge, Memory & RAG

Lore

16

jordanhindo/lore

Lightweight MCP for infinite agent memory. Any agent, any session, anytime.

LocalFreeKnowledge, Memory & RAG

mneme Record

3386

OnourImpram/mneme

Vault-native, accountable memory for Claude Code and MCP clients. Markdown is ground truth.

LocalFreeKnowledge, Memory & RAG

Recallnest

15

AliceLJY/recallnest

Local-first memory for coding agents: hybrid vector/BM25 retrieval with reranking, knowledge graph, session checkpoint/resume and multi-scope isolation.

LocalFreeTypeScriptKnowledge, Memory & RAG

Agent Memory

15

xChuCx/agent-memory

Git-native project memory for coding agents: Markdown in your repo, reviewable staged updates, secret/PII-safe and branch-aware, without cloud or vector DB.

LocalFreeGoKnowledge, Memory & RAG

CogniRepo

15

ashlesh-t/cognirepo

Persistent memory and codebase context for coding agents: FAISS vector store, AST symbol index, knowledge graph, episodic journal and cross-agent handoff.

LocalFreePythonKnowledge, Memory & RAG

NexusMem

15287

yaminbkk/NexusMem

Correlates failed shell commands and their exit codes with whatever later fixed them, alongside git diffs and docs, stored locally in SQLite.

LocalFreeTypeScriptKnowledge, Memory & RAG

GPU

15

pmady/gpu-mcp-server

NVIDIA GPU metrics as MCP tools — utilization, memory, temperature, power. Supports MIG.

LocalFreeKnowledge, Memory & RAG

Memoir

151.2k

camgitt/memoir

Persistent memory for AI coding tools via MCP. Remembers across sessions and machines.

LocalFreeKnowledge, Memory & RAG

Midi Tools

443

mrfentmen/midi-tools-mcp

MIDI note math: note names, frequencies, and note numbers. No network and no key.

LocalFreeKnowledge, Memory & RAG

RAGScore

15

HZYAI/RagScore

Generate QA datasets & evaluate RAG systems with failure diagnosis. Any LLM.

LocalFreeKnowledge, Memory & RAG

Apple Notes

14

ailenshen/apple-notes-mcp

Read and write Apple Notes with bidirectional Markdown conversion: SQLite queries for listing and search, AppleScript for full CRUD.

LocalFreeTypeScriptKnowledge, Memory & RAG

Longhand

14

Wynelson94/longhand

Persistent local memory for Claude Code: indexes all sessions verbatim into SQLite and ChromaDB for semantic recall across your history, with no API calls.

LocalFreePythonKnowledge, Memory & RAG

Memory

14

michael-denyer/memory-mcp

Two-tier memory (hot cache and cold semantic search) that promotes frequently used patterns, extracts knowledge from Claude outputs and links it in a graph.

LocalFreePythonKnowledge, Memory & RAG

Midas

14

vornicx/Midas

Local-first long-horizon agent memory: source-traceable recall, belief revision, selective forgetting and a guard against memory-driven destructive actions.

LocalFreePythonKnowledge, Memory & RAG

Attestor

14

bolnet/attestor

Self-hosted memory for agent teams. Bi-temporal replay, deterministic retrieval, audit log.

LocalFreeKnowledge, Memory & RAG

Brainbox

14471

thebasedcapital/brainbox

Hebbian memory for AI agents. Learns file patterns, predicts next tools, saves tokens.

LocalFreeKnowledge, Memory & RAG

Evalsmith

1379

diegoperezg7/evalsmith-mcp

Evaluate RAG retrieval, agent tool calls and prompt regressions with deterministic metrics.

LocalFreeKnowledge, Memory & RAG

Global Agent Memory

14

ozankasikci/global-agent-memory

Shared, project-aware memory for Claude Code, Codex, and other agents with human review.

LocalFreeKnowledge, Memory & RAG

Hushdrop

8170

maxtechera/hushdrop

Open-source artifact sharing for AI agents: private, branded, zero-knowledge links.

LocalFreeKnowledge, Memory & RAG

Obsidian CLI

2372

stonematt/mcp-obsidian-cli

Save chat notes from Claude Desktop to your vault — MCP on Obsidian CLI. Keep what matters.

LocalFreeKnowledge, Memory & RAG

Partner Center

2348

tunahanaliozturk/partner-center-mcp

Unofficial Partner Center REST API knowledge & codegen assistant (scenarios, auth, errors).

LocalFreeKnowledge, Memory & RAG

Empathy Framework

13

Smart-AI-Memory/empathy-framework

Five-level AI collaboration system with persistent local-first memory via MemDocs and anticipatory capabilities.

LocalFreePythonKnowledge, Memory & RAG

Lennys Quotes

13

bluzername/lennys-quotes

Search Lenny's Podcast transcripts with YouTube timestamps for product management insights on PRDs, strategy and PM careers.

LocalFreeTypeScriptKnowledge, Memory & RAG

Persona Sessions

13

mattjoyce/mcp-persona-sessions

Structured, persona-driven sessions for interview preparation, personal reflection and coaching, with timers and performance evaluation.

LocalFreePythonKnowledge, Memory & RAG

mneme

386

TheGoatPsy/mneme

Vault-native, accountable memory for Claude Code: Markdown is the source of truth, with no LLM on the Stop path and redaction before any derived store.

LocalFreePythonKnowledge, Memory & RAG

Obsidian Turbocharged

135.8k

The-40-Thieves/obsidian-tc

Obsidian vault access with role-based access control, native search, multi-vault support, pluggable embeddings and SLSA provenance.

LocalFreeTypeScriptKnowledge, Memory & RAG

ellmos Homebase

2328

ellmos-ai/ellmos-homebase-mcp

Local-first LLM orchestration: memory, knowledge, state, routing, swarm, API discovery, plugins.

LocalFreeKnowledge, Memory & RAG

Kairn

13

primeline-ai/kairn

Local-first knowledge engine for AI agents: memory, graph, and recall over MCP.

LocalFreeKnowledge, Memory & RAG

Neurakeep

13379

dominiclachance/neurakeep

Local-first, source-cited memory for AI agents with proposal review, failure memory, and MCP tools.

LocalFreeKnowledge, Memory & RAG

Turnbook

13

goyohan0611-png/turnbook

Local long-term memory shared by all your AI agents, kept word for word on your own PC.

LocalFreeKnowledge, Memory & RAG

Claude Find

12290

Cavinooo/claude-find

Retrieve memory from across your Claude Code sessions on demand.

LocalFreeTypeScriptKnowledge, Memory & RAG

Anneal Memory

12

phillipclapham/anneal-memory

Two-layer memory for AI agents with an immune system. Zero dependencies.

LocalFreeKnowledge, Memory & RAG

Awareness Local

12

everest-an/Awareness-Market

Local-first persistent memory for AI coding agents - 96.0% R@5 on LongMemEval, zero LLM calls.

LocalFreeKnowledge, Memory & RAG

Cortex

349

arjunkumargiri/cortex

Shared, persistent memory for AI agents — works with Claude, Kiro, Cursor, or any MCP client.

LocalFreeKnowledge, Memory & RAG

Pindoc

12

var-gg/pindoc

Code-pinned team memory for AI coding agents — typed artifacts, MCP-native, self-host.

LocalFreeKnowledge, Memory & RAG

Token Compressor

12

base76-research-lab/token-compressor

Compress prompts 40-60% using local LLM + embedding validation. Preserves all conditionals.

LocalFreeKnowledge, Memory & RAG

Toon Memory

12714

LuiggiVal08/toon-memory

Offline persistent memory for AI coding agents — 35 tools, 80% fewer calls, no LLM

LocalFreeKnowledge, Memory & RAG

Wikimoth

8114

juliangeymonat-jpg/wikimoth

Deterministic, token-minimal agent memory: multi-hop [[wikilink]] recall with no LLM in the loop.

LocalFreeKnowledge, Memory & RAG

Xaip Protocol

2293

xkumakichi/xaip-protocol

AI agents get on-chain identity, credentials, reputation, escrow, and persistent memory on XRPL.

LocalFreeKnowledge, Memory & RAG

LIFE

11

TeamSafeAI/LIFE

Persistent identity for AI agents: servers for drives, relationships, semantic memory with decay, working threads, learned patterns, journaling and forecasting.

LocalFreePythonKnowledge, Memory & RAG

Lore

11

hyunjae-labs/lore

Local semantic search across Claude Code conversations with hybrid vector and keyword search, background indexing and per-project selection.

LocalFreeTypeScriptKnowledge, Memory & RAG

coldstart

11

AkashGoenka/coldstart

Codebase memory for coding agents: a deterministic AST index finds task-relevant files, and in-repo Markdown notes flag themselves stale when code changes.

LocalFreeTypeScriptKnowledge, Memory & RAG

Hive Vault

11

mlorentedev/hive

On-demand Obsidian vault access: adaptive context loading, full-text and ranked search, health checks, auto git commits and delegation to cheaper models.

LocalFreePythonKnowledge, Memory & RAG

Memory Gateway

541

IgorGanapolsky/mcp-memory-gateway

Pre-action gates that prevent coding agents from repeating known mistakes by turning captured feedback and failures into rules enforced via hooks.

LocalFreeTypeScriptKnowledge, Memory & RAG

Nocturnusai

3229

Auctalis/nocturnusai

Deterministic reasoning engine for agent context compression: extracts structured facts with logical inference, proof chains and truth maintenance.

LocalFreePythonKnowledge, Memory & RAG