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MCP servers tagged second-brain
261 live MCP servers tagged "second-brain", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with second-brain.
Onebrain
AI OS that extends Claude Code, Gemini CLI, Codex, Qwen — adding persistent memory, 24+ skills, and personal calibration. Plain Markdown. Local-first. Yours forever.
Hippocampus
A deliberately lite personal brain: Obsidian to browse, Claude Code or Codex for everything else. No vector DB, no embeddings, no MCP servers, no Obsidian plugins — markdown, one…
OneBrain
AI OS that extends Claude Code, Gemini CLI, Codex, Qwen — adding persistent memory, 24+ skills, and personal calibration. Plain Markdown. Local-first. Yours forever.
Hippocampus
A deliberately lite personal brain: Obsidian to browse, Claude Code or Codex for everything else. No vector DB, no embeddings, no MCP servers, no Obsidian plugins — markdown, one…
Pinto Notes
Notes for iPhone and Mac that ChatGPT, Claude, Claude Code and Codex can read and edit. Feels like Apple Notes, imports it too. Open source, encrypted.
Cortex
Self-hosted AI memory: a private Markdown knowledge base, MCP server, and operations dashboard with verifiable source citations. By OBELYTH.
Eidetic
Claude Code memory system — auto context injection, drift detection, compounding, FTS5/vector search, Obsidian vault export. Zero core deps.
ForkLeaf
📝 Free, open-source Markdown notes that live in your own GitHub repo. Wikilinks, backlinks, offline search, Mermaid diagram studio, PDF reading and real version history, with no l…
Eidetic
Claude Code memory system — auto context injection, drift detection, compounding, FTS5/vector search, Obsidian vault export. Zero core deps.
Second Brain
Build a second brain every AI can share: your content in Oracle AI Database 26ai — semantic search with in-database embeddings, a self-compiling wiki, four kinds of agent memory,…
Claude Code Project Brain
Persistent, navigable memory for Claude Code — stop re-explaining your projects to the AI every session.
Tota Agent
Open-source AI agent: 11 LLM providers (OpenAI, Claude, Ollama, DeepSeek…), 60+ tools, web search, vision, browser & Android automation, MCP plugins, Second Brain memory — CLI · T…
Pyrite
A second brain for you, your agents, and your teams. Knowledge-as-Code: markdown + YAML in git, schema-validated, with semantic search and a three-tier MCP server. CLI, REST API,…
SecondBrain
A persistent MCP memory layer for AI agents. Store knowledge across sessions, retrieve it semantically, and connect any MCP-compatible agent.
Homekb
Local-first personal Markdown knowledge base with semantic search, AI Q&A, MCP, desktop/web clients, and a self-hostable zero-data-at-rest relay.
Memrain
Self-hosted memory for your AI agents: hybrid vector + keyword + entity-graph search over your notes and code, with cited sources, served over MCP to Claude Code, Cursor and Codex…
Obsidian MCP Server
Vault-native MCP server for Obsidian: let Codex, Claude Code, Hermes, and other agents read, search, and safely manage your notes.
Weft
Local-first knowledge graph for browser tabs. Louvain clustering, PageRank, MCP server for AI assistants, Chrome extension, CLI. 100% private.
Remarkable Brain
Local-first second brain for your handwritten reMarkable notebooks, searched through Claude Desktop.
TideMind
A living second brain that connects everything you think with — your AI agents, your notes, and beyond.
Memory Hub
Sanitized reference architecture for a self-hosted second-brain memory layer
Cerebellum
Agent-readable second brain using PostgreSQL + pgvector for semantic search and memory storage.
Kompl
Knowledge compiler — turns scattered links, files, and bookmarks into a living wiki that compounds with every new source.
Trip2g
Open-source MCP knowledge mesh - self-host your second brain, expose it to AI agents, federate with peers.
Matryca Plumber
local-first background AI daemon for Logseq OG. Turns your notes into an agentic workspace with autonomous indexing, zero data leaks, and an optional MCP server. Inspired by Andre…
Superbrain
Session memory for Claude Code. Auto-captures every session into a plain Obsidian markdown vault. Zero config. MIT. macOS + Linux.
Brain.md
Local-first markdown notes with a first-class MCP server. 16 tools + 2 resources for Claude Code, Claude Desktop, Cursor and any MCP agent. Per-folder permissions, semantic RAG vi…
Fortemi
Self-hosted AI knowledge base with hybrid semantic search (pgvector + FTS + RRF), MCP server, multi-provider LLM inference (Ollama, OpenAI, OpenRouter, llama.cpp), multimodal inge…
MemWhale
MemoryWhale is a Rust/Tauri local-first terminal memory system that records commands, arguments, logs, sessions, errors, bookmarks, and debug history into SQLite so work survives…
AI Brain Starter
The operating system for Claude Code. Memory, accountability, journaling, knowledge graphs, pattern recognition — one install, every session compounds.
Knowledge In A Vat
An intelligent knowledge management system connecting your local knowledge vault with Claude Desktop via MCP
Soroka
Personal Telegram knowledge base — forward anything, search via DM. Hybrid SQLite + FTS5 + vector + voice, MCP server for Claude.
Opencode Obsidian Knowledge Workflow
7 AKU-architected skills for OpenCode + Obsidian MCP: obsidian-mcp, inbox-triage, connection-review, weekly-synthesis, context-maintenance, vault-health-feedback, note-promotion.…
Flint Note MCP
Agent-first note-taking system
Moldavite
Your thoughts, forged from cosmic impact. A local-first, privacy-first Markdown notes app with a built-in MCP server, for macOS and Windows.
Gaios
Open-source AI Operating System (AIOS) blueprint for Claude Code & Codex — turn any agent into your personal second brain + Chief of Staff: skills, self-verifying workflows, a sec…
Fablesecondbrain
Public, source-cited Fable 5, Mythos, Claude Code, and agent-operations second brain. Not affiliated with Anthropic.
Compabob
A customizable Claude Code setup for knowledge workers: agents, safety hooks, skills, memory, and an Obsidian knowledge base. Clone, run setup, make it yours.
Bok
Local-first Markdown memory for AI agents · 跨 Agent 本地长期记忆系统
MasterVault
An orientation protocol for LLM sessions — plus a curated Claude skills collection
Para Workspace
🌌 PARA Workspace is an open-source workspace framework that defines how humans and AI agents organize knowledge and collaborate on projects. It ships as a repo containing a kernel…
Meowary
AI-powered work journal template for software developers. PARA structure, Bullet Journal daily rhythm, Zettelkasten knowledge graph with semantic search, and structured coding wor…
Second Brain Engine
A general-purpose second-brain engine that auto-captures conversations and recalls them via semantic search + linked notes (graph)
Obsidian Second Brain
MCP server for Obsidian-based second brain memory using PARA methodology
Roverb
Roverb — a personal AI memory you write to from Claude/Codex and recall anywhere, over MCP.
Personal Ontology
Evidence-aware personal knowledge system for AI agents: schema-governed Obsidian vault, proposal-gated MCP gateway, and the skills around it / 面向 AI Agent 的个人本体：Vault + 网关 + Skills
Cortex MCP
Self-hosted MCP server that lets Claude, ChatGPT, Meta Muse and any MCP client read and write one Markdown vault (Obsidian-compatible). Go, OAuth 2.1 with passkeys, no shell, no h…
Memstem
Unified memory and skill infrastructure for AI agents — pull-based ingestion across Claude Code, OpenClaw, Codex, Cursor, and more. Markdown canonical + SQLite hybrid index + MCP-…
Second Brain System
A second brain an AI keeps alive with you: a plain-text graph database (Obsidian + git) that separates durable knowledge from daily operation. Bilingual guide, schema & templates.
Heptabrain
Heptabase + Claude Code = AI-powered Zettelkasten with dimensional elevation