"A system for building an autonomous second brain" matching MCP servers:

Provides a Docker container for managing markdown notes with semantic search and an MCP server to expose brain tools to AI clients like Claude.

This MCP server implements a second brain system, managing unvalidated investigation cases as JSON and validated knowledge as markdown files and skills. It provides tools for creating, updating, promoting cases, managing knowledge files, and performing semantic search.

MCP server that turns a Markdown folder (e.g. Obsidian vault) into a second brain, capturing readings and ideas, connecting them as concepts, and resurfacing related notes on demand.

Enables MCP clients to search and read notes from an Obsidian or markdown vault through four governed tools, with enforced read-only access, a page budget, and path sandboxing.

Turns an Obsidian vault into semantic memory for coding agents, providing read-only semantic search and a human-approved write workflow via MCP.

Enables AI assistants to file notes into a self-hosted Obsidian vault and retrieve them later through structured and semantic search over plain Markdown.

Enables capturing, searching, and organizing Obsidian notes from Telegram via Hermes Agent (MCP).

Enables LLM clients to read, search, create, update, and delete notes in a self-hosted shared memory bank over MCP, using hybrid vector and full-text search with optional summarization.

Enables AI assistants to capture, search, update, and delete notes in a local Markdown vault with automatic categorization and tagging, making knowledge management seamless.

Self-maintaining personal knowledge database — MCP server with figure-level search, auto-wikilinks, and Ebbinghaus-based memory compression

A small, authenticated remote MCP server that lets an AI app safely read and write one GitHub repository, built for a second-brain / Obsidian vault stored on GitHub.

An MCP server that exposes an Obsidian vault to Claude, enabling reading, searching, writing notes, capturing voice thoughts, and managing tasks. It enforces vault filing rules in code, with path confinement and no hard deletes for safety.

Local MCP server that automates an open Obsidian vault through Obsidian's official CLI, offering tools for note creation/update, search, tasks, daily notes, and organization. It uses MCP over STDIO, requires no cloud services, and provides safety/audit features for autonomous writes.

Captures and organizes structured markdown notes from Claude Code sessions with automatic pattern detection, complexity analysis, advanced search, and weekly reports. Everything runs locally without external dependencies.

MCP server that provides persistent, structured memory using an Obsidian vault with the PARA method.

Provides semantic search, note retrieval, source explanation, daily digests, and health checks for a local Obsidian vault, enabling MCP clients like Claude Desktop and Claude Code to query the second brain via natural language.

Enables read-only access to Obsidian vaults with semantic search, tag filtering, and metadata queries. Provides secure, intelligent note retrieval and summarization for LLMs without modifying your vault.

Enables AI agents to store and retrieve project context, bugs, decisions, and session logs by reading and appending markdown files in a local Obsidian vault, without requiring any cloud services.

A private, local AI second brain for Markdown notes, providing hybrid search and read/write tools for MCP-compatible AI clients like Claude and Cursor.

Connects claude.ai to a private GitHub repo of markdown files as a personal second brain, providing guarded read and write tools for knowledge management.