"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.

Enables MCP clients to give AI agents a shared, persistent Graph-RAG memory backed by an Obsidian-native vault, with hybrid search, token-budgeted recall, and memory updates.

MCP server that ingests YouTube videos and podcasts, making them searchable with timestamps and deep links to exact moments.

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.

Turns an Obsidian vault of plain Markdown notes into memory shared by every Claude client, so notes, people, meetings, and follow-ups carry across chats and devices. Provides tools to search, read, capture, write, and link notes, and to track people, organizations, connections, and interactions.

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.

A second brain in one cloud-drive folder that your AI agent reads, writes and keeps tidy.

Combines structured sequential thinking with batch operation execution, enabling step-by-step reasoning with revision/branching capabilities and chained operations with variable piping between steps.

Provides an intelligent, graph-based memory system for LLM agents using the Zettelkasten principle, enabling automatic note construction, semantic linking, memory evolution, and autonomous graph maintenance with background optimization processes.

Provides real-time access to Japanese building standards laws and regulations from e-Gov API, helping prevent AI hallucinations by validating citations against original legal texts.

Simulates an Alexa+ booking assistant with MCP tools to preview, approve, change, and recover reservations, preventing duplicates and preserving user edits.

Serves a PARA-structured, Obsidian-compatible Markdown vault as read tools plus a constrained capture tool that only creates new notes in the inbox, enabling MCP clients to read and capture to a second brain.

Provides comprehensive building and office address information queries for enterprises in China, including fuzzy enterprise search, office address details and statistics, and building information queries to support geographical distribution and occupancy analysis.

Turns an Obsidian vault into live, private context for Claude and other MCP clients, enabling identity-aware search, project briefings, graph traversal, recent-note retrieval, captures, and memory writes directly against the vault.

Self-hosted team bus for AI agents: cross-machine handoffs, check-in, and shared gotchas.

Governance framework for LLM agents. Exposes seven mechanically-enforced rules plus tools for preflight file protection, audit-chain verification, session handoff and worklog templates, MCP config auditing, and an emergency kill switch.

Automatically analyzes codebases and generates beautiful Mintlify-style documentation with API references, code examples, and changelogs. Keeps documentation synchronized with code changes across multiple programming languages.

Provides standardized brand guidelines and structured content templates for marketing assets like blogs, emails, and social media. It serves as a central source of truth for brand voice and strategy through an extensible file-based system.

Enables hybrid dense and BM25 search over a markdown vault, with tools for reading, writing, grepping, and managing notes through any MCP-compatible client.

Enables querying gene expression experiments, brain region structure ontologies, and in-situ hybridization datasets from the Allen Institute's Brain Atlas public API.

Provides intelligent conversation memory storage using DuckDB, with support for multiple storage backends and automatic memory consolidation.

A self-hosted second brain MCP server that enables capturing thoughts with deduplication and semantic search using local embeddings and PostgreSQL with pgvector, all running on your own hardware.

Enables Claude Code to search, read, create, edit, rename, and delete notes in a shared self-hosted markdown vault, and to inspect backlinks, outgoing links, outlines, tags, properties, daily notes, unresolved links, orphans, dead-ends, and templates over Streamable HTTP with bearer-token authentication.

A cognitive memory system for persistent knowledge graph storage across multiple Claude installations using Supabase, enabling shared memory and concurrent access.

A long-term emotional memory system for Claude, enabling persistent, cross-conversation memory with emotional tagging using Russell's valence/arousal model and natural forgetting curves.

Myco Brain gives AI agents persistent, source-traceable memory and a knowledge graph on your own Postgres. Capture decisions, repos, and docs, then recall them across sessions with every answer traceable to its source via brain_why. Self-hosted and keyless on local Ollama; facts earn confidence from corroboration and supersede on contradiction, so agents reason from truth, not noise.

Exposes a Brain wiki to other agents, enabling reading, searching, and append-only writes to notes and journals.

A self-hosted MCP knowledge server that gives agents a filesystem-shaped store of rules, context, skills, and granted connections — opened in full for standing rules and as an index otherwise, then listed, searched, and read on demand. Agents can only propose diffs and new entries (reviewable and correctable by the owner) and receive credentials for exactly the connections they're bound to.

Enables AI assistants like Claude and Codex to read, write, search, and traverse Markdown notes stored in a self-hosted knowledge base.

Enables an AI assistant to manage a shared household state through nine MCP tools covering pantry lookups, grocery lists, meal plans, chore logging, morning briefs, and a single-call atomic restock workflow that checks the meal plan and pantry, skips items already listed, and adds what's missing.