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

Persistent, semantically-searchable memory for AI agents using local PostgreSQL, pgvector, and Ollama embeddings, exposed via MCP with hybrid retrieval, knowledge graph, and auto-recall hook.

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.

Self-hosted semantic memory layer for Claude and MCP-compatible AI clients. Store notes, search by meaning not keywords, and recall relevant context automatically across sessions. Runs free on Cloudflare Workers, D1, Vectorize, and Workers AI

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

Provides tools to retrieve, ingest, and reindex a serverless personal knowledge base built from Obsidian wiki and external files, with hybrid semantic + keyword search via the Model Context Protocol.

A semantic search MCP server for codebases that uses OpenAI embeddings to understand natural language queries and find relevant code.

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.

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 persistent memory server for AI tools like Claude, ChatGPT, and Cursor, enabling shared context across platforms.

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.

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.

A personal second brain on Cloudflare Workers that stores knowledge as a semantic graph with auto-linking, deduplication, and MCP tools for AI agents to save, search, and connect information.

MCP server that gives any AI coding tool a structured second opinion from another AI provider.

A standalone Node MCP server that provides semantic search, knowledge graph, and vault editing over an Obsidian vault. It runs locally as a single stdio process without requiring an Obsidian plugin for core functionality.

Persistent operational state for AI agents. Decisions, plans, priorities, and patterns that survive across sessions. Not conversation logs; structured project state with enforcement.

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.

A secure, read-only MCP server for AI-powered system monitoring. It provides real-time OS metrics, config discovery, and safe log tailing to enable autonomous infrastructure audits without shell access risks.