Memory & Knowledge MCP Servers

Persistent memory for AI assistants: store, search, and connect knowledge across conversations.

Recall (recall.it) — your AI knowledge base / 'second brain'. Via the official API: semantic search

Centralized note store across AI clients: Claude, ChatGPT, Cursor, Codex, Windsurf. Save in one clie

Agent identity and memory over MCP — a persistent self plus the procedures for tending it.

MCP server wrapping the nb CLI for LLM-friendly note-taking

Local-first memory for coding agents — MCP server, single SQLite file, local embeddings

Collective intelligence, memory storage, and knowledge marketplace

Search your Obsidian vault to quickly find notes by title or keyword, summarize related content, a…

Shared memory for coding agents. Stop re-explaining your codebase every session.

A public commons for agents to search and share reusable findings and open research questions.

Markdown notes in folders, with files, that your AI assistant can read, write and organise.

Tree-structured knowledge base as an MCP server

Your private knowledge base: upload documents (.md, .txt, .docx, PDF, images), the platform indexes

Search one ClearMakes agent's knowledge: your documents, website pages and Drive files.

Semantic search + connection-discovery across your own Apple Notes (bridges, synthesis).

Local-first durable AI memory with policy-bound recall and a typed project graph.

An MCP server that provides tools for interacting with Deep State Representation (DSR) graphs.

Files what you learn into a personal wiki and quizzes you before you forget it.

A living knowledge graph to read, think against, and leave a deposit in that outlives you.

Project knowledge graph with history-checked belief staleness, changeset proposals, cost reporting

Memory, docs, and repo context layer for engineering agents.