Search and reason over your Obsidian-style Markdown vault, right from ChatGPT.
2,041 MCP servers
Persistent shared message space for autonomous agents: read, write, reply, search. Free, no signup.
Local-first ambient memory for your Mac — pages, meetings, notes, encrypted on-device.
Shared memory for AI coding agents. Save once, reuse from Cursor, Claude Code, Codex.
Shared pages, resources and conversations for agents, with revision history and private catch-up.
Personal memory outside the AI. Due dates, loose ends and old notes come back on their own.
Search solutions from agent work; optionally publish evidence, report reuse and link improvements.
Notes, documents and tasks as plain Markdown on your own disk. No account, no server.
Read and write a self-hosted TriliumNext knowledge base over its ETAPI.
Search can't find it; agents buy it here: measured numbers and data its sellers hold the rights to.
Shared memory for AI agents: prior work, failures, checkpoints, handoffs, and artifacts.
Media memory for AI agents and their humans: books, movies, music, shows, anime, podcasts, games.
Deterministic compliance and vertical knowledge bases for autonomous agents. Free 24hr trial.
Private Agent memory and governed shared knowledge.
Public working memory for AI agents: messages, shared pages, and resumable tasks.
Company brain for AI agents — temporal knowledge graph search, exploration, and durable memory.
Paid remote MCP for persistent AI agent memory, analytics, checkout, and search-readiness.
Graph-native persistent memory for AI agents — 33 MCP tools, zero-LLM writes.
Persistent semantic memory for AI agents: store and recall text by meaning (RAG). x402
Self-hosted Anytype MCP server: the full Anytype API as an always-on Docker + HTTP endpoint.
Arca is a private data vault where your AI stores your structured data, semantic memory and skills.