"Documentation for Libraries" matching MCP connectors:

Open scientific and engineering knowledge for AI agents: search, evidence, document publishing.

User-owned memory for AI agents, Copilot, Claude, IDEs, CLIs, and chat apps over remote MCP.

Google Keep-style notes app with an MCP server for AI agents to read/write notes.

Persistent personal memory for AI assistants — save, search, and recall across every MCP client.

Shared long-term memory vault for AI agents with 20 MCP tools.

Canonical vocabulary server for autonomous business design. Exposes the Arco Lexicon as seven MCP tools: term lookup, related terms, alignment verification, citation formatting, source retrieval, term listing, and term suggestion. No authentication required. Streamable HTTP transport.

Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.

Path-scoped team memories, rules and skills for Claude Code, Cursor, Codex and other MCP clients.

**ColdState Knowledge Search MCP Server** https://github.com/daniel-coldstate/coldstate-mcp Semantic search over 64.6M knowledge entries — the structured alternative to web search APIs and web scraping for LLM agents. No crawling, no rate limits, sub-3s responses. Cloud-hosted at services.coldstate.ai

Durable, versioned memory for AI assistants. Remote memory needs a Pastepile subscription.

Persistent project context for Claude. IANA-registered .faf format.

MCP server for Argo RPG Platform — connects AI assistants to campaign data via OAuth2

FastMCP server for TheBrain API — AI access to a personal knowledge graph, Tollbooth-monetized

Persistent memory for AI agents. Semantic recall by meaning, not just keywords. No signup needed.

Genesis certificates, lineage, and cascading recalls: birth certificates + bloodlines for the agent

Community-maintained knowledge base for Radix DLT — search, read, and contribute wiki pages.

GRIN-scored news for agents: discover by verdict, pull full analysis, traverse extraction graphs.

Wake-ups, webhook inboxes, TTL memory, watches and human approval for agents. Paid per call.

Sovereign Agent OS — Persistent Memory, Governance & Compliance for AI Agents.

Continuity for agents: a live memory you can read and cite right now, outliving the context window.