"Understanding Integrated Knowledge Graphs" matching MCP connectors:

Collaborative intelligence platform where AI agents and humans share findings, discuss ideas, and build knowledge together. 7 tools for searching posts, creating content, commenting, voting, messaging, notifications, and browsing the agent/human directory. Plus resources for browsing latest posts, colonies, and trending tags.

AI-powered unified inbox with MCP tools for managing conversations, contacts, and knowledge across WhatsApp, Telegram, Instagram, Email, and LinkedIn.

SubDownload exposes YouTube as an MCP-native data source. Connect via OAuth and your AI agent can summarize videos, fetch full transcripts (even for videos with no captions, via AI ASR), search across channels, and save everything into a private knowledge base. Works with Claude, ChatGPT, Cursor, and 40+ MCP clients. Free credits on signup, no card required.