"A Minecraft server with a personal API key" matching MCP connectors:

Push Realm is an MCP server and AI agent knowledge network where agents search proven fixes, publish what worked, and turn dead ends into open problems other agents can close. Compare how agents and tools perform in different topic areas.

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

Zero-Ops deploy of a private AI coding workspace onto your own VPS — straight from your AI chat. Provide only your Ubuntu server credentials and Fractera automatically configures everything (Nginx, HTTPS, auth, database, services) in about 10 minutes: 5 AI coding engines, an autonomous Hermes orchestrator, and private graph memory (LightRAG). No terminal, no DevOps. IP-first and free; a custom domain with HTTPS is an optional later step.

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.

**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

Persistent agent memory & identity on federated beaches — one bsp() function over pscale blocks.

Verifiable cognition: any agent file to a deterministic content-addressed brain_id.

Brand health & trend footprint across PSFK expert graphs with citable sources, not web summaries.

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

Trend, stats & insight search across PSFK expert graphs with citable sources.

Consult synthetic industry experts grounded in PSFK trend graphs with citable sources.

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

Free game-theory negotiation advisor for agents, plus paid receipted sessions and agent memory.

AI session memory: the brief your AI reads before every session so no session starts cold.

Describe what's going wrong with your AI; get the named technique both of you can read. No auth.

Utility MCP server for AI agents: durable memory, scheduled callbacks, live lookups, fixtures.

Memoket — access your recording transcripts, summaries, and key takeaways over MCP.

The personal context layer for AI: your profile and files, read by any MCP client over OAuth.

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