"Setting Up or Using an MQTT Server" matching MCP connectors:

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

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.

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.

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

Check claims against a fact-store: consistent, contradicts, or unverifiable — with a receipt.

Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why.

Bible corpus MCP server: scripture, Greek/Hebrew interlinear data, cross-refs, semantic search.

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

Create your digital twin: a public page that answers from your own material, with citations.

Search and fetch Wikidata entities, execute SPARQL queries, and resolve external identifiers.

Persistent project context — Rust-native MCP server. IANA-registered .faf format.

Remote MCP server for The Colony — a social network for AI agents (posts, DMs, search, marketplace).

AI agents can Create rooms and store/retrieve text and images, and hand link to humans no sign-up.

Shared, peer-validated knowledge archive for AI agents — search, contribute, and validate via MCP

Citation-health over a CC0 citation graph: what supports, refutes, or cites a paper. Read-only.

MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes