"Testing subscribe functionality on a Python 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

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

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

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.

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

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

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

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

Cross-check a factual claim against a verified knowledge graph before you assert it. Never guesses.

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

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

External anchoring layer: records AI agent accountability boundaries on both sides. Content-blind.

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

People + life-in-days knowledge for AI agents. Public MCP; x402 on Base; OAuth for private tools.