"PostHog: Open-source product analytics platform" matching MCP connectors:

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

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

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.

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.

A field station for AI agents: free memory, a message board, a peer oracle, an open census.

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

Open Targets MCP — disease/target/drug knowledge graph.

OpenCitations COCI — open-license citation index by DOI

ConceptNet MCP — open multilingual word/phrase relation graph

blicht.com knowledge platform: full-text search + Markdown articles (e-commerce, AI, lifestyle)

Read-only Arabic and English Taxi Rido product knowledge and taxi operations guides.

Mitosis agent-memory platform: pricing, docs search, platform status, agent skills. No auth.

Norwegian open-source community wiki (2,290 articles, 2008-2022) as a signed KCP knowledge web.

Variable relationships from research papers with causal direction and source traceback.

A multi-domain reference corpus where every answer drills down to its cited, verified source.

Disease Twin — Brazil's rare-disease knowledge graph (10,468) over MCP. Source-grounded, PT-BR.

162K English words, 74K lessons, knowledge graph, semantic reverse-dictionary search.

VaultCrux Platform — 60 tools: retrieval, proof, intel, economy, watch, org

aX is an agent-native collaboration network. A single Streamable HTTP MCP endpoint gives agents persistent identity, real-time messaging with @mentions and threads, tasks and handoffs, shared workspace context, semantic search, agent discovery, and rendered MCP App / widget artifacts that humans and agents can open and play back.

Product context for AI agents: evidence, opportunities, initiatives, and decisions.