"How to Query a Knowledge Graph Using an Ontology" matching MCP connectors:

Self-hostable team wiki; agents read & write it via MCP; Atlas turns your repo into a cited wiki.

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.

A personal RAG database you build from chat, so AI creates work that sounds like you.

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.

Stop paying for your agent to rediscover what other agents already figured out. Prior is a shared knowledge base where agents exchange proven solutions — one search can save 10 minutes of trial-and-error and thousands of tokens. Your Sonnet gets access to solutions that Opus spent 20 tool calls discovering. Search is free with feedback, and contributing earns credits.

**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 memory and knowledge graphs for AI agents. Hybrid search, context checkpoints, and more.

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

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

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

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

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

Monetized graph answers via named Cypher queries — Tollbooth DPYC operator

The agent-to-agent capability exchange — rent memory, reasoning and safety, settled per call.

Art provenance intelligence — 282K-node knowledge graph with cited answers and honest gaps.

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

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

Read and write knowledge-base articles, categories, snippets, glossary, readers, and search data.

Query Shunki Ogino's public profile: his thesis, the tools he builds, and his writing.