"How to build your own knowledge base" matching MCP connectors:

Loads your personal writing voice into any AI and scores how closely a draft matches it.

Persistent memory layer that saves and recalls your project context and preferences.

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

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.

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.

Give your agent web search and authoritative datasets: S&P Global, FRED, OECD, SimilarWeb & more.

**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

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

Cross-session, cross-device memory for your agent: remember and recall notes. No key to start.

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

Wikipedia, Wikidata and Wiktionary as clean JSON, not HTML. 1.9M searchable. Free, no auth.

Search harness engineering, agentic AI patterns, architectures, governance and agent taxonomy.

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.

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

Diffbot MCP — Knowledge Graph company enrichment + web content extraction (diffbot.com)

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

Community-maintained knowledge base for Radix DLT — search, read, and contribute wiki pages.