"A service for booking flight tickets" matching MCP connectors:

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

User-owned memory for AI agents, Copilot, Claude, IDEs, CLIs, and chat apps over remote MCP.

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

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.

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.

Path-scoped team memories, rules and skills for Claude Code, Cursor, Codex and other MCP clients.

**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

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

Shared, verifiable memory for AI agents and robots: signed tokens that resolve and verify offline.

Structured Wikipedia + Wikidata for AI agents. Clean JSON, not HTML. Free, no auth.

GRIN-scored news for agents: discover by verdict, pull full analysis, traverse extraction graphs.

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

Hosted persistent memory for AI agents. No signup, no install—one MCP URL to remember & recall.

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

Sovereign Agent OS — Persistent Memory, Governance & Compliance for AI Agents.

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

Genesis certificates, lineage, and cascading recalls: birth certificates + bloodlines for the agent

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