"Checking Domain Name Availability" matching MCP connectors:

Free walking tours & activities in 1,000+ cities — live availability, ratings & booking links.

Semantic search over the Stoic corpus — Marcus Aurelius' Meditations, Seneca's essays, and Epictetus' Discourses, Enchiridion and Fragments. Search by theme or citation, fetch any passage, or get the daily reflection. Public domain translations, no auth.

2,400 castles, fortresses & palaces: name search, nearby, fame ranking, statistics. No key, CC0.

Quotes MCP — citation-grade quote API for public-domain authors.

MCP server for Project Gutenberg — 75,000+ public-domain ebooks with full plain-text retrieval.

Japan data tools for AI agents: calendar (rokuyo), address, name splitting, corporate number lookup