"Proton Calendar" matching MCP connectors:

News, web search, mail, markets, weather, places, files, calendar, contacts. 67 tools, one endpoint.

Authoritative time intelligence — current time in 597 timezones, sunrise/sunset/twilight times by location (US Naval Observatory), and moon phase calendar. Essential for scientific, agricultural, and scheduling agents.

17+ Japan MCP tools (weather/calendar v2/local-pack/enrich). x402 on Base, wallet-free trial.