@icyn/date-mcp

@icyn/date-mcp

MCP server that gives AI agents date context — Chinese lunar calendar, 24 solar terms, holidays and workdays for 12 regions (+ US states, German Länder, UK nations). Offline. No API key. Every answer says where it came from (official / baseline / predicted) and how sure it is.

Use

Claude Desktop / Cursor / any MCP client:

{ "mcpServers": { "icyn-date": { "command": "npx", "args": ["-y", "@icyn/date-mcp"] } } }

Tools: date_context, is_workday, holidays, workdays, next_long_weekend, holiday_eve, lunar, next_lunar_date, solar_terms, regions_observing, regions.

Example — "下周三是中国的工作日吗？" → is_workday {date:"2026-09-23", region:"CN"} → 2026-09-23 in CN: workday (official, certain).

Library behind it: @icyn/date.