Holiday Calendar

com.modernmustardseed/holiday-calendar · starter.modernmustardseed.com · MCP, Website

U.S. federal holidays with observed dates and business-day math. Example from an open-source kit.

Name and description as published by MCP Registry

Live

Last successful check: 26 Oct 2026, 05:16 UTC.

At starter.modernmustardseed.com, its best endpoint.

https://starter.modernmustardseed.com/holidayshttps://starter.modernmustardseed.com/docs/holidays

MCP: addrbook sends an initialize and a tools/list. It never calls a tool. Website: addrbook loads the page.

Listed by: MCP Registrycom.modernmustardseed/holiday-calendarlast seen 25 Oct, 17:50 UTC
Wallets named: None in its listings
Listed since: 25 Oct 2026, 17:50 UTC

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
starter.modernmustardseed.com	MCP	Live	26 Oct, 05:16	26 Oct, 05:16	100%	100%	5
starter.modernmustardseed.com	Website	Live	26 Oct, 05:13	26 Oct, 05:13	100%	100%	—