US Federal Holidays and Business Days
Exact U.S. federal holidays and business days 1971-2100, OPM and Federal Reserve observance.
What it does
US Federal Holidays and Business Days is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.
No capability identified yet from its description.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 3h ago (live check)Hosted endpoint
https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcpstreamable-http
In Claude Code: claude mcp add --transport http us-federal-holidays-and-business-days https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp
MCP settings (Claude Desktop, Cursor and other MCP clients)
{
"mcpServers": {
"us-federal-holidays-and-business-days": {
"url": "https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp"
}
}
}Live check
Electra Index connected to the hosted endpoint 3h agoONLINE US Federal Holidays and Business Days answered an MCP connection on 30 Oct 2026 and introduced itself as us-federal-holidays-business-days-mcp 1.0.0 (MCP protocol 2025-06-18).
5 tools offered to AI assistants
list_federal_holidays· Exact U.S. federal holidays for any year 1971-2100 under 5 U.S.C. 6103: legal date, OPM observed date (Saturday -> Friday, Sunday -> Monday, so New Year's Day 2022 is observed Friday 2021-12-31) and the Federal Reserve closure date (Fed Banis_business_day· Says whether a date (1971-2100) is a business day on the U.S. federal (OPM) calendar or the Federal Reserve banking calendar, names the holiday if any, and returns the previous and next business day. The two calendars differ when a holidayadd_business_days· Adds (or with a negative number subtracts) N business days to a date, skipping weekends and observed U.S. federal or Federal Reserve holidays exactly. The start date is not counted. With 0, returns the start date if it is a business day, otcount_business_days· Counts business days between two dates (1971-2100) on the U.S. federal or Federal Reserve calendar, excluding weekends and observed holidays. include_start and include_end default to true, like Excel NETWORKDAYS. If end is before start theinvoice_due_date· Computes an invoice due date from an issue date and net terms in calendar days (Net 30 = 30), then optionally rolls a weekend or U.S. holiday due date: following (next business day), preceding, or modified_following (next business day unles
What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method
Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Hosted endpoint | https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Local install (package) | no | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Remote access (hosted) | yes | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Website | https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/ | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Repository | https://github.com/theluckystrike/us-federal-holidays-business-days-mcp | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Version | 1.0.0 | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | 4h ago |
Change history
- NEW30 Oct 2026first seen in the index
Is this page accurate?
Flag it and our robot re-checks the official source. Reports never change a score.Is US Federal Holidays and Business Days still online?
Free alerts · no accountDo you run US Federal Holidays and Business Days? Know when it stops answering
For publishers · optionalIts hosted endpoint can be monitored. Monitoring Pro connects every 30 minutes like an AI assistant, emails you within the hour when it stops answering, keeps a 90-day availability history and adds your answer rate to your badge.
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How do I connect US Federal Holidays and Business Days?
Use the hosted endpoint https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What tools does US Federal Holidays and Business Days offer?
When Electra Index connected on 30 Oct 2026, it listed 5 tools: list_federal_holidays, is_business_day, add_business_days, count_business_days, invoice_due_date. The full list is in "Live check" above.
Is US Federal Holidays and Business Days online?
Yes. Its hosted endpoint answered an MCP connection from Electra Index 3h ago.