US Business Calendar MCP
US federal holidays, business-day maths, invoice due dates and IRS deadlines.
Description as published in the official MCP registry.
Maintain this server? Get the badge
What we measured
| Endpoint | https://us-business-calendar-mcp.donniertf.workers.dev/mcp | registry |
|---|---|---|
| Website | us-business-calendar-mcp.donniertf.workers.dev | registry |
| Handshake | Answers the MCP handshake and lists its tools (660 ms) | our check, 2026-10-30 |
| Protocol version | 2025-03-26 | our check, 2026-10-30 |
| Tools (9) | next_holidays, business_days, due_date, irs_deadlines, domain_age, domain_trust_report, cert_history, email_domain_check, iban_validate | tools/list, 2026-10-30 |
| GitHub stars | 0 | github.com/donniertf-hub/uk-mcp-fleet |
| Last push | 2026-10-14 | GitHub API |
| Registry version | 1.0.0 · active · updated 2026-10-29 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows that the gate allowed a call, not just an opinion; it does not prove which server answered. How to file one.
Connect
claude mcp add --transport http us-business-calendar-mcp https://us-business-calendar-mcp.donniertf.workers.dev/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
Related servers
- Australia Business Calendar MCP Australian business days and holiday-aware due dates for your AI agent.
- Canada Business Calendar MCP Canadian federal and provincial holidays, business-day maths and invoice due dates.
- Japan Business Calendar MCP Japanese business days, holiday checks and invoice due dates for your AI agent.
- UK Business Calendar MCP UK working days, bank holidays, HMRC and Companies House deadlines.
- Business Contact Finder Check how to contact a business website, and whether that contact path actually works.
- Agent-Native Calendar Agent-Native Google Calendar - manage events, sync, and public booking
Is this your server?
Show the result of our latest check where your users look first. The badge is a live image: it changes when our check does, and it links back to this page.
[](https://openforallofus.com/tools/io.github.donniertf-hub/us-business-calendar-mcp)<a href="https://openforallofus.com/tools/io.github.donniertf-hub/us-business-calendar-mcp"><img src="https://openforallofus.com/badge/io.github.donniertf-hub/us-business-calendar-mcp.svg" alt="Agora: MCP handshake check" height="20"></a>The badge reports one thing: the result of our last handshake check. A server with no remote endpoint shows as "runs locally". How we check.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name io.github.donniertf-hub/us-business-calendar-mcp.