US Business Calendar MCP
US federal holidays, business-day maths, invoice due dates and IRS deadlines.
MCP server · by donniertf-hub
About
US Business Calendar MCP is an MCP server published by donniertf-hub. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-29 and have recorded no change since. As of our marketplace pass on 2026-11-06.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http us-business-calendar-mcp https://us-business-calendar-mcp.donniertf.workers.dev/mcp[mcp_servers.us-business-calendar-mcp]
url = "https://us-business-calendar-mcp.donniertf.workers.dev/mcp"{
"mcpServers": {
"us-business-calendar-mcp": {
"url": "https://us-business-calendar-mcp.donniertf.workers.dev/mcp"
}
}
}Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.0 | Forks (GitHub): 0 Stars (GitHub): 0 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
- Became a product we track
- Official MCP Registry: appeared
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Canadian federal and provincial holidays, business-day maths and invoice due dates.
-
Australia Business Calendar MCP
Australian business days and holiday-aware due dates for your AI agent.
-
Public holidays and business-day math (T+N, counts) for many countries; pay per call via x402
-
bizdays io.github.qinisolabs/bizdays
Verified business-day math for AI agents: holidays + per-country weekends, not guesses.
-
Japanese business days, holiday checks and invoice due dates for your AI agent.
-
UK working days, bank holidays, HMRC and Companies House deadlines.
-
Reliable Australian business-day, public-holiday and deadline tools for AI agents.
-
japan-business-calendar-mcp io.github.atushi1841/japan-business-calendar-mcp
Japan business day & holiday calculator MCP. Official holidays + business-day arithmetic, 6 tools.
-
Business-day and public-holiday math for 29 countries: add business days, days between, holidays.
-
openworkdays io.github.SolvoHQ/openworkdays
Zero-signup business-day date-math API: add days, count days between dates, is-business-day.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
AI-native UK accounting for limited companies and sole traders. Track transactions, manage VAT, monitor HMRC deadlines, log expenses, and handle invoices through natural language…
-
Give Claude deep UK accounting knowledge. This plugin replaces the generic finance responses with regulation-aware workflows built specifically for British businesses. It covers…
-
Connect Claude and other AI agents to Merit Aktiva — Estonia's most-used accounting software — and let them handle real bookkeeping safely. Six Claude Code skills that teach…
-
Give Claude deep German accounting knowledge for GmbH, GbR, Einzelunternehmen, and Freiberufler. This plugin replaces the generic finance responses with regulation-aware workflows…
-
AI-powered bookkeeping, invoicing, and tax filing for European entrepreneurs. Manage your business finances directly from Claude — create and send invoices, categorize bank…
Has a listing on Claude Code: claude-plugins-official (5)
-
QuickBooks business insights and actions: financial health briefings across P&L, cash flow, balance sheet and A/R, industry benchmarking, payroll cost analysis, overdue-invoice…
-
Bring Airwallex's global financial infrastructure to Claude. Orchestrate actions across your account in plain language, e.g., set up invoices from a PO, onboard suppliers from…
-
Ask Claude about the contractors you pay through Wingspan, what you owe them, and what is holding up a payment, then onboard contractors and log payments as drafts, with a preview…
-
Carta Investors plugin — skills for querying investor data, performance benchmarks, regulatory reporting, AGM deck generation, brand extraction, and more via the Carta MCP Server.
-
Guides AI assistants that use the NetSuite AI Connector: tool-selection order, output formatting, NetSuite domain knowledge, multi-subsidiary and currency handling, and SuiteQL…
Has a listing on Claude: knowledge-work-plugins (5)
-
QuickBooks business insights and actions: financial health briefings across P&L, cash flow, balance sheet and A/R, industry benchmarking, payroll cost analysis, overdue-invoice…
-
Streamline finance and accounting workflows, from journal entries and reconciliation to financial statements and variance analysis. Speed up audit prep, month-end close, and…
-
Bring Airwallex's global financial infrastructure to Claude. Orchestrate actions across your account in plain language, e.g., set up invoices from a PO, onboard suppliers from…
-
Ask Claude about the contractors you pay through Wingspan, what you owe them, and what is holding up a payment, then onboard contractors and log payments as drafts, with a preview…
-
Carta Investors plugin — skills for querying investor data, performance benchmarks, regulatory reporting, AGM deck generation, brand extraction, and more via the Carta MCP Server.
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Connect Google Calendar for scheduling, availability, daily briefs, and event management.
-
Connect Microsoft Outlook Calendar for scheduling, daily briefs, event prep, and safe meeting changes.
-
Develop your payments integration faster with the ability to create products, prices, and payment links directly in ChatGPT. Run your business from ChatGPT with the ability to…
-
Public equity investing workflows for listed-company research, earnings analysis, valuation, model updates, long/short pitches, catalysts, thesis tracking, ETF/index and…
-
Bring operational data and context into the flow of your ChatGPT conversations. You can ask questions, create and update records, and analyze your data—all through conversation…
Has a listing on Community GitHub marketplaces (5)
-
norman-finance
Connect Norman Finance to your AI for European bookkeeping, invoices and tax workflows. Polish tools include JDG KPiR, sp. z o.o. ledgers, JPK registers, estimates and existing…
-
AI skills (tax rules your AI follows) for MT, NL, DE, IE and GB bundled as Agent Skills, plus the hosted OpenAccountants connector (190+ jurisdictions) and a /openaccountants…
-
Misc Jewish utility skills: shabbat candle-lighting/havdalah, zmanim (GR"A + MG"A), parsha-of-the-week, Hebrew/Gregorian date conversion (sunset-aware), upcoming holidays…
-
Run a faster, provable month-end close. Three deterministic stdlib scripts: a close calendar planner that orders tasks by dependency, finds the critical path and slack, maps WD+n…
-
Jurisdiction-aware banking regulatory agent: 16 product skills, 7 jurisdiction overlays, 4 domain commands. IFRS 9 ECL, Basel III/IV capital and liquidity, AML/KYC/sanctions, bank…
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Mastercard Developers plugin to help build integrations with Mastercard APIs, including best practices and the Mastercard Developers MCP server.
-
Query Anarlog meetings locally, or connect through OAuth to read opted-in Cloud snapshots.
-
See your local Copilot token usage by day, model, and session, and get tips to use it more efficiently.
-
Accept payments and grow your business. Stripe's agent plugin includes best practices, upgrade guidance, and our MCP server.
-
Explore and query TimeBase streams, schemas, QQL, symbols, and server status via MCP.
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
-
workiq-productivity
WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
mobile-app
Build and deploy Power Apps code apps for mobile using Expo (React Native), with native device functionality and Power Platform connectors
Has a listing on Cursor: cursor/plugins (5)
-
Look up workers, organizations, time off, payroll, and recruiting data in Workday.
-
Query expenses, receipts, bills, cards, and travel.
-
Read and write invoices, contacts, reports, and payroll.
-
Work with payroll, employees, contractors, time off, and reports.
-
Query expenses, travel bookings, policies, and cards.
Has a listing on Docker MCP Catalog (5)
Has a listing on Official MCP Registry (5)
-
Canadian federal and provincial holidays, business-day maths and invoice due dates.
-
Australia Business Calendar MCP
Australian business days and holiday-aware due dates for your AI agent.
-
Public holidays and business-day math (T+N, counts) for many countries; pay per call via x402
-
bizdays io.github.qinisolabs/bizdays
Verified business-day math for AI agents: holidays + per-country weekends, not guesses.
-
Japanese business days, holiday checks and invoice due dates for your AI agent.
Has a listing on PyPI (MCP servers) (5)
-
kra-mcp io.github.gabrielmahia/kra-mcp
Kenya tax tools: PAYE calculator (2026 rates), VAT, PIN, filing calendar, withholding. Estimates.
-
GSA Per Diem access readiness, lodging, and meals and incidental expense rates. 7 tools.
-
MCP server for Monarch Money — accounts, transactions, budgets, cashflow, investments, and more
-
US stocks incl. delisted, futures, CPI/macro vintages, point-in-time GEX, 13F, COT, backtests.
-
GSA CALC+ awarded labor ceiling rates from more than 230,000 MAS contract records. 8 tools.
Has a listing on npm registry (MCP servers) (5)
-
NannyKeeper Household Payroll & Taxes
Calculate US household employer (nanny) taxes + run payroll via AI agents. All 50 states.
-
bls-labor-mcp-server io.github.cyanheads/bls-labor-mcp-server
Fetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via MCP.
-
autario-mcp io.github.Autario/autario-mcp
Query 8,000+ verified open datasets (World Bank, Eurostat, FRED, SEC) with stats and charts.
-
Open data from 40+ U.S. government APIs: economy, spending, Congress, health, energy, disasters
-
Real-time & historical exchange rates for 160+ currencies. No API key needed to start.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Want this mark on your plugin in our catalog?
Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works
You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.