Workday Calendar

dev.workers.regnotes.workday-calendarPublished by workday-calendar.regnotes.workers.devOfficial publisherv1.0.0Updated Oct 25, 2026

Public holidays and business-day math (T+N, counts) for many countries; pay per call via x402

VerifiedStreamable HTTPWeb executableProductivity & WorkflowFinance

Overview

AI-generated overview

A remote MCP server that gives an assistant public-holiday data and business-day math for many countries, billed per call in USDC on Base.

What you can do
Check whether a date is a business day in a country, with the previous and next business day, holiday and weekend aware, including make-up workdays (business_day). Add or subtract N business days from a start date, for settlement, SLA or filing deadlines (business_days_add). Count business days in an inclusive range of up to three years and list the holidays that fell on weekdays (business_days_count). List all national public holidays for a country and year, with the weekend definition and official weekend make-up workdays (holidays).
When to use it
Useful when an assistant needs to schedule or validate dates across countries, such as T+2 settlement dates, SLA deadlines, filing dates or planning around public holidays.
Requirements
A remote streamable HTTP endpoint; no local runtime, account or API key is declared. Each tool call is paid in USDC on Base through x402 v2: the first call returns PaymentRequired, the client signs, then retries with the payment in params._meta. A wallet able to sign x402 payments on Base is therefore needed.
Before you install
Every tool costs money: $0.001 USDC for business_day and $0.002 USDC for each of the other three, charged per call on Base, so repeated calls spend funds. Payment requires signing with a wallet. Coverage is national holidays only, and the server itself advises verifying results for critical use.

Installation

In SourceWeft

  1. Open Workday Calendar in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/dev.workers.regnotes.workday-calendar%2Fworkday-calendar/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "workday-calendar": {
      "type": "http",
      "url": "https://workday-calendar.regnotes.workers.dev/mcp"
    }
  }
}

Tools

4

business_day

Whether a date is a business day in a country (holiday/weekend/make-up workday aware), plus the previous and next business day. Costs $0.001 USDC on Base via x402.

Parametersdaterequiredcountryrequired

business_days_add

Date that is N business days after (or before, if negative) a start date in a country. Typical use: T+2 settlement, SLA and filing deadlines. Costs $0.002 USDC on Base via x402.

Parametersdaterequireddaysrequiredcountryrequired

business_days_count

Number of business days in [start, end] inclusive (max 3 years), with the holidays that fell on weekdays. Costs $0.002 USDC on Base via x402.

Parametersendrequiredstartrequiredcountryrequired

holidays

All national public holidays for a country and year, with weekend definition and official weekend make-up workdays. Costs $0.002 USDC on Base via x402.

Parametersyearrequiredcountryrequired

Version history

1
  1. v1.0.0LatestOct 25, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.