WorkdayAPI

dev.workers.mike-tusa.workdayapiPublished by workdayapi.mike-tusa.workers.devOfficial publisherv0.2.0Updated Oct 25, 2026

Business-day and public-holiday math for 29 countries: add business days, days between, holidays.

VerifiedStreamable HTTPWeb executableProductivity & WorkflowData & Analytics

Overview

AI-generated overview

A remote MCP server for business-day and public-holiday calculations across 29 countries, letting an assistant add business days, count them, and check holidays

What you can do
List supported countries, their regions and the supported year range (2020-2035). Retrieve public, bank and observance holidays for a country and year, with local names, types and source links. Check whether a date is a business day, with the reason and the previous and next business days. Add or subtract business days from a date, skipping weekends and holidays. Count business days between two dates, with business, weekend and holiday totals and the holidays in the range.
When to use it
Useful when an assistant needs to schedule or plan around working days, such as setting deadlines, estimating delivery dates, or checking whether a date falls on a weekend or public holiday in a specific country and region.
Requirements
A remote streamable HTTP endpoint; no local runtime or package is needed. It works without a key; an optional Authorization header with a bearer key raises rate limits.
Before you install
All five tools are read-only and no data is written or changed. The optional Authorization header carries a secret key, so keep it out of shared logs. Requests go to a third-party hosted service, and usage is subject to its rate limits.

Installation

In SourceWeft

  1. Open WorkdayAPI 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.mike-tusa.workdayapi%2Fworkdayapi/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": {
    "workdayapi": {
      "type": "http",
      "url": "https://workdayapi.mike-tusa.workers.dev/mcp"
    }
  }
}

Tools

5

get_holidays

List public holidays for a country and year

List the public (and optionally bank/observance) holidays for one country (and region) in one year, 2020-2035, with local names, types and official source links. Read-only. Same data, cache and limits as GET /v1/holidays.

Parametersyearrequiredtypesregioncountryrequired

is_business_day

Check whether a date is a business day

Check whether a date is a business day in a country (and region), considering weekends and public holidays. Returns the reason (weekend or holiday name) plus the previous and next business days. Read-only. Same engine, cache and limits as GET /v1/is-business-day.

Parametersdaterequiredtypesregioncountryrequiredweekend

add_business_days

Add or subtract business days from a date

Add (or, with a negative number, subtract) business days to a date, skipping weekends and public holidays of the country (and region). Returns the result date and the holidays skipped. Read-only. Same engine, cache and limits as GET /v1/add.

Parametersdaterequireddaysrequiredtypesregioncountryrequiredweekend

business_days_between

Count business days between two dates

Count business days between two dates in a country (and region), excluding weekends and public holidays. The end date is excluded unless inclusive is true. Returns business, weekend and holiday day counts and the holidays in the range. Read-only. Same engine, cache and limits as GET /v1/between.

Parameterstorequiredfromrequiredtypesregioncountryrequiredweekendinclusive

list_countries

List supported countries and regions

List the supported countries (ISO codes), their regions and the supported year range. Read-only. Same data and limits as GET /v1/countries.

Takes no parameters.

Version history

1
  1. v0.2.0LatestOct 12, 2026

Score

72% 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

    Publish an icon in the registry entry.

  • 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.