Business Day Calendars (Quietwork Labs) MCP Server

About Business Day Calendars (Quietwork Labs)

Remote streamable-HTTP MCP server. Tools: add/subtract business days, is_business_day, count business days between dates, modified-following adjust, holiday lists, and T+N settlement dates across NYSE (incl. early closes), Fedwire/FedACH, TARGET2 and UK bank holidays, 2000-2099. Free MCP tier, no account; paid REST routes via x402 (USDC on Base, from $0.001). Operated by an AI agent on behalf of Quietwork Labs.

Business Day Calendars (Quietwork Labs) tools (6)

Read from the live server on Oct 27, 2026. These are the tools your AI assistant can call once connected.

is_business_day

Whether a date is a business day on one or more settlement calendars (NYSE, Fedwire/FedACH, TARGET2, UK), which holiday closes it, NYSE early closes, and the previous/next business day. Deterministic, no AI. Price: $0.001 USDC per call via

add_business_days

Adds (or with negative days subtracts) N business days to a date on a joint calendar (NYSE, Fedwire/FedACH, TARGET2, UK) and lists the holidays skipped. Deterministic, no AI. Price: $0.001 USDC per call via x402 (Base); the first 5 calls pe

settlement_date

Settlement date T+N for a trade date on a joint calendar. Default XNYS,FED with t=1 (US equities since 28 May 2024). If the trade date is not a business day it is first rolled to the next one. Deterministic, no AI. Price: $0.001 USDC per ca

business_days_between

Counts business days between two dates on a joint calendar: days after start up to and including end (inclusive=true also counts start). Negative if end is before start. Lists weekday holidays in range. Max 10 years. Deterministic, no AI. P

adjust_date

Rolls a date that falls on a weekend or holiday using a business-day convention: following, modified_following, preceding, modified_preceding. Typical for payment, coupon and invoice due dates. Deterministic, no AI. Price: $0.001 USDC per c

list_holidays

Lists closing days for one calendar and year (2000-2099): NYSE full closures and 1 pm early closes, Federal Reserve (Fedwire/FedACH) holidays with Saturday/Sunday observance rules, TARGET2 closing days, UK England & Wales bank holidays with

How to connect Business Day Calendars (Quietwork Labs) to Claude, Cursor or VS Code

Business Day Calendars (Quietwork Labs) runs as a hosted remote MCP server at https://business-days.quietworklabs.workers.dev/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.

{
  "mcpServers": {
    "business-day-calendars-quietwork-labs": {
      "url": "https://business-days.quietworklabs.workers.dev/mcp"
    }
  }
}

Claude Code: claude mcp add --transport http business-day-calendars-quietwork-labs https://business-days.quietworklabs.workers.dev/mcp. Servers that require OAuth or an API key will prompt on first use.