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Business Day Calendars

dev.workers.quietworklabs.business-days/business-days · v1.0.0

NYSE, Federal Reserve, TARGET2 and UK business days, holidays and T+N settlement dates.

Connect Remote server

Terminal
claude mcp add --transport http business-days https://business-days.quietworklabs.workers.dev/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "business-days": {
      "url": "https://business-days.quietworklabs.workers.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "business-days": {
      "type": "http",
      "url": "https://business-days.quietworklabs.workers.dev/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://business-days.quietworklabs.workers.dev/mcp

Tools 6 found in our last check

  • 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 x402 (Base); the first 5 calls per day…

  • 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 per day per client are free.

  • 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 call via x402 (Base); the first 5 calls p…

  • 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. Price: $0.001 USDC per call via x402 (Ba…

  • 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 call via x402 (Base); the first 5 calls…

  • 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 substitute days. Weekend-only holidays…

Details

Endpointhttps://business-days.quietworklabs.workers.dev/mcp (Streamable HTTP)
First published18 Oct 2026
Last updated18 Oct 2026
Registry namedev.workers.quietworklabs.business-days/business-days

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