MCP server

Business Day Calendars

dev.workers.quietworklabs.business-days/business-days

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

6

Token cost

About 1,395 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http business-days https://business-days.quietworklabs.workers.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.business-days]
url = "https://business-days.quietworklabs.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"business-days":{"httpUrl":"https://business-days.quietworklabs.workers.dev/mcp"}}}

Cursor

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

VS Code

{"servers":{"business-days":{"type":"http","url":"https://business-days.quietworklabs.workers.dev/mcp"}}}

Antigravity

agy mcp add business-days https://business-days.quietworklabs.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"business-days","server_url":"https://business-days.quietworklabs.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"business-days","server_url":"https://business-days.quietworklabs.workers.dev/mcp"}

Tools

• add_business_days ~232 tokens
  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.
• adjust_date ~261 tokens
  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 per day per client ar
• business_days_between ~279 tokens
  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 (Base); the first 5 call
• is_business_day ~211 tokens
  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 per client are free.
• list_holidays ~206 tokens
  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 with no weekday clos
• settlement_date ~206 tokens
  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 per day per client are

Browse

• Calendars
• Payments
• Invoicing and accounting
• Stocks and markets

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