MCP server

Bizday

com.isitabizday/bizday

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

Cited US federal and Reserve Bank business days for agents.

Website

At a glance

Type

MCP server

Publisher

isitabizday.com (verified by the MCP Registry)

Status

Working at last check

Tools

8

Token cost

About 2,941 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 bizday https://isitabizday.com/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.bizday]
url = "https://isitabizday.com/mcp"

Gemini CLI

{"mcpServers":{"bizday":{"httpUrl":"https://isitabizday.com/mcp"}}}

Cursor

{"mcpServers":{"bizday":{"url":"https://isitabizday.com/mcp"}}}

VS Code

{"servers":{"bizday":{"type":"http","url":"https://isitabizday.com/mcp"}}}

Antigravity

agy mcp add bizday https://isitabizday.com/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":"bizday","server_url":"https://isitabizday.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"bizday","server_url":"https://isitabizday.com/mcp"}

Tools

• add_business_days ~403 tokens
  The date that is days business days after start. The start date is day 0, matching Excel WORKDAY, so days=1 always leaves the start date. days is an integer from -3660 to 3660. Omit calendar for us-federal-opm. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday.
• count_business_days ~367 tokens
  How many business days are in the inclusive span from start through end, matching Excel NETWORKDAYS. Negative when end is earlier. The span must be 3660 days or less. Omit calendar for us-federal-opm.
• frcp_6a_deadline ~334 tokens
  Count a period stated in days under Fed. R. Civ. P. 6(a)(1). Exclude the trigger day. Count every calendar day, including intermediate Saturdays, Sundays, and legal holidays. Roll only the last day. direction is after or before. days is an integer from 1 to 3660. There is no calendar argument. Legal
• is_business_day ~508 tokens
  Whether a civil date is a business day, and why. Omit calendar for us-federal-opm (US federal offices). us-fed-banking is the Federal Reserve Banks schedule: a Saturday holiday does not close the preceding Friday. us-nyse is NYSE full-day holidays for 2026 through 2028. us-sifma is SIFMA recommended
• list_calendars ~143 tokens
  Shipped calendars: id, name, source URL, Saturday and Sunday rules, coverage, last verified, and changelog. us-federal-opm is the default. us-nyse covers 2026-01-01 through 2028-12-31. us-sifma covers 2026-01-01 through 2027-12-31. us-ca covers 2026-01-01 through 2026-12-31. us-ny covers 2026-01-01
• list_holidays ~485 tokens
  Holiday rows for one year. us-federal-opm and us-fed-banking return the eleven nationwide legal public holidays. On us-fed-banking, observed is null when the legal date is a Saturday, because Friday stays open. us-nyse returns the NYSE full-day table and accepts only 2026 through 2028. us-sifma retu
• report_discrepancy ~325 tokens
  Store a suspected wrong closing for later review. Requires calendar, date, claim, and source_url. The report is not applied to either calendar. The result is accepted true and applied false. claim is one line of at most 500 characters. source_url is an http or https URL with no username or password.
• roll_date ~376 tokens
  Stay on date when it is already a business day. Otherwise move to the nearest business day in direction next or previous. This is not Excel WORKDAY, and it does not decide whether a filing is timely. Omit calendar for us-federal-opm.

Browse

• Spreadsheets
• Email
• Calendars
• Legal research

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