The Bizday MCP server,
connected in one click.
Cited US federal and Reserve Bank business days for agents. Connect the official Bizday MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Bizday to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http bizday https://isitabizday.com/mcpRun in your terminal, then restart Claude Code.
Bizday · https://isitabizday.com/mcp
What your AI can do with Bizday
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “list_calendars”: Shipped calendars: id, name, source URL, Saturday and Sunday rules, coverage, last verified, and changelog. us-federal-opm is the default. u.”
“Use “list_holidays”: Holiday rows for one year. us-federal-opm and us-fed-banking return the eleven nationwide legal public holidays. On us-fed-banking, observed.”
“Use “is_business_day”: 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 Reserv.”
“Use “add_business_days”: 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. da.”
How secure is the Bizday MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Bizday holds up.
Official endpoint
Operated by Bizday (isitabizday.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Bizday adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Bizday
Choose Bizday in the gate directory. No sign-in needed.
Use it anywhere
Bizday's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Bizday exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
list_calendars — Shipped calendars: id, name, source URL, Saturday and Sunday rules, coverage, last verified, and changelog. us-federal-opm is the default. u
list_holidays — 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_business_day — 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 Reserv
add_business_days — 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. da
count_business_days — How many business days are in the inclusive span from start through end, matching Excel NETWORKDAYS. Negative when end is earlier. The span
roll_date — 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
frcp_6a_deadline — Count a period stated in days under Fed. R. Civ. P. 6(a)(1). Exclude the trigger day. Count every calendar day, including intermediate Satur
report_discrepancy — Store a suspected wrong closing for later review. Requires calendar, date, claim, and source_url. The report is not applied to either calend
Who runs the Bizday MCP server?
The Bizday MCP server at a glance
https://isitabizday.com/mcpQuestions, answered
Is there an official Bizday MCP server?
Yes — Bizday operates its own remote MCP server at isitabizday.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Bizday to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Bizday in the directory. No account or sign-in is needed. From then on, Bizday's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Bizday runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Bizday MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Bizday in minutes. No credit card required.
Connect more than just Bizday
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Bizday in: Claude · Claude Code · ChatGPT · Cursor · VS Code