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USPS holiday shipping deadlines MCP server

The USPS send-by dates for Christmas delivery this year by mail class and destination, with the days left from today.

Connect free Source on GitHub

Free. No key, no sign-in, no paid tier. 3 tools.

Can Claude check USPS holiday shipping deadlines?

Connector URL

https://usps-holiday-shipping-deadlines-mcp.lipmichal.workers.dev/mcp

Paste it as a custom connector in Claude, or add it to Claude Code, Cursor or VS Code. Setup for each is below.

What it knows that a model doesn't

A model answers from training data. This server reads the source when you ask.

  • The 2026 USPS recommended send-by dates for delivery by December 25 for Ground Advantage, First-Class Mail, Priority Mail and Priority Mail Express to the lower 48, Alaska, Hawaii, Puerto Rico and territories.
  • International send-by dates by USPS world region and APO/FPO/DPO military dates by ZIP group.
  • The days left from today in US Eastern time and the slowest service still on time. USPS calls these recommendations, not guarantees. UPS and FedEx are not covered.

Sources USPS holiday shipping dates page (usps.com/holiday/holiday-shipping-dates.htm), read at call time, with a built-in copy of the 2026 table as the fallback.

Tools (3)

Read from the live server with tools/list on 2026-11-05.

ToolWhat it does
get_usps_holiday_shipping_deadlines Get USPS holiday shipping deadlines. The USPS recommended send-by dates for delivery before December 25 for the current holiday season, read at call time from usps.com: Ground Advantage, First-Class Mail, Priority Mail and Priority Mail Express to the lower 48 and to Alaska,...
check_holiday_ship_by_date Check if a package still makes Christmas. For a ship date (default today, US Eastern) and a destination, lists each USPS service with its send-by date, days left and whether it is still on time for December 25, and names the slowest (usually cheapest) service still on time.
get_military_mail_deadline Get military mail holiday deadline. USPS holiday send-by dates for December 25 delivery to one APO/FPO/DPO ZIP code (090-099 AE, 340 AA, 962-966 AP): Ground Advantage, First-Class Mail, Priority Mail and Priority Mail Express Military Service.

Connect it

One URL, no token. Pick your app.

Claude.ai and Claude Desktop

Open Settings, then Connectors, then Add custom connector. Paste the URL. Leave the OAuth fields empty. Save.

https://usps-holiday-shipping-deadlines-mcp.lipmichal.workers.dev/mcp

Claude Code

Run this in your terminal. Then run claude mcp list to check it.

claude mcp add --transport http usps-holiday-shipping-deadlines https://usps-holiday-shipping-deadlines-mcp.lipmichal.workers.dev/mcp

Cursor

Merge this into ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (one project).

{
  "mcpServers": {
    "usps-holiday-shipping-deadlines": {
      "url": "https://usps-holiday-shipping-deadlines-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

VS Code

Put this in .vscode/mcp.json. The top key is servers, not mcpServers.

{
  "servers": {
    "usps-holiday-shipping-deadlines": {
      "type": "http",
      "url": "https://usps-holiday-shipping-deadlines-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Things to ask

Paste one into a new chat after you connect.

Sourcegithub.com/theluckystrike/usps-holiday-shipping-deadlines-mcp

Questions

Is the USPS holiday shipping deadlines MCP server free?
Yes. The hosted URL is free and needs no token, key or account. The source is open on GitHub.
Why not just ask the model?
A model answers from its training data. That data stops at a cutoff date, and long sums can drift. This server reads its data or rules each time you ask, so the answer is current and exact.
Where does the data come from?
USPS holiday shipping dates page (usps.com/holiday/holiday-shipping-dates.htm), read at call time, with a built-in copy of the 2026 table as the fallback.
Which apps can use it?
Any MCP client that accepts a remote server URL: Claude.ai and Claude Desktop custom connectors, Claude Code, Cursor, VS Code and others. You can also run it locally with npx.

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