MCP SERVER · OFFICIAL PROJECT

U301 URL Shortener

Shorten up to 200 URLs in a single call through U301, on the default domain or one of your own.

by tealight-uk ↗Developer Conversions, Encoding & Test Data✓ Official

LABSCO SUMMARY

Bulk link shortening as a single step.

It does one thing, and the batch size is why it earns a slot: a whole document's worth of links can be rewritten in one call rather than one at a time.

What it is

An MCP server for the U301 short-link service. It carries one tool, which shortens URLs in bulk and accepts a slug, expiry date, password and dashboard comment for each link.

What you get

Up to 200 long URLs shortened in one call
A custom slug instead of a generated one
An expiry date after which the link stops working
A password required before the destination loads
A comment shown against the link in the U301 dashboard
Your own domain, connected through Cloudflare, instead of the default

Requirements

A U301 API key in U301_API_KEY, created in the U301 dashboard. Runs through npx as @u301/mcp; DOMAIN is optional, and so is naming a workspace — both fall back to the defaults.

Setup effort

Add the configuration to your client

See installation options

USE CASES

01

Replacing every long link in a document

Hand the whole set over at once — up to 200 URLs per call — and get the short links back together.

u301_shortening_urls_in_bulk

02

Making a link that reads well in print

Supply the slug yourself instead of accepting a generated one.

u301_shortening_urls_in_bulk

03

Sharing something that should not outlive the campaign

Set an expiry date so the link stops resolving on its own.

u301_shortening_urls_in_bulk

04

Sending a link only the recipient should open

Attach a password that has to be entered before the destination loads.

u301_shortening_urls_in_bulk

05

Keeping track of what you shortened and why

Add a comment that shows next to the link in the U301 dashboard.

u301_shortening_urls_in_bulk

1 tool

Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.

`u301_shortening_urls_in_bulk`

Use U301's short link service API to batch shorten long URLs. Custom domains are supported, with up to 200 URLs per request. You should provide as "{ urls: <URLItem>[]}" Current ShortLink domain is u301.co URLItem Supported Parameters areurl: required, the URL to be shortened slug: optional, a custom slug for the shortened URL, the final shortened URL will be https://u301.co/<slug> if you leave it empty, random slug will create expiredAt: optional, the expiration date for the shortened URL, e.g. 2023-01-01T00:00:00Z password: optional, a password for the shortened URL comment: optional, a comment, displayed on the dashboard

INSTALLATION

Connect your client

This one is configured rather than run — your client needs the configuration block, not a command.

Server setup

JSON

{
  "mcpServers": {
    "u301-url-shortener": {
      "command": "npx",
      "args": [
        "-y",
        "@u301/mcp"
      ],
      "env": {
        "U301_API_KEY": "<YOUR_U301_API_KEY>"
      }
    }
  }
}