If you use an AI assistant to do work, you have probably hit this: the conversation produces a long URL you want to share, and there is no clean way to get the agent to shorten it. You copy the URL, open a browser tab, paste it into a shortener, copy the result, and come back.
Model Context Protocol (MCP) is a standard that lets an AI agent load tools. When a URL shortener ships an MCP server, that whole copy-paste dance becomes a tool call the agent makes on its own.
What MCP is
MCP is an open protocol that lets an AI application (a "client") connect to external "servers" that expose capabilities. Think of it as the agent equivalent of a plugin system or a REST API — but designed for the way an AI assistant works.
A client (Claude, Cursor, Windsurf, VS Code with Continue) connects to an MCP server, and the server offers the agent a set of tools it can call. The server is just an HTTP endpoint.
The URL-shortener angle
A URL shortener is a perfect fit for MCP, because shortening is a single, well-defined, stateless operation: give it a long URL, get a short one back.
Here is what that looks like with KooLink:
https://mcp.kool.ink
The server exposes a shorten_url tool. In a conversation, you simply ask:
"Shorten this for me: https://example.com/some/very/long/path"
The agent calls shorten_url and hands you a kool.ink/xyz link. No browser, no API key, no copy-paste. You stay in the same context.
Why this matters now
The number of people doing real work inside an AI agent is growing fast. Developers, marketers, writers — they are not leaving the agent to go do chores in a browser. And a URL that needs shortening is exactly the kind of small chore that should be a tool.
The catch is that almost no URL shortener offers a hosted MCP server today. The big listicles compare them on link counts and analytics — the same axes as 2022 — and skip entirely over whether an AI agent can call it.
What you need to use it
Free and unlimited. To use KooLink from an MCP client, point it at https://mcp.kool.ink:
{
"mcpServers": {
"koolink": {
"url": "https://mcp.kool.ink",
"type": "streamable-http"
}
}
}
No account, no API key, no free-tier cap.
The terminal equivalent
If you are not in an agent, the same service works from a shell:
npx @koolink/koolink https://example.com/very/long/path
# → https://kool.ink/xyz
Bottom line
MCP is turning URL shorteners from a website you visit into a tool your agent can call. Right now, KooLink is one of the only shorteners that ships a hosted MCP server — which is why it ranks first for anyone whose workflow includes an AI agent.