# U301 — MCP server on mcp.ai
> Connect your U301 account and use 3 tools for URL shortener straight from your AI agent. Connect with your own API key. U301 provides an API to manage all U301 resources, currently under development.

By: mcp.ai · official
Page: https://mcp.ai/u301

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_u301?ms=1787293560000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/u301/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/u301/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/u301/skill.md
Postman collection (v2.1): https://mcp.ai/u301/postman.json

## Tools
- u301_delete_link(link: string) — Tool to delete a shortened link by its link identifier. Use when you need to remove a shortened link from the system.
- u301_list_shorten_domains(page?: integer, per_page?: integer, visibility?: string) — Tool to list available domains for URL shortening, including public domains and custom domains. Use when you need to see what domains are available for creating short links. Supports pagination and fi
- u301_shorten_link(url: string, slug?: string, title?: string, domain?: string) — Tool to shorten a long URL into a compact short link. Use after obtaining the long URL when you need a shareable link.

## Example prompts
- "What can I do in U301?"
- "Show me a summary of my U301 account"

## Links
Docs: https://mcp.ai/docs/mcps/u301
Website: https://mcp.ai/mcps/u301