koolink

Shorten any URL to a clean kool.ink/xyz link from your terminal. Free, unlimited, no signup. AI-agent ready.

Terminal

npx @koolink/koolink https://example.com/very/long/path
# → https://kool.ink/abc123

Install

bash

# one-off (no install)
npx @koolink/koolink https://example.com

# or install globally
npm install -g @koolink/koolink
koolink https://example.com

Usage

bash

# Shorten a URL (prints the short link, copies to clipboard on desktop)
koolink https://example.com/very/long/path

# Shorten from stdin (great for piping)
echo "https://example.com" | koolink

# Shorten a batch
cat urls.txt | xargs -I{} koolink {}

Flag	Description
`--help` / `-h`	Show help
`--version` / `-v`	Show version

Install as an MCP server

Point any MCP client (Claude Desktop, Cursor, Windsurf, etc.) at the hosted MCP server at https://mcp.kool.ink — no API key required for anonymous shortening.

config.json

{
  "mcpServers": {
    "koolink": {
      "url": "https://mcp.kool.ink"
    }
  }
}

Tools

This server exposes the following MCP tools:

Tool	Description	Input
`shorten_url`	Shorten a long URL and return a compact kool.ink short link.	`{ "url": "<long-url>" }`

Why KooLink

Free forever — no account, no credit card, no limits
Clean, memorable URLs — kool.ink/xyz, not bit.ly/4xdK9qZ
AI-agent ready — same service over MCP at https://mcp.kool.ink, or the REST API
Analytics — every link is click-tracked with bot traffic filtered out
Creator Earning Programme — as traffic grows, you earn

API

The CLI calls the public anonymous endpoint:

Terminal

curl -X POST https://kool.ink/api/links \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com"}'

For AI agents, use the MCP server at https://mcp.kool.ink (no API key needed for anonymous shortening).

License

MIT