Skip to main content

​
Overview

This guide will help you connect your AI assistant to Danube and execute your first tool. We’ll use Cursor as an example, but the same approach works for any MCP client.
The Danube MCP Server: https://danube.fastmcp.app/mcp

​
Step 1: Get Your API Key

1

Sign Up or Log In

Go to danubeai.com and create an account or sign in.
2

Navigate to API Keys

Click on API Keys.
3

Create a New Key

Click Create API Key, give it a name like “My MCP Client”, and copy the key.

​
Step 2: Choose Your MCP Client

Select your MCP client to view setup instructions:

Claude Desktop

Anthropic’s desktop app

Claude Code CLI

Terminal AI assistant

Cursor

AI-powered code editor

Windsurf

Codeium’s code editor

Other

Any MCP client

​
Step 3: Restart Your Client

After saving the configuration:
  1. Completely quit your MCP client (not just close the window)
  2. Relaunch the application

​
Step 4: Make Your First Tool Call

Open a new conversation and try one of these prompts:
Prompt: “What services are available on Danube?”This calls the list_services tool and shows you available service providers.
Prompt: “Search for tools related to news”This uses semantic search to find relevant tools across all services.
Prompt: “Get the top 5 stories from Hacker News”This executes a tool to fetch live data from Hacker News.

​
Troubleshooting

  • Make sure you completely restarted your MCP client
  • Check that your API key is correct
  • Verify the JSON syntax in your config file
  • Your API key may be invalid or expired
  • Ensure the header is named exactly danube-api-key (lowercase)
  • Generate a new API key from the dashboard
  • Check your internet connection
  • Verify the URL is https://danube.fastmcp.app/mcp
  • Try the health check endpoint above

​
Next Steps

MCP Clients

Detailed setup for Claude Desktop, Windsurf, and more