Your First Tool Call

This walkthrough uses Cursor as an example, but the experience is similar across all MCP clients.

Using a Provider Server

The simplest way to start — connect directly to one provider.

Add this to your ~/.cursor/mcp.json:


{
  "mcpServers": {
    "firecrawl": {
      "url": "https://firecrawl.mcp.xpay.sh/mcp?key=YOUR_API_KEY"
    }
  }
}

Replace YOUR_API_KEY with your actual key.

In Cursor’s chat, type:

Scrape the homepage of https://example.com and summarize it

Cursor will call the firecrawl_scrape tool, which costs about $0.01 per call.

The tool result will include a billing receipt at the end:


Cost: $0.01 | Balance: $4.99 | xpay✦

For access to all 1000+ tools through dynamic discovery:


{
  "mcpServers": {
    "xpay": {
      "url": "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
    }
  }
}

The agent will use xpay_discover to find the right tool, xpay_details to check pricing, and xpay_run to execute it — all automatically.

Find the LinkedIn profile for the CEO of Stripe

The agent discovers Hunter’s find_email tool, checks the price ($0.01), runs it, and returns the result.

Tip: Start with a provider server for a focused experience, then switch to the master server when you need broader access.