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SumUp Developer

MCP Server

Connect MCP-compatible clients and assistants to SumUp APIs and tools.

MCP is an open protocol that standardizes how applications provide context to LLMs. For developers using AI-powered code editors such as Cursor or Windsurf, or general-purpose tools such as Claude Desktop, we provide the SumUp Model Context Protocol (MCP) server.

The MCP server gives AI agents tools for calling the SumUp API and searching our knowledge base (documentation, support articles, and so on).

SumUp runs a managed MCP server at https://mcp.sumup.com/mcp. This endpoint allows your MCP client to interact with SumUp APIs to manage your account, create checkouts, or process payments using Cloud API. The server supports streamable HTTP1 transport via /mcp and the SSE transport (deprecated) via /sse.

Hosted MCP (managed)

Section titled “Hosted MCP (managed)”

If your MCP client supports streamable HTTP, connect directly to the hosted server instead of running a local process. Configure your MCP client to use https://mcp.sumup.com/mcp and send your SumUp API key as a Bearer token in the Authorization header (or equivalent auth configuration in your client).

CLI

Section titled “CLI”

Run the following command to start the MCP server locally.

SUMUP_API_KEY='sup_sk_MvxmLOl0...' npx -y @sumup/mcp

The MCP server uses either the passed --api-key or the SUMUP_API_KEY environment variable.

Cursor

Section titled “Cursor(Opens in a new tab)”
  1. Go to Cursor Settings > MCP
  2. Click + Add new Global MCP Server
  3. Add the following configuration to your global .cursor/mcp.json file.

See the Cursor documentation for more details. You can also add this to your project-specific Cursor configuration (supported in Cursor 0.46+).

{
  "mcpServers": {
    "sumup": {
      "command": "npx",
      "args": ["-y", "@sumup/mcp"],
      "env": {
        "SUMUP_API_KEY": "sup_sk_..."
      }
    }
  }
}

Claude

Section titled “Claude(Opens in a new tab)”

Add the following to your claude_desktop_config.json file. See the Claude Desktop documentation for more details.

{
  "mcpServers": {
    "sumup": {
      "command": "npx",
      "args": ["-y", "@sumup/mcp"],
      "env": {
        "SUMUP_API_KEY": "sup_sk_..."
      }
    }
  }
}

The code editor agent automatically detects available tools and calls the relevant tool when you ask related questions.

Footnotes

Section titled “Footnotes”

  1. https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#streamable-http ↩︎