sumup

How to start

1. Paste the command into Claude Code and press Enter.
2. Restart Claude Code so the plugin loads.
3. Just ask Claude. Its skills step in when your request fits.

What it adds

6 skills · 1 MCP server

Skills Claude loads these when the task fits

• sumup-best-practicesPick the right SumUp integration path and apply security best practices. Use when deciding between Hosted Checkout, Card Widget, Checkouts API, mobile SDKs, te…
• sumup-debugTroubleshoot common SumUp integration failures. Use when SumUp HMAC signature checks fail, checkout sessions expire, scopes aren't activated, widget mount is b…
• sumup-mcpUse the SumUp MCP server (https://mcp.sumup.com/mcp) from Cursor, Claude Code, Codex, or any MCP-capable client. Use when the user mentions SumUp MCP, needs to…
• sumup-testingSet up and run SumUp sandbox tests. Use when configuring a SumUp test merchant, picking test cards, triggering deliberate failure (`amount = 11`), or building…
• sumupImplement SumUp checkout flows end-to-end. Use when writing or reviewing SumUp Checkouts API calls, Card Widget mounts, Hosted Checkout setup, recurring tokeni…
• upgrade-sumupGuide for upgrading SumUp API versions and server/mobile SDKs (@sumup/sdk, sumup-go, sumup Python, PHP, Java, Rust, .NET, iOS Terminal, Android Reader, Swift C…

MCP servers Connections it sets up for you

• sumupRemote server at mcp.sumup.com

Read from the plugin's own files in sumup/sumup-skills, 26 Oct 2026.

What it needs

No keys or settings: its files ask for none. A remote server may still ask you to sign in the first time.