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SumUp SumUp Developer

Agent Skills

Use SumUp Agent Skills in AI coding assistants when building payment integrations.

Agent Skills let AI coding assistants load focused instructions for specific tasks. We publish SumUp skills in the sumup/sumup-skills repository to help you build terminal and online payment integrations faster and with fewer mistakes.

Install from GitHub

Use the sumup/sumup-skills repository:

https://github.com/sumup/sumup-skills

Claude Code

Install with the plugin marketplace:

/plugin marketplace add sumup/sumup-skills
/plugin install sumup@sumup

Cursor

Install from the Cursor Marketplace, or add it manually in:

Settings -> Rules -> Add Rule -> Remote Rule (Github) with:

sumup/sumup-skills

Gemini CLI

Install the extension from GitHub:

gemini extensions install https://github.com/sumup/sumup-skills --ref=main

npx skills

Install with:

npx skills add https://github.com/sumup/sumup-skills

Clone / Copy

Clone the repository and copy the skill folders into your agent’s skill directory:

AgentSkill directory
Claude Code~/.claude/skills/
Cursor~/.cursor/skills/
Gemini CLI~/.gemini/extensions/
OpenCode~/.config/opencode/skills/
OpenAI Codex~/.codex/skills/
Pi~/.pi/agent/skills/

Use the SumUp skill

After installation, ask your assistant to use the sumup skill for checkout work, for example:

  • “Use $sumup to build a Cloud API payment flow for Solo.”
  • “Use $sumup to implement a Card Widget checkout with server-side checkout creation.”
  • “Use $sumup to troubleshoot 3DS and webhook handling for online payments.”

The skill routes the assistant to the relevant SumUp references for SDKs and APIs, including:

  • Terminal payments (Android/iOS SDKs, Cloud API, Payment Switch)
  • Online payments (Card Widget, Checkouts API, 3DS, webhooks)
  • Server SDKs (Node.js, Go, Python, Java, PHP, Rust, .NET)