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sumup

Plugin

SumUp payment integrations across terminal and online checkout flows. Build Android and iOS POS apps with SumUp card readers, online checkout with server SDKs and the checkout widget, and control card readers remotely via Cloud API.

4Mobile

Install

claude plugin install sumup@claude-plugins-official

What is sumup?

SumUp payment integrations across terminal and online checkout flows. Build Android and iOS POS apps with SumUp card readers, online checkout with server SDKs and the checkout widget, and control card readers remotely via Cloud API.

What's inside

6 bundled components — installing the plugin installs all of them.

Skills (6)

sumup-best-practices

Pick the right SumUp integration path and apply security best practices. Use when deciding between Hosted Checkout, Card Widget, Checkouts API, mobile SDKs, terminal SDKs, or Cloud API; choosing API key vs OAuth vs restricted keys; or reviewing SumUp integration security.

sumup-debug

Troubleshoot common SumUp integration failures. Use when SumUp HMAC signature checks fail, checkout sessions expire, scopes aren't activated, widget mount is blocked, affiliate keys don't match, or `checkout_reference` collides.

sumup-mcp

Use 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 wire mcp.sumup.com, or wants tool-based access to SumUp APIs.

sumup-testing

Set up and run SumUp sandbox tests. Use when configuring a SumUp test merchant, picking test cards, triggering deliberate failure (`amount = 11`), or building a SumUp end-to-end test harness.

sumup

Implement SumUp checkout flows end-to-end. Use when writing or reviewing SumUp Checkouts API calls, Card Widget mounts, Hosted Checkout setup, recurring tokenization, Terminal SDK / Cloud API reader checkouts, or 3DS / webhook handling.

upgrade-sumup

Guide for upgrading SumUp API versions and server/mobile SDKs (@sumup/sdk, sumup-go, sumup Python, PHP, Java, Rust, .NET, iOS Terminal, Android Reader, Swift Checkout, React Native). Use when bumping SumUp SDK versions or migrating off deprecated endpoints.

What this can do

Capabilities declared by the plugin's own components — read straight from their frontmatter, not inferred.

Inherit all session tools

6 components declare no tool restrictions

~351 tokens of context used while enabled, before you invoke anything

Trust

79/100 · Good

2 factors scored below maximum

Unscoped tools

Documentation

README · ~2 min read

A collection of Agent Skills for building SumUp payment integrations across card-present (terminal) and card-not-present (online) checkout flows.

Installing

These skills work with agents that support the Agent Skills standard, including Claude Code, Cursor, Gemini CLI, OpenCode, OpenAI Codex, and Pi.

Claude Code

Install using the plugin marketplace:

/plugin marketplace add sumup/sumup-skills

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