Contributing

Development

Development requires Node.js 22 or later.

npm install
npm run dev

The worker is implemented with Hono and serves MCP routes through a Durable Object-backed McpAgent.

Testing

To test the server, you can use for example MCP Inspector:

npx @modelcontextprotocol/inspector

Run the local checks before opening a PR:

npm run build
npm run test
npm run lint

Local package development

When testing locally against changes in @sumup/agent-toolkit install it using npm i ../path/to/agent-toolkit.

Conventional Commits

We rely on Conventional Commits which are used to generate changelog. All PR titles must follow the conventional commits standard.