ucp-mock

You can test a UCP vending machine checkout flow by running a local mock server that simulates the entire purchase lifecycle, including cart, checkout, order polling, and SSE dispense events. This allows integration testing safely in a local environment.

For integration testing, you can simulate normal dispensing, slow fulfillment, empty-lane rejection, and offline-device errors. These scenarios help validate retry mechanisms and fallback handling in your client during the checkout process.

Yes, the UCP mock supports OAuth 2.0 client credentials for authentication and SSE event streaming for dispense events. It provides a complete environment to validate payment handlers and order status transitions locally.

You validate UCP envelopes and payment handlers by configuring the mock server to expose predictable status transitions and continue URLs. This allows another agent to verify its client against the mock's checkout completion and order polling responses.

Yes, AI agents can test cart browsing, checkout creation, and checkout completion workflows against the local mock server. It simulates the full UCP vending purchase flow, enabling agents to safely exercise order polling and event streaming.