OCPI Testing for CPOs & eMSPs

Free OCPI testing tool supporting versions 2.1.1, 2.2, and 2.2.1 for CPOs and eMSPs. Simulate EV roaming, validate protocol compliance, and debug interoperability issues. No signup required.

This is a shareable preview of EV Roaming Tester. The full interactive simulator runs in your browser with JavaScript enabled.

Use it to validate OCPI integrations, explore message flows, and reproduce roaming issues between CPO and eMSP systems without installing anything.

Key capabilities

  • Simulate CPO and eMSP roles in one browser session
  • Validate OCPI request/response payloads and common edge cases
  • Visualize message flows and charging-session lifecycle events
  • Inspect logs to debug roaming interoperability issues
  • Share reproducible scenarios with your team

Common workflows

  • Validate OCPI endpoints by sending sample requests and inspecting responses for protocol correctness.
  • Reproduce a roaming issue by simulating a full session lifecycle and comparing message order and payloads.
  • Review message flows to align engineering and product teams on expected CPO ↔ eMSP interactions.
  • Capture logs and share a single URL to discuss a specific scenario with teammates.