Open Certificate of Currency API
The single documented server-side REST operation on the Open Platform. POST /v1/policy/coc retrieves a Certificate of Currency for an existing policy directly from the insurer to validate cover, returning JSON or PDF. Credentials are an api_key / api_secret pair passed in the request body, issued by Open at partner account creation. The published OpenAPI 3.0.3 definition declares the sandbox host https://api.sandbox.beopen.com; the production host https://api.beopen.com answers the same path (GET returns 405, POST only).