Nuvei Nuvei Financial Operations API Settle, void, and refund operations. Documentation GitHub OpenAPI Documentation 📖 Documentation https://docs.nuvei.com/documentation/integration/server-to-server/server-to-server-introduction/ Specifications ⚙ OpenAPI https://raw.githubusercontent.com/api-evangelist/nuvei/refs/heads/main/openapi/nuvei-financial-operations-api-openapi.yml