generated: '2026-07-11' method: derived source: openapi/churnkey-openapi.yml summary: types: - apiKey api_key_in: - header schemes: - name: apiKeyAuth type: apiKey in: header parameter: x-ck-api-key description: Churnkey API key. The Data API (/v1/data) uses the Data API key from Settings > Account; the event and billing-contact endpoints (/v1/api) use a Churnkey API key. sources: - openapi/churnkey-openapi.yml - name: appIdAuth type: apiKey in: header parameter: x-ck-app description: Churnkey Application ID (App ID) from Settings. sources: - openapi/churnkey-openapi.yml