generated: '2026-07-11' method: derived source: openapi/whmcs-openapi.yml summary: types: - apiKey api_key_in: - query schemes: - name: ApiCredentials type: apiKey in: query parameter: identifier description: WHMCS API credentials. Provide identifier and secret parameters in the POST request body, along with the action parameter. sources: - openapi/whmcs-openapi.yml