import type { ICredentialType, Icon, INodeProperties, ICredentialDataDecryptedObject, IHttpRequestHelper, IDataObject } from 'n8n-workflow';
export declare class UmsatzIoApi implements ICredentialType {
    name: string;
    displayName: string;
    icon: Icon;
    documentationUrl: string;
    properties: INodeProperties[];
    preAuthentication(this: IHttpRequestHelper, credentials: ICredentialDataDecryptedObject): Promise<IDataObject>;
    test: {
        request: {
            method: "POST";
            url: string;
            headers: {
                Authorization: string;
                'Content-Type': string;
                Accept: string;
            };
            body: {
                query: string;
            };
            json: boolean;
        };
    };
}