If you are unsure about a term used on this site, and that term is not defined below, please make a comment below and we'll add an explanation.

namespace ( server-side ): Issued with your developer keys, a namespace is the context in which you will make all API calls to the Wetpaint servers. The namespace allows us to associate users and content with your client application. Typically, a client application will have a single namespace. It is required for all api calls.

ticket: Returned by a login call, a ticket represents an active user session. We use the ticket to identify a user, to authorize her for future ajax api calls, and to determine which editing tools will be made available to the user when she visits your site. A ticket is required for all ajax api calls. If it will help, you can find an example response and the ticket xsd definition here. See here for more detailed info.