A pluggable token provider model for message level authentication across multiple web services is provided. Web service and token provider implementations within a client application are separated from an actual component that operates the business logic to formulate and understand a web request. The web service components may request web services to be executed and supply the body for the web service message while a common framework maintains the web services metadata, which includes definitions associated with respective tokens. The framework may further maintain token provider implementations that actually fetch authentication tokens and perform the web requests.