Precisely service search tools include all services for which you are licensed, such as ValidateAddress, GetPostalCodes, and so on. You can use these services within the Data Stewardship Portal Editor to look up and validate exception data that you are attempting to correct or augment.
Note that when using this feature you will only see services if you have view permissions for Services under the Platform group for role security. Likewise, in order to run services, you will need execute permissions for Services. However, these permissions can be modified by using Secured Entity Overrides. Using a combination of top-level permissions and overrides the administrator can manage the list of services that a particular user or role has access to in the Data Stewardship Portal Service box.