# Introduction
The Address Book Service (abservice) is a SOAP (XML) Web Service.
Introduced with [MSNP8](../versions/msnp8.md).

It manages the link(s) between the E-mail Service Address Book and the Forward List (FL).

It's default HTTP URL is `http://contacts.msn.com/abservice/abservice.asmx`.
It's default HTTPS URL is `https://contacts.msn.com/abservice/abservice.asmx`.

This service requires Passport authentication.

Related: [Contact Sharing Service](sharingservice.md) (for other List's members).

# Actions
*All actions listed have the prefix of
`http://www.msn.com/webservices/AddressBook/`.*

* ABFindAll (internal name: `Contacts.Pull`)
* ABContactAdd (internal name: `Contacts.Push.Contact.Add`)
* ABContactDelete (internal name: `Contacts.Push.Contact.Delete`)
* ABContactUpdate (internal name: `Contacts.Push.Contact.Update`)
* ABGroupContactAdd (internal name: `Contacts.Push.Contact.AddToGroup`)
* ABGroupContactDelete (internal name: `Contacts.Push.Contact.DeleteFromGroup`)
* ABGroupAdd (internal name: `Contacts.Push.Group`)
* ABGroupDelete (internal name: `Contacts.Push.Group.Delete`)
* ABGroupUpdate (internal name: `Contacts.Push.Contact.Edit`)

## Actions that we don't know much about
* ABFind (internal name: `Contacts.FindId`)
* ABAdd (internal name: `Contacts.AddAb`)
* ABDelete (internal name: `Contacts.DeleteAb`)
* ABFindByContacts (internal name: `Contacts.Pull.Id`)
* UpdateDynamicItem (internal name: `Contacts.Push.DynamicItem.Edit`)