# Table of contents:

• Introduction
• Actions
  • Actions that we don't know much about

# Introduction

The Contact Sharing Service (SharingService) is a SOAP (XML) Web Service. Introduced with MSNP13.

It manages the Messenger Service's Allow List (AL), Block List (BL), Reverse List (RL), and Pending List (PL) members.

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

This service requires Passport authentication.

Related: Address Book Service (for Forward List (PL) members).

# Actions

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

• FindMembership (internal name: Sharing.Pull.Membership)
• AddMember (internal name: Sharing.Push.Member.Add)
• DeleteMember (internal name: Sharing.Push.Member.Delete)
• UpdateMember (internal name: Sharing.Push.Member.Edit)

# Actions that we don't know much about

• AddService (internal name: Sharing.Push.Service.Add)
• UpdateService (internal name: Sharing.Push.Service.Edit)
• FindInverseService (internal name: Sharing.Pull.InverseServices)
• DeleteInverseService (internal name: Sharing.Push.Document.Delete)
• AcceptInvitation (internal name: Sharing.Push.Invitation.Accept)
• DeclineInvitation (internal name: Sharing.Push.Invitation.Decline)
• AddNamespace (internal name: Sharing.Push.Namespace.Add)
• DeleteNamespace (internal name: Sharing.Push.Namespace.Delete)