The JSON Meta Application Protocol (JMAP)
RFC 8620

Document Type RFC - Proposed Standard (July 2019; Errata)
Last updated 2019-07-24
Replaces draft-jenkins-jmap
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Bron Gondwana
Shepherd write-up Show (last changed 2018-12-02)
IESG IESG state RFC 8620 (Proposed Standard)
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Responsible AD Alexey Melnikov
Send notices to Bron Gondwana <brong@fastmailteam.com>
IANA IANA review state Version Changed - Review Needed
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Internet Engineering Task Force (IETF)                        N. Jenkins
Request for Comments: 8620                                      Fastmail
Category: Standards Track                                      C. Newman
ISSN: 2070-1721                                                   Oracle
                                                               July 2019

               The JSON Meta Application Protocol (JMAP)

Abstract

   This document specifies a protocol for clients to efficiently query,
   fetch, and modify JSON-based data objects, with support for push
   notification of changes and fast resynchronisation and for out-of-
   band binary data upload/download.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8620.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Jenkins & Newman             Standards Track                    [Page 1]
RFC 8620                          JMAP                         July 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.1.  Notational Conventions  . . . . . . . . . . . . . . . . .   4
     1.2.  The Id Data Type  . . . . . . . . . . . . . . . . . . . .   6
     1.3.  The Int and UnsignedInt Data Types  . . . . . . . . . . .   6
     1.4.  The Date and UTCDate Data Types . . . . . . . . . . . . .   7
     1.5.  JSON as the Data Encoding Format  . . . . . . . . . . . .   7
     1.6.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   7
       1.6.1.  User  . . . . . . . . . . . . . . . . . . . . . . . .   7
       1.6.2.  Accounts  . . . . . . . . . . . . . . . . . . . . . .   7
       1.6.3.  Data Types and Records  . . . . . . . . . . . . . . .   8
     1.7.  The JMAP API Model  . . . . . . . . . . . . . . . . . . .   8
     1.8.  Vendor-Specific Extensions  . . . . . . . . . . . . . . .   9
   2.  The JMAP Session Resource . . . . . . . . . . . . . . . . . .   9
     2.1.  Example . . . . . . . . . . . . . . . . . . . . . . . . .  14
     2.2.  Service Autodiscovery . . . . . . . . . . . . . . . . . .  15
   3.  Structured Data Exchange  . . . . . . . . . . . . . . . . . .  16
     3.1.  Making an API Request . . . . . . . . . . . . . . . . . .  16
     3.2.  The Invocation Data Type  . . . . . . . . . . . . . . . .  16
     3.3.  The Request Object  . . . . . . . . . . . . . . . . . . .  16
       3.3.1.  Example Request . . . . . . . . . . . . . . . . . . .  18
     3.4.  The Response Object . . . . . . . . . . . . . . . . . . .  18
       3.4.1.  Example Response  . . . . . . . . . . . . . . . . . .  19
     3.5.  Omitting Arguments  . . . . . . . . . . . . . . . . . . .  19
     3.6.  Errors  . . . . . . . . . . . . . . . . . . . . . . . . .  19
       3.6.1.  Request-Level Errors  . . . . . . . . . . . . . . . .  20
       3.6.2.  Method-Level Errors . . . . . . . . . . . . . . . . .  21
     3.7.  References to Previous Method Results . . . . . . . . . .  22
     3.8.  Localisation of User-Visible Strings  . . . . . . . . . .  27
     3.9.  Security  . . . . . . . . . . . . . . . . . . . . . . . .  28
     3.10. Concurrency . . . . . . . . . . . . . . . . . . . . . . .  28
   4.  The Core/echo Method  . . . . . . . . . . . . . . . . . . . .  28
     4.1.  Example . . . . . . . . . . . . . . . . . . . . . . . . .  28
   5.  Standard Methods and Naming Convention  . . . . . . . . . . .  29
     5.1.  /get  . . . . . . . . . . . . . . . . . . . . . . . . . .  29
     5.2.  /changes  . . . . . . . . . . . . . . . . . . . . . . . .  30
     5.3.  /set  . . . . . . . . . . . . . . . . . . . . . . . . . .  34
     5.4.  /copy . . . . . . . . . . . . . . . . . . . . . . . . . .  40
     5.5.  /query  . . . . . . . . . . . . . . . . . . . . . . . . .  42
     5.6.  /queryChanges . . . . . . . . . . . . . . . . . . . . . .  48
     5.7.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .  51
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