[JMAP] I-D Action: draft-ietf-jmap-conditional-02.txt

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Internet-Draft draft-ietf-jmap-conditional-02.txt is now available. It is a
work item of the JSON Mail Access Protocol (JMAP) WG of the IETF.

   Title:   JMAP Conditional Set
   Author:  Bron Gondwana
   Name:    draft-ietf-jmap-conditional-02.txt
   Pages:   20
   Dates:   2026-10-26

Abstract:

   The JMAP base protocol ([JMAP-CORE]) provides the Foo/set method for
   creating, updating, and destroying objects.  It offers a single
   concurrency control, the "ifInState" argument, which guards an entire
   object type: if any object of that type has changed, the whole method
   is rejected.

   This extension adds a finer, per-object conditional mechanism.  A
   client may require that an individual update or destroy proceed only
   if the target object still matches a set of expected property values,
   expressed using the JMAP PatchObject already defined for updates.
   This provides optimistic concurrency control scoped to a single
   object — the equivalent of an HTTP "If-Match" precondition — for any
   JMAP data type.

   This extension also defines an optional "atomic" argument that
   applies an entire Foo/set as a single unit: either every change it
   requests takes effect, or none does.  Combined with the per-object
   precondition, this lets a client express a multi-object change that
   is safe only when applied together — such as an atomic rename that
   exchanges two names.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-jmap-conditional/

There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-jmap-conditional-02

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-jmap-conditional-02

Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts