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# API changelog
This page documents changes to the Zulip Server API over time. See
also the [Zulip release lifecycle][release-lifecycle] for background
on why this API changelog is important, and the [Zulip server
changelog][server-changelog].
The API feature levels system used in this changelog is designed to
make it possible to write API clients, such as the Zulip mobile and
terminal apps, that work with a wide range of Zulip server
versions. Every change to the Zulip API is recorded briefly here and
with full details in **Changes** entries in the API documentation for
the modified endpoint(s).
When using an API endpoint whose behavior has changed, Zulip API
clients should check the `zulip_feature_level` field, present in the
[`GET /server_settings`](/api/get-server-settings) and [`POST
/register`](/api/register-queue) responses, to determine the API
format used by the Zulip server that they are interacting with.
## Changes in Zulip 8.0
**Feature level 199**
* [`POST /register`](/api/register-queue), [`GET /events`][/api/get-events],
[`GET /streams`](/api/get-streams),
[`GET /streams/{stream_id}`](/api/get-stream-by-id): Stream objects now
include a `stream_weekly_traffic` field indicating the stream's level of
traffic.
**Feature level 198**
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue),
[`GET /user_groups`](/api/get-user-groups),
[`POST /user_groups/create`](/api/create-user-group),
[`PATCH /user_groups/{user_group_id}`](/api/update-user-group):Renamed
group setting `can_mention_group_id` to `can_mention_group`.
**Feature level 197**
* [`POST /users/me/subscriptions`](/api/subscribe),
[`PATCH /streams/{stream_id}`](/api/update-stream),
[`GET users/me/subscriptions`](/api/get-subscriptions),
[`GET /streams`](/api/get-streams),
[`POST /register`](/api/register-queue),
[`GET /events`](/api/get-events): Renamed
stream setting `can_remove_subscribers_group_id`
to `can_remove_subscribers_group`.
**Feature level 196**
* [`POST /realm/playgrounds`](/api/add-code-playground): `url_prefix` is
replaced by `url_template`, which only accepts [RFC 6570][rfc6570] compliant
URL templates. The old prefix format is no longer supported.
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue):
`url_prefix` is replaced by `url_template` in `realm_playgrounds` events.
**Feature level 195**
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue):
The `default_code_block_language` realm setting is now consistently an
empty string when no default pygments language code is set. Previously,
the server had a bug that meant it might represent no default for this
realm setting as either `null` or an empty string. Clients supporting
older server versions should treat either value (`null` or `""`) as no
default being set.
**Feature level 194**
* [`GET /messages`](/api/get-messages),
[`GET /messages/matches_narrow`](/api/check-messages-match-narrow),
[`POST /message/flags/narrow`](/api/update-message-flags-for-narrow),
[`POST /register`](/api/register-queue):
For [search/narrow filters](/api/construct-narrow) with the `id`
operator, added support for encoding the message ID operand as either
a string or an integer. Previously, only string encoding was supported.
**Feature level 193**
* [`POST /messages/{message_id}/reactions`](/api/add-reaction),
[`DELETE /messages/{message_id}/reactions`](/api/remove-reaction):
Endpoints return specific error responses if an emoji reaction
already exists when adding a reaction (`"code": "REACTION_ALREADY_EXISTS"`)
or if an emoji reaction does not exist when deleting a reaction
(`"code": "REACTION_DOES_NOT_EXIST"`). Previously, these errors
returned the `"BAD_REQUEST"` code.
**Feature level 192**
* [`GET /events`](/api/get-events): Stream creation events are now
sent when guest users gain access to a public stream by being
subscribed. Guest users previously only received these events when
subscribed to private streams.
**Feature level 191**
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue),
[`GET /user_groups`](/api/get-user-groups): Add `can_mention_group_id` to
user group objects.
* [`POST /user_groups/create`](/api/create-user-group): Added `can_mention_group_id`
parameter to support setting the user group whose members can mention the new user
group.
* [`PATCH /user_groups/{user_group_id}`](/api/update-user-group): Added
`can_mention_group_id` parameter to support changing the user group whose
members can mention the specified user group.
**Feature level 190**
* [`DELETE /realm/emoji/{emoji_name}`](/api/deactivate-custom-emoji): This endpoint
now returns an HTTP status code of 404 when an emoji does not exist, instead of 400.
**Feature level 189**
* [`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults),
[`POST /register`](/api/register-queue), [`PATCH /settings`](/api/update-settings):
Added new boolean user settings `enable_followed_topic_email_notifications`,
`enable_followed_topic_push_notifications`,
`enable_followed_topic_wildcard_mentions_notify`,
`enable_followed_topic_desktop_notifications`
and `enable_followed_topic_audible_notifications` to control whether a user
receives email, push, wildcard mention, visual desktop and audible desktop
notifications, respectively, for messages sent to followed topics.
**Feature level 188**
* [`POST /users/me/muted_users/{muted_user_id}`](/api/mute-user),
[`DELETE /users/me/muted_users/{muted_user_id}`](/api/unmute-user):
Added support to mute/unmute bot users.
Feature levels 186-187 are reserved for future use in 7.x maintenance
releases.
## Changes in Zulip 7.0
**Feature level 185**
No changes; feature level used for Zulip 7.0 release.
**Feature level 184**
* [`PATCH /scheduled_messages/<int:scheduled_message_id>`](/api/update-scheduled-message):
Added new endpoint for editing an existing scheduled message.
* [`POST /scheduled_messages`](/api/create-scheduled-message):
Removed optional `scheduled_message_id` parameter, which had
been a previous way for clients to support editing an existing
scheduled message.
**Feature level 183**
* [`POST /register`](/api/register-queue): Removed the
`realm_community_topic_editing_limit_seconds` property, which was no
longer in use. The time limit for editing topics is controlled by the
realm setting `move_messages_within_stream_limit_seconds`, see feature
level 162.
* [`GET /events`](/api/get-events): Removed the `community_topic_editing_limit_seconds`
property from realm `update_dict` event documentation, because it was
never returned as a changed property in this event and was only ever
returned in the [`POST /register`](/api/register-queue) response.
**Feature level 182**
* `POST /export/realm`: This endpoint now returns the ID of the data
export object created by the request.
**Feature level 181**
* [`GET /scheduled_messages`](/api/get-scheduled-messages), [`GET
/events`](/api/get-events), [`POST /register`](/api/register-queue):
Added `failed` boolean field to scheduled message objects to
indicate if the server tried to send the scheduled message and was
unsuccessful. Clients that support unscheduling and editing
scheduled messages should use this field to indicate to the user
when a scheduled message failed to send at the appointed time.
**Feature level 180**
* `POST /invites`: Added support for invitations specifying the empty
list as the user's initial stream subscriptions. Previously, this
returned an error. This change was also backported to Zulip 6.2, and
is available at feature levels 157-158 as well.
**Feature level 179**
* [`POST /scheduled_messages`](/api/create-scheduled-message):
Added new endpoint to create and edit scheduled messages.
* [`GET /events`](/api/get-events):
Added `scheduled_messages` events sent to clients when a user creates,
edits or deletes scheduled messages.
* [`POST /register`](/api/register-queue):
Added an optional `scheduled_messages` field to that includes all
of the undelivered scheduled messages for the current user.
**Feature level 178**
* `POST users/me/presence`,
[`GET /users/<user_id_or_email>/presence`](/api/get-user-presence),
[`GET /realm/presence`](/api/get-presence),
[`POST /register`](/api/register-queue),
[`GET /events`](/api/get-events):
The server no longer stores which client submitted presence data,
and presence responses from the server will always contain the
`"aggregated"` and `"website"` keys.
**Feature level 177**
* [`GET /messages`](/api/get-messages),
[`GET /messages/matches_narrow`](/api/check-messages-match-narrow),
[`POST /message/flags/narrow`](/api/update-message-flags-for-narrow),
[`POST /register`](/api/register-queue):
Added support for three [search/narrow filters](/api/construct-narrow)
related to direct messages: `is:dm`, `dm` and `dm-including`.
The `dm` operator replaces and deprecates the `pm-with` operator.
The `is:dm` filter replaces and deprecates the `is:private` filter.
The `dm-including` operator replaces and deprecates the `group-pm-with`
operator. Because existing Zulip messages may have links with these
legacy filters, they are still supported for backwards-compatibility.
**Feature level 176**
* [`POST /realm/filters`](/api/add-linkifier),
[`PATCH realm/filters/<int:filter_id>`](/api/update-linkifier):
The `url_format_string` parameter is replaced by `url_template`.
[Linkifiers](/help/add-a-custom-linkifier) now only accept
[RFC 6570][rfc6570] compliant URL templates. The old URL format
strings are no longer supported.
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue):
The `url_format_string` key in `realm_linkifiers` objects is replaced
by `url_template`. For backwards-compatibility, clients that do not
support the `linkifier_url_template`
[client capability](/api/register-queue#parameter-client_capabilities)
will receive an empty `realm_linkifiers` array in the `/register`
response and not receive `realm_linkifiers` events. Unconditionally,
the deprecated `realm_filters` event type returns an empty array in
the `/register` response and these events are no longer sent to
clients.
**Feature level 175**
* [`POST /register`](/api/register-queue), [`PATCH /settings`](/api/update-settings),
[`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added new user setting `web_mark_read_on_scroll_policy`. Clients may use this to
determine the user's preference on whether to mark messages as read or not when
scrolling through their message feed.
**Feature level 174**:
* [`POST /typing`](/api/set-typing-status), [`POST /messages`](/api/send-message):
Added `"direct"` as the preferred way to indicate a direct message for the
`type` parameter, deprecating the original `"private"`. While `"private"`
is still supported for direct messages, clients are encouraged to use
the modern convention with servers that support it, because support for
`"private"` may eventually be removed.
**Feature level 173**:
* [`GET /scheduled_messages`](/api/get-scheduled-messages), [`DELETE
/scheduled_messages/<int:scheduled_message_id>`](/api/delete-scheduled-message):
Added new endpoints to fetch and delete scheduled messages.
**Feature level 172**
* [`PATCH /messages/{message_id}`](/api/update-message):
[Topic editing restrictions](/help/restrict-moving-messages) now apply
to stream messages without a topic.
* [`PATCH /messages/{message_id}`](/api/update-message): When users, other
than organization administrators and moderators, use
`"propagate_mode": "change_all"` to move messages that have passed the
organization's time limit for updating a message's topic and/or stream,
this endpoint now returns an error response
(`"code": "MOVE_MESSAGES_TIME_LIMIT_EXCEEDED"`).
**Feature level 171**:
* [`POST /fetch_api_key`](/api/fetch-api-key),
[`POST /dev_fetch_api_key`](/api/dev-fetch-api-key): The return values
for these endpoints now include the unique ID of the user who owns the
API key.
**Feature level 170**
* [`POST /user_topics`](/api/update-user-topic): Added a new endpoint to
update a user's personal preferences for a topic, which deprecates the
[`PATCH /users/me/subscriptions/muted_topics`](/api/mute-topic) endpoint.
The deprecated endpoint is maintained for backwards-compatibility but may be
removed in a future release.
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events):
Unmuted added as a visibility policy option to the objects sent in response
to the `user_topic` event.
**Feature level 169**
* [`PATCH /users/me/subscriptions/muted_topics`](/api/mute-topic):
Trying to mute a topic that is already muted or unmute a topic
that was not previously muted now results in a success response
rather than an error.
**Feature level 168**
* [`POST /register`](/api/register-queue), [`PATCH /settings`](/api/update-settings),
[`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Replaced the boolean user setting `realm_name_in_notifications`
with an integer `realm_name_in_email_notifications_policy`.
**Feature level 167**
* [All REST API endpoints](/api/rest-error-handling#ignored-parameters):
Implemented `ignored_parameters_unsupported` as a possible return value
in the JSON success response for all endpoints. This value is a array
of any parameters that were sent in the request by the client that are
not supported by the endpoint. Previously, unsupported parameters were
silently ignored, except in the subset of endpoints which already
supported this return value; see feature levels 111, 96 and 78.
**Feature level 166**
* [`POST /messages`](/api/send-message): Eliminated the undocumented
`realm_str` parameter. This parameter was already redundant due to
it needing to match the realm of the user making the request, otherwise
returning an authorization error. With this, the parameter is removed,
meaning that if provided in the API request, it will be ignored.
**Feature level 165**
* [`PATCH /user_groups/{user_group_id}`](/api/update-user-group): The
`name` and `description` parameters are now optional.
**Feature level 164**
* [`POST /register`](/api/register-queue): Added the
`server_presence_ping_interval_seconds` and
`server_presence_offline_threshold_seconds` fields for clients
to use when implementing the [presence](/api/get-presence) system.
**Feature level 163**
* [`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user),
[`GET /users/{email}`](/api/get-user-by-email),
[`GET /users/me`](/api/get-own-user), [`GET /events`](/api/get-events):
The `delivery_email` field is always present in user objects, including
the case when a user's `email_address_visibility` is set to everyone.
The value will be `null` if the requester does not have access to the
user's real email. For bot users, the `delivery_email` field is always
set to the bot user's real email.
* [`GET /events`](/api/get-events): Event for updating a user's
`delivery_email` is now sent to all users who have access to it, and
is also sent when a user's `email_address_visibility` setting changes.
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue)
[`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user),
[`GET /users/{email}`](/api/get-user-by-email),
[`GET /users/me`](/api/get-own-user), [`GET /messages`](/api/get-messages),
[`GET /messages/{message_id}`](/api/get-message): Whether the `avatar_url`
field in message and user objects returned by these endpoints can be `null`
now depends on if the current user has access to the other user's real
email address based on the other user's `email_address_visibility` policy.
* [`POST /register`](/api/register-queue), [`PATCH /settings`](/api/update-settings),
[`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added user setting `email_address_visibility`, to replace the
realm setting `email_address_visibility`.
* [`POST /register`](/api/register-queue), `PATCH /realm`: Removed realm
setting `email_address_visibility`.
**Feature level 162**
* `PATCH /realm`, [`POST /register`](/api/register-queue),
[`GET /events`](/api/get-events): Added two new realm settings
`move_messages_within_stream_limit_seconds` and
`move_messages_between_streams_limit_seconds` for organizations to
configure time limits for editing topics and moving messages between streams.
* [`PATCH /messages/{message_id}`](/api/update-message): For users other than
administrators and moderators, the time limit for editing topics is now
controlled via the realm setting `move_messages_within_stream_limit_seconds`
and the time limit for moving messages between streams is now controlled by
the realm setting `move_messages_between_streams_limit_seconds`.
**Feature level 161**
* [`POST /users/me/subscriptions`](/api/subscribe),
[`PATCH /streams/{stream_id}`](/api/update-stream): Added
`can_remove_subscribers_group_id` parameter to support setting and
changing the user group whose members can remove other subscribers
from the specified stream.
* [`DELETE /users/me/subscriptions`](/api/unsubscribe): Expanded the
situations where users can use this endpoint to unsubscribe other
users from a stream to include the case where the current user has
access to the stream and is a member of the user group specified by
the `can_remove_subscribers_group_id` for the stream.
**Feature level 160**
* `POST /api/v1/jwt/fetch_api_key`: Added new endpoint to fetch API
keys using JSON Web Token (JWT) authentication.
* `accounts/login/jwt/`: Adjusted format of requests to undocumented,
optional endpoint for JWT authentication log in support.
**Feature level 159**
* `PATCH /realm`, [`POST /register`](/api/register-queue),
[`GET /events`](/api/get-events):
Nobody added as an option for the realm settings `edit_topic_policy`
and `move_messages_between_streams_policy`.
* [`PATCH /messages/{message_id}`](/api/update-message): Permission
to edit the stream and/or topic of messages no longer depends on the
realm setting `allow_message_editing`.
* [`PATCH /messages/{message_id}`](/api/update-message): The user who
sent the message can no longer edit the message's topic indefinitely.
Feature level 158 is reserved for future use in 6.x maintenance
releases.
## Changes in Zulip 6.2
**Feature level 157**
* `POST /invites`: Added support for invitations specifying the empty
list as the user's initial stream subscriptions. Previously, this
returned an error. This change was backported from the Zulip 7.0
branch, and thus is available at feature levels 157-158 and 180+.
## Changes in Zulip 6.0
**Feature level 156**
No changes; feature level used for Zulip 6.0 release.
**Feature level 155**
* [`GET /messages`](/api/get-messages): The new `include_anchor`
parameter controls whether a message with ID matching the specified
`anchor` should be included.
* The `update_message_flags` event sent by [`POST
/messages/flags`](/api/update-message-flags) no longer redundantly
lists messages where the flag was set to the same state it was
already in.
* [`POST /messages/flags/narrow`](/api/update-message-flags-for-narrow):
This new endpoint allows updating message flags on a range of
messages within a narrow.
**Feature level 154**
* [`POST /streams/{stream_id}/delete_topic`](/api/delete-topic):
When the process of deleting messages times out, a success response
with "partially_completed" result will now be returned by the server,
analogically to the `/mark_all_as_read` endpoint.
**Feature level 153**
* [`POST /mark_all_as_read`](/api/mark-all-as-read): Messages are now
marked as read in batches, so that progress will be made even if the
request times out because of an extremely large number of unread
messages to process. Upon timeout, a success response with a
"partially_completed" result will be returned by the server.
**Feature level 152**
* [`PATCH /messages/{message_id}`](/api/update-message): The
`send_notification_to_old_thread` and
`send_notification_to_new_thread` parameters are now respected when
moving a topic within a stream. The default value for
`send_notification_to_old_thread` was changed from `true` to
`false`.
**Feature level 151**
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events),
[`POST /realm/profile_fields`](/api/create-custom-profile-field),
[`GET /realm/profile_fields`](/api/get-custom-profile-fields): Added
pronouns custom profile field type.
**Feature level 150**
* [`GET /events`](/api/get-events): Separate events are now sent on changing
`allow_message_editing`, `message_content_edit_limit_seconds` and
`edit_topic_policy` settings, whereas previously one event was sent including
all of these setting values irrespective of which of them were actually changed.
* `PATCH /realm`: Only changed settings are included in the response data now
when changing `allow_message_editing`, `edit_topic_policy` and
`message_content_edit_limit_seconds` settings, instead of including all the
fields even if one of these settings was changed.
**Feature level 149**
* [`POST /register`](/api/register-queue): The `client_gravatar` and
`include_subscribers` parameters now return an error for
[unauthenticated requests](/help/public-access-option) if an
unsupported value is requested by the client.
**Feature level 148**
* [`POST /users/me/status`](/api/update-status),
[`POST /register`](/api/register-queue), [`GET /events`](/api/get-events):
The user status `away` field/parameter is deprecated, and as of this
feature level are a legacy way to access the user's `presence_enabled`
setting, with `away = !presence_enabled`. To be removed in a future
release.
**Feature level 147**
* [`POST /streams/{stream_id}/delete_topic`](/api/delete-topic):
Messages now are deleted in batches, starting from the newest, so
that progress will be made even if the request times out because of
an extremely large topic.
**Feature level 146**
* [`POST /realm/profile_fields`](/api/create-custom-profile-field),
[`GET /realm/profile_fields`](/api/get-custom-profile-fields): Added a
new parameter `display_in_profile_summary`, which clients use to
decide whether to display the field in a small/summary section of the
user's profile.
**Feature level 145**
* [`DELETE users/me/subscriptions`](/api/unsubscribe): Normal users can
now remove bots that they own from streams.
**Feature level 144**
* [`GET /messages/{message_id}/read_receipts`](/api/get-read-receipts):
The `user_ids` array returned by the server no longer includes IDs
of users who have been muted by or have muted the current user.
**Feature level 143**
* `PATCH /realm`: The `disallow_disposable_email_addresses`,
`emails_restricted_to_domains`, `invite_required`, and
`waiting_period_threshold` settings can no longer be changed by
organization administrators who are not owners.
* `PATCH /realm/domains`, `POST /realm/domains`, `DELETE
/realm/domains`: Organization administrators who are not owners can
no longer access these endpoints.
**Feature level 142**
* [`GET users/me/subscriptions`](/api/get-subscriptions), [`GET
/streams`](/api/get-streams), [`POST /register`](/api/register-queue),
[`GET /events`](/api/get-events): Added `can_remove_subscribers_group_id`
field to Stream and Subscription objects.
**Feature level 141**
* [`POST /register`](/api/register-queue), [`PATCH
/settings`](/api/update-settings), [`PATCH
/realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added new `user_list_style` display setting, which controls the
layout of the right sidebar.
**Feature level 140**
* [`POST /register`](/api/register-queue): Added string field `server_emoji_data_url`
to the response.
**Feature level 139**
* [`GET /get-events`](/api/get-events): When a user mutes or unmutes
their subscription to a stream, a `subscription` update event
is now sent for the `is_muted` property and for the deprecated
`in_home_view` property to support clients fully migrating to use the
`is_muted` property. Prior to this feature level, only one event was
sent to clients with the deprecated `in_home_view` property.
**Feature level 138**
* [`POST /register`](/api/register-queue), [`GET
/events`](/api/get-events): `message_content_edit_limit_seconds`
now represents no limit using `null`, instead of the integer 0.
* `PATCH /realm`: One now sets `message_content_edit_limit_seconds`
to no limit by passing the string `unlimited`, rather than the
integer 0.
**Feature level 137**
* [`GET /messages/{message_id}/read_receipts`](/api/get-read-receipts):
Added new endpoint to fetch read receipts for a message.
* [`POST /register`](/api/register-queue), [`GET
/events`](/api/get-events), `PATCH /realm`: Added new
`enable_read_receipts` realm setting.
**Feature level 136**
* [`PATCH /streams/{stream_id}`](/api/update-stream): The endpoint
now returns an error for a request to make a public stream with
protected history which was previously ignored silently.
* [`PATCH /streams/{stream_id}`](/api/update-stream): Added support
to change access to history of the stream by only passing
`history_public_to_subscribers` parameter without `is_private`
and `is_web_public` parameters.
**Feature level 135**
* [`DELETE /user/{user_id}`](/api/deactivate-user): Added
`deactivation_notification_comment` field controlling whether the
user receives a notification email about their deactivation.
**Feature level 134**
* [`GET /events`](/api/get-events): Added `user_topic` event type
which is sent when a topic is muted or unmuted. This generalizes and
replaces the previous `muted_topics` array, which will no longer be
sent if `user_topic` was included in `event_types` when registering
the queue.
* [`POST /register`](/api/register-queue): Added `user_topics` array
to the response. This generalizes and replaces the previous
`muted_topics` array, which will no longer be sent if `user_topic`
is included in `fetch_event_types`.
**Feature level 133**
* [`POST /register`](/api/register-queue), `PATCH /realm`: Removed
stream administrators option from `wildcard_mention_policy` setting.
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events),
[`GET /users/me/subscriptions`](/api/get-subscriptions): Removed
`role` field from subscription objects.
**Feature level 132**
* [`GET /streams/{stream_id}`](/api/get-stream-by-id):
Added new endpoint to get a stream by ID.
**Feature level 131**
* [`GET /user_groups`](/api/get-user-groups),[`POST
/register`](/api/register-queue): Renamed `subgroups` field in
the user group objects to `direct_subgroup_ids`.
* [`GET /events`](/api/get-events): Renamed `subgroup_ids` field
in the group object to `direct_subgroup_ids`.
**Feature level 130**
* `PATCH /bots/{bot_user_id}`: Added support for changing a bot's role
via this endpoint. Previously, this could only be done via [`PATCH
/users/{user_id}`](/api/update-user).
**Feature level 129**
* [`POST /register`](/api/register-queue),
[`GET /events`](/api/get-events), `PATCH /realm`: Added realm setting
`want_advertise_in_communities_directory` for organizations to give
permission to be advertised in the Zulip communities directory.
**Feature level 128**
* [`POST /register`](/api/register-queue), [`GET
/events`](/api/get-events), `PATCH /realm`: Added
`org_type` realm setting.
**Feature level 127**
* [`GET /user_groups`](/api/get-user-groups),[`POST
/register`](/api/register-queue): Added `subgroups` field,
which is a list of IDs of all the subgroups of the user group, to
user group objects.
* [`GET /events`](/api/get-events): Added new `user_group` events
operations for live updates to subgroups (`add_subgroups` and
`remove_subgroups`).
* [`PATCH /user_groups/{user_group_id}/subgroups`](/api/update-user-group-subgroups):
Added new endpoint for updating subgroups of a user group.
* [`GET /user_groups/{user_group_id}/members/{user_id}`](/api/get-is-user-group-member):
Added new endpoint for checking whether a given user is member of a
given user group.
* [`GET /user_groups/{user_group_id}/members`](/api/get-user-group-members):
Added new endpoint to get members of a user group.
* [`GET /user_groups/{user_group_id}/members`](/api/get-user-group-subgroups):
Added new endpoint to get subgroups of a user group.
**Feature level 126**
* `POST /invites`, `POST /invites/multiuse`: Replaced `invite_expires_in_days`
parameter with `invite_expires_in_minutes`.
**Feature level 125**
* [`POST /register`](/api/register-queue), [`PATCH
/settings`](/api/update-settings), [`PATCH
/realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added new `display_emoji_reaction_users` display setting,
controlling whether to display the names of users with emoji reactions.
Feature levels 123-124 are reserved for future use in 5.x maintenance
releases.
## Changes in Zulip 5.0
**Feature level 122**
No changes; feature level used for Zulip 5.0 release.
**Feature level 121**
* [`GET /events`](/api/get-events): Added `message_details` field
appearing in message flag update events when marking previously read
messages as unread.
**Feature level 120**
* [`GET /messages/{message_id}`](/api/get-message): This endpoint
now sends the full message details. Previously, it only returned
the message's raw Markdown content.
**Feature level 119**
* [`POST /register`](/api/register-queue): The `unread_msgs` section
of the response now prefers `other_user_id` over the poorly named
`sender_id` field in the `pms` dictionaries. This change is
motivated by the possibility that a message you yourself sent to
another user could be marked as unread.
**Feature level 118**
* [`GET /messages`](/api/get-messages), [`GET
/events`](/api/get-events): Improved the format of the
`edit_history` object within message objects. Entries for stream
edits now include a both a `prev_stream` and `stream` field to
indicate the previous and current stream IDs. Prior to this feature
level, only the `prev_stream` field was present. Entries for topic
edits now include both a `prev_topic` and `topic` field to indicate
the previous and current topic, replacing the `prev_subject`
field. These changes substantially simplify client complexity for
processing historical message edits.
* [`GET messages/{message_id}/history`](/api/get-message-history):
Added `stream` field to message history `snapshot` indicating
the updated stream ID of messages moved to a new stream.
**Feature level 117**
* `POST /invites`, `POST /invites/multiuse`: Added support for passing
`null` as the `invite_expires_in_days` parameter to request an
invitation that never expires.
**Feature level 116**
* [`GET /server_settings`](/api/get-server-settings): Added
`realm_web_public_access_enabled` as a realm-specific server setting,
which can be used by clients to detect whether the realm allows and
has at least one [web-public stream](/help/public-access-option).
**Feature level 115**
* Mobile push notifications about stream messages now include the
`stream_id` field.
**Feature level 114**
* [`GET /events`](/api/get-events): Added `rendering_only` field to
`update_message` event type to indicate if the message change only
updated the rendering of the message or if it was the result of a
user interaction.
* [`GET /events`](/api/get-events): Updated `update_message` event type
to always include `edit_timestamp` and `user_id` fields. If the event
only updates the rendering of the message, then the `user_id` field
will be present, but with a value of null as the update was not the
result of a user interaction.
**Feature level 113**
* `GET /realm/emoji`, `POST /realm/emoji/{emoji_name}`, [`GET
/events`](/api/get-events), [`POST /register`](/api/register-queue):
The `still_url` field for custom emoji objects is now always
present, with a value of null for non-animated emoji. Previously, it
only was present for animated emoji.
**Feature level 112**
* [`GET /events`](/api/get-events): Updated `update_message` event type
to include `stream_id` field for all edits to stream messages.
**Feature level 111**
* [`POST /users/me/subscriptions/properties`](/api/update-subscription-settings):
Removed `subscription_data` from response object, replacing it with
`ignored_parameters_unsupported`.
**Feature level 110**
* [`POST /register`](/api/register-queue): Added
`server_web_public_streams_enabled` to the response.
**Feature level 109**
* [`POST /register`](/api/register-queue), [`GET
/events`](/api/get-events), `PATCH /realm`: Added new
`enable_spectator_access` realm setting.
**Feature level 108**
* In the mobile application authentication flow, the authenticated
user's `user_id` is now included in the parameters encoded in the
final `zulip://` redirect URL.
**Feature level 107**
* [`POST /register`](/api/register-queue), [`PATCH /settings`](/api/update-settings),
[`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added user setting `escape_navigates_to_default_view` to allow users to
[disable the keyboard shortcut](/help/configure-default-view) for the `Esc` key that
navigates the app to the default view.
**Feature level 106**
* [`PATCH /user/{user_id}`](/api/update-user): Removed unnecessary JSON-encoding of string
parameter `full_name`.
**Feature level 105**
* [`POST /register`](/api/register-queue), [`PATCH
/settings`](/api/update-settings), [`PATCH
/realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added three new privacy settings: `send_private_typing_notifications`,
`send_stream_typing_notifications`, and `send_read_receipts`.
**Feature level 104**
* `PATCH /realm`: Added `string_id` parameter for changing an
organization's subdomain. Currently, this is only allowed for
changing a demo organization to a normal one.
**Feature level 103**
* [`POST /register`](/api/register-queue): Added `create_web_public_stream_policy`
policy for which users can create web-public streams.
* [`GET /events`](/api/get-events), `PATCH /realm`: Added support for updating
`create_web_public_stream_policy`.
* [`POST /register`](/api/register-queue): Added `can_create_web_public_streams` boolean
field to the response.
**Feature level 102**
* [`POST /register`](/api/register-queue), `PATCH /realm`: The
`create_stream_policy` setting was split into two settings for
different types of streams: `create_private_stream_policy` and
`create_public_stream_policy`.
* [`POST /register`](/api/register-queue): The `create_stream_policy`
property was deprecated in favor of the
`create_private_stream_policy` and `create_public_stream_policy`
properties, but it still available for backwards-compatibility.
**Feature level 101**
* [`POST /register`](/api/register-queue), `PATCH /realm`: Replaced
the `allow_message_deleting` boolean field with an integer field
`delete_own_message_policy` defining which roles can delete messages
they had sent.
**Feature level 100**
* [`POST /register`](/api/register-queue), [`GET
/events`](/api/get-events): `message_content_delete_limit_seconds`
now represents no limit using `null`, instead of the integer 0, and 0 is
no longer a possible value with any meaning.
* `PATCH /realm`: One now sets `message_content_delete_limit_seconds`
to no limit by passing the string `unlimited`, rather than the
integer 0.
**Feature level 99**
* [`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults),
`PATCH /realm`: The `default_twenty_four_hour_time` parameter to
`PATCH /realm` has been replaced by the `twenty_four_hour_time` parameter
to `PATCH /realm/user_settings_defaults`, to match the new model for
user preference defaults settings.
* [`POST /register`](/api/register-queue): Removed `realm_default_twenty_four_hour_time`
from the response object. This value is now available in the
`twenty_four_hour_time` field of the `realm_user_settings_default` object.
**Feature level 98**
* [`POST /subscribe`](/api/subscribe): Added `is_web_public` parameter
for requesting the creation of a web-public stream.
* [`PATCH /streams/{stream_id}`](/api/update-stream): Added
`is_web_public` parameter for converting a stream into a web-public stream.
**Feature level 97**
* `GET /realm/emoji`, `POST /realm/emoji/{emoji_name}`, [`GET
/events`](/api/get-events), [`POST /register`](/api/register-queue):
Custom emoji objects may now contain a `still_url` field, with the
URL of a PNG still image version of the emoji. This field will only be
present for animated emoji.
**Feature level 96**
* [`PATCH /realm/user_settings_defaults`](/api/update-realm-user-settings-defaults):
Added new endpoint to update default values of user settings in a realm.
* `POST /invites`, `POST /invites/multiuse`: Added
`invite_expires_in_days` parameter encoding the number days before
the invitation should expire.
**Feature level 95**
* [`POST /register`](/api/register-queue): Added
`realm_user_settings_defaults` object, containing default values of
personal user settings for new users in the realm.
* [`GET /events`](/api/get-events): Added
`realm_user_settings_defaults` event type, which is sent when the
organization's configured default settings for new users change.
**Feature level 94**
* [`POST /register`](/api/register-queue): Added
`demo_organization_scheduled_deletion_date` field to realm data.
**Feature level 93**
* [`POST /register`](/api/register-queue), [`GET /user_groups`](/api/get-user-groups),
[`GET /events`](/api/get-events): Added `is_system_group` field to user group
objects.
**Feature level 92**
* [`GET /messages`](/api/get-messages), [`POST
/register`](/api/register-queue), [`GET /users`](/api/get-users),
[`GET /users/{user_id}`](/api/get-user), [`GET
/users/{email}`](/api/get-user-by-email): The `client_gravatar`
parameter now defaults to `true`.
**Feature level 91**
* `PATCH /realm`, [`PATCH /streams/{stream_id}`](/api/update-stream):
These endpoints now accept `"unlimited"` for `message_retention_days`,
replacing `"forever"` as the way to encode a retention policy where
messages are not automatically deleted.
**Feature level 90**
* [`POST /register`](/api/register-queue): The `unread_msgs` section
of the response no longer includes `sender_ids` in the `streams`
dictionaries. These were removed because no clients were interested
in using the data, which required substantial complexity to
construct correctly.
**Feature level 89**
* [`GET /events`](/api/get-events): Introduced the `user_settings`
event type, unifying and replacing the previous
`update_display_settings` and `update_global_notifications` event
types. The legacy event types are still supported for backwards
compatibility, but will be removed in a future release.
* [`POST /register`](/api/register-queue): Added `user_settings` field
in the response, which is a dictionary containing all the user's
personal settings. For backwards-compatibility, individual settings
will still appear in the top-level response for clients don't
support the `user_settings_object` client capability.
* [`POST /register`](/api/register-queue): Added the
`user_settings_object` property to supported `client_capabilities`.
When enabled, the server will not include a duplicate copy of
personal settings in the top-level response.
* [`GET /events`](/api/get-events): `update_display_settings` and
`update_global_notifications` events now only sent to clients that
did not include `user_settings_object` in their
`client_capabilities` when the event queue was created.
**Feature level 88**
* [`POST /register`](/api/register-queue): Added `zulip_merge_base`
field to the response.
* [`GET /events`](/api/get-events): Added new `zulip_merge_base`
field to the `restart` event.
* [`GET /server_settings`](/api/get-server-settings): Added
`zulip_merge_base` to the responses which can be used to
make "About Zulip" widgets in clients.
**Feature level 87**
* [`PATCH /settings`](/api/update-settings): Added a new
`enable_drafts_synchronization` setting, which controls whether the
syncing drafts between different clients is enabled.
* [`GET /events`](/api/get-events), [`POST /register`](/api/register-queue):
Added new `enable_drafts_synchronization` setting under
`update_display_settings`.
* [`GET /drafts`](/api/get-drafts): Added new endpoint to fetch user's
synced drafts from the server.
* [`POST /drafts`](/api/create-drafts): Added new endpoint to create
drafts when syncing has been enabled.
* [`PATCH /drafts/{draft_id}`](/api/edit-draft): Added new endpoint
to edit a draft already owned by the user.
* [`DELETE /drafts/{draft_id}`](/api/delete-draft): Added new endpoint
to delete a draft already owned by the user.
**Feature level 86**
* [`GET /events`](/api/get-events): Added `emoji_name`,
`emoji_code`, and `reaction_type` fields to `user_status` objects.
* [`POST /register`](/api/register-queue): Added `emoji_name`,
`emoji_code`, and `reaction_type` fields to `user_status` objects.
* [`POST /users/me/status`](/api/update-status): Added support for new
`emoji_name`, `emoji_code`, and `reaction_type` parameters.
**Feature level 85**
* [`POST /register`](/api/register-queue), `PATCH /realm`: Replaced `add_emoji_by_admins_only`
field with an integer field `add_custom_emoji_policy`.
**Feature level 84**
* [`POST /register`](/api/register-queue): The `enter_sends` setting
is now sent when `update_display_setting` is present in
`fetch_event_types` instead of `realm_user`.
**Feature level 83**
* * [`POST /register`](/api/register-queue): The `cross_realm_bots`
section of the response now uses the `is_system_bot` flag to
indicate whether the bot is a system bot.
**Feature level 82**
* [`PATCH /settings`](/api/update-settings) now accepts a new
`email_notifications_batching_period_seconds` field for setting the
time duration for which the server will collect email notifications
before sending them.
**Feature level 81**
* `POST /users/me/enter-sends` has been removed. The `enter_sends`
setting is now edited using the normal [`PATCH
/settings`](/api/update-settings) endpoint.
**Feature level 80**
* [`PATCH /settings`](/api/update-settings): The
`/settings/notifications` and `/settings/display` endpoints were
merged into the main `/settings` endpoint; now all personal settings
should be edited using that single endpoint. The old URLs are
preserved as deprecated aliases for backwards compatibility.
**Feature level 79**
* [`GET /users/me/subscriptions`](/api/get-subscriptions): The
`subscribers` field now returns user IDs if `include_subscribers` is
passed. Previously, this endpoint returned user display email
addresses in this field.
* `GET /streams/{stream_id}/members`: This endpoint now returns user
IDs. Previously, it returned display email addresses.
**Feature level 78**
* [`PATCH /settings`](/api/update-settings): Added
`ignored_parameters_unsupported` field, which is a list of
parameters that were ignored by the endpoint, to the response
object.
* [`PATCH /settings`](/api/update-settings): Removed `full_name` and
`account_email` fields from the response object.
**Feature level 77**
* [`GET /events`](/api/get-events): Removed `recipient_id` and
`sender_id` field in responses of `delete_message` event when
`message_type` is `private`.
**Feature level 76**
* [`POST /fetch_api_key`](/api/fetch-api-key), [`POST
/dev_fetch_api_key`](/api/dev-fetch-api-key): The HTTP status for
authentication errors is now 401. This was previously 403.
* All API endpoints now use the HTTP 401 error status for API requests
involving a deactivated user or realm. This was previously 403.
* Mobile push notifications now include the `mentioned_user_group_id`
and `mentioned_user_group_name` fields when a user group containing
the user is mentioned. Previously, these were indistinguishable
from personal mentions (as both types have `trigger="mention"`).
**Feature level 75**
* [`POST /register`](/api/register-queue), `PATCH /realm`: Replaced `allow_community_topic_editing`
field with an integer field `edit_topic_policy`.
**Feature level 74**
* [`POST /register`](/api/register-queue): Added `server_needs_upgrade`
and `event_queue_longpoll_timeout_seconds` field when fetching
realm data.
**Feature level 73**
* [`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user),
[`GET /users/{email}`](/api/get-user-by-email) and
[`GET /users/me`](/api/get-own-user): Added is `user_billing_admin` field to
returned user objects.
* [`GET /events`](/api/get-events): Added `is_billing_admin` field to
user objects sent in `realm_user` events.
* [`POST /register`](/api/register-queue): Added `is_billing_admin` field
in the user objects returned in the `realm_users` field.
**Feature level 72**
* [`POST /register`](/api/register-queue): Renamed `max_icon_file_size` to
`max_icon_file_size_mib`, `realm_upload_quota` to `realm_upload_quota_mib`
and `max_logo_file_size` to `max_logo_file_size_mib`.
**Feature level 71**
* [`GET /events`](/api/get-events): Added `is_web_public` field to
`stream` events changing `invite_only`.
**Feature level 70**
* [`POST /register`](/api/register-queue): Added new top-level
`server_timestamp` field when fetching presence data, to match the
existing presence API.
Feature levels 66-69 are reserved for future use in 4.x maintenance
releases.
## Changes in Zulip 4.0
**Feature level 65**
No changes; feature level used for Zulip 4.0 release.
**Feature level 64**
* `PATCH /streams/{stream_id}`: Removed unnecessary JSON-encoding of string
parameters `new_name` and `description`.
* `PATCH /settings/display`: Removed unnecessary JSON-encoding of string
parameters `default_view`, `emojiset` and `timezone`.
**Feature level 63**
* `PATCH /settings/notifications`: Removed unnecessary JSON-encoding of string
parameter `notification_sound`.
* `PATCH /settings/display`: Removed unnecessary JSON-encoding of string
parameter `default_language`.
* `POST /users/me/tutorial_status`: Removed unnecessary JSON-encoding of string
parameter `status`.
* `POST /realm/domains`: Removed unnecessary JSON-encoding of string
parameter `domain`.
* `PATCH /default_stream_groups/{user_id}`: Removed unnecessary JSON-encoding of string
parameters `new_group_name` and `new_description`.
* `POST /users/me/hotspots`: Removed unnecessary JSON-encoding of string
parameter `hotspot`.
**Feature level 62**
* Added `moderators only` option for `wildcard_mention_policy`.
**Feature level 61**
* `POST /invites`, `POST /invites/multiuse`: Added support for
inviting users as moderators.
**Feature level 60**
* [`POST /register`](/api/register-queue): Added a new boolean field
`is_moderator`, similar to the existing `is_admin`, `is_owner` and
`is_guest` fields, to the response.
* [`PATCH /users/{user_id}`](/api/update-user): Added support for
changing a user's organization-level role to moderator.
* API endpoints that return `role` values can now return `300`, the
encoding of the moderator role.
**Feature level 59**
* [`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user),
[`GET /users/{email}`](/api/get-user-by-email) and
[`GET /users/me`](/api/get-own-user): Added `role` field to returned
user objects.
* [`GET /events`](/api/get-events): Added `role` field to
user objects sent in `realm_user` events.
* [`POST /register`](/api/register-queue): Added `role` field
in the user objects returned in the `realm_users` field.
* [`GET /events`](/api/get-events): Added new `zulip_version` and
`zulip_feature_level` fields to the `restart` event.
**Feature level 58**
* [`POST /register`](/api/register-queue): Added the new
`stream_typing_notifications` property to supported
`client_capabilities`.
* [`GET /events`](/api/get-events): Extended format for `typing`
events to support typing notifications in stream messages. These new
events are only sent to clients with `client_capabilities`
showing support for `stream_typing_notifications`.
* [`POST /set-typing-status`](/api/set-typing-status): Added support
for sending typing notifications for stream messages.
**Feature level 57**
* [`PATCH /realm/filters/{filter_id}`](/api/update-linkifier): New
endpoint added to update a realm linkifier.
**Feature level 56**
* [`POST /register`](/api/register-queue): Added a new setting
`move_messages_between_streams_policy` for controlling who can
move messages between streams.
**Feature level 55**
* [`POST /register`](/api/register-queue): Added `realm_giphy_rating`
and `giphy_rating_options` fields.
* `PATCH /realm`: Added `giphy_rating` parameter.
**Feature level 54**
* `GET /realm/filters` has been removed and replace with [`GET
/realm/linkifiers`](/api/get-linkifiers) which returns the data in a
cleaner dictionary format.
* [`GET /events`](/api/get-events): Introduced new event type
`realm_linkifiers`. The previous `realm_filters` event type is
still supported for backwards compatibility, but will be removed in
a future release.
* [`POST /register`](/api/register-queue): The response now supports a
`realm_linkifiers` event type, containing the same data as the
legacy `realm_filters` key, with a more extensible object
format. The previous `realm_filters` event type is still supported
for backwards compatibility, but will be removed in a future
release. The legacy `realm_filters` key is deprecated but remains
available for backwards compatibility.
**Feature level 53**
* [`POST /register`](/api/register-queue): Added `max_topic_length`
and `max_message_length`, and renamed `max_stream_name_length` and
`max_stream_description_length` to allow clients to transparently
support these values changing in a future server version.
**Feature level 52**
* `PATCH /realm`: Removed unnecessary JSON-encoding of string
parameters `name`, `description`, `default_language`, and
`default_code_block_language`.
**Feature level 51**
* [`POST /register`](/api/register-queue): Added a new boolean field
`can_invite_others_to_realm`.
**Feature level 50**
* [`POST /register`](/api/register-queue): Replaced `invite_by_admins_only`
field with an integer field `invite_to_realm_policy`.
**Feature level 49**
* Added new [`POST /realm/playground`](/api/add-code-playground) and
[`DELETE /realm/playground/{playground_id}`](/api/remove-code-playground)
endpoints for code playgrounds.
* [`GET /events`](/api/get-events): A new `realm_playgrounds` events
is sent when changes are made to a set of configured code playgrounds for
an organization.
* [`POST /register`](/api/register-queue): Added a new `realm_playgrounds`
field, which is required to fetch the set of configured code playgrounds for
an organization.
**Feature level 48**
* [`POST /users/me/muted_users/{muted_user_id}`](/api/mute-user),
[`DELETE /users/me/muted_users/{muted_user_id}`](/api/unmute-user):
New endpoints added to mute/unmute users.
* [`GET /events`](/api/get-events): Added new event type `muted_users`
which will be sent to a user when the set of users muted by them has
changed.
**Feature level 47**
* [`POST /register`](/api/register-queue): Added a new `giphy_api_key`
field, which is required to fetch GIFs using the GIPHY API.
**Feature level 46**
* [`GET /messages`](/api/get-messages) and [`GET
/events`](/api/get-events): The `topic_links` field now contains a
list of dictionaries, rather than a list of strings.
**Feature level 45**
* [`GET /events`](/api/get-events): Removed useless `op` field from
`custom_profile_fields` events. These events contain the full set
of configured `custom_profile_fields` for the organization
regardless of what triggered the change.
**Feature level 44**
* [`POST /register`](/api/register-queue): extended the `unread_msgs`
object to include `old_unreads_missing`, which indicates whether the
server truncated the `unread_msgs` due to excessive total unread
messages.
**Feature level 43**
* [`GET /users/{user_id_or_email}/presence`](/api/get-user-presence):
Added support for passing the `user_id` to identify the target user.
**Feature level 42**
* `PATCH /settings/display`: Added a new `default_view` setting allowing
the user to [set the default view](/help/configure-default-view).
**Feature level 41**
* [`GET /events`](/api/get-events): Removed `name` field from update
subscription events.
**Feature level 40**
* [`GET /events`](/api/get-events): Removed `email` field from update
subscription events.
**Feature level 39**
* Added new [`GET /users/{email}`](/api/get-user-by-email) endpoint.
**Feature level 38**
* [`POST /register`](/api/register-queue): Increased
`realm_community_topic_editing_limit_seconds` time limit value
to 259200s (3 days).
**Feature level 37**
* Consistently provide `subscribers` in stream data when
clients register for subscriptions with `include_subscribers`,
even if the user can't access subscribers.
**Feature level 36**
* [`POST /users`](/api/create-user): Restricted access to organization
administrators with the `can_create_users` permission.
* [Error handling](/api/rest-error-handling): The `code` property will
now be present in errors due to rate limits.
**Feature level 35**
* [`GET /events`](/api/get-events): The `subscription` events for
`peer_add` and `peer_remove` now include `user_ids` and `stream_ids`
arrays. Previously, these events included singular `user_id` and
`stream_id` integers.
**Feature level 34**
* [`POST /register`](/api/register-queue): Added a new `wildcard_mention_policy`
setting for controlling who can use wildcard mentions in large streams.
**Feature level 33**
* Markdown code blocks now have a `data-code-language` attribute
attached to the outer `div` element, recording the programming
language that was selecting for syntax highlighting. This field
supports the upcoming "view in playground" feature for code blocks.
**Feature level 32**
* [`GET /events`](/api/get-events): Added `op` field to
`update_message_flags` events, deprecating the `operation` field
(which has the same value). This removes an unintentional anomaly
in the format of this event type.
**Feature level 31**
* [`GET users/me/subscriptions`](/api/get-subscriptions): Added a
`role` field to Subscription objects representing whether the user
is a stream administrator.
* [`GET /events`](/api/get-events): Added `role` field to
Subscription objects sent in `subscriptions` events.
Note that as of this feature level, stream administrators are a
partially completed feature. In particular, it is impossible for a
user to be a stream administrator at this feature level.
**Feature level 30**
* [`GET users/me/subscriptions`](/api/get-subscriptions), [`GET
/streams`](/api/get-streams): Added `date_created` to Stream
objects.
* [`POST /users`](/api/create-user), `POST /bots`: The ID of the newly
created user is now returned in the response.
Feature levels 28 and 29 are reserved for future use in 3.x bug fix
releases.
## Changes in Zulip 3.1
**Feature level 27**
* [`POST /users`](/api/create-user): Removed `short_name` field from
`display_recipient` array objects.
**Feature level 26**
* [`GET /messages`](/api/get-messages), [`GET /events`](/api/get-events):
The `sender_short_name` field is no longer included in message objects
returned by these endpoints.
* [`GET /messages`](/api/get-messages) : Removed `short_name` field from
`display_recipient` array objects.
## Changes in Zulip 3.0
**Feature level 25**
No changes; feature level used for Zulip 3.0 release.
**Feature level 24**
* The `!avatar()` and `!gravatar()` Markdown syntax, which was never
documented, had inconsistent syntax, and was rarely used, was
removed.
**Feature level 23**
* `GET/PUT/POST /users/me/pointer`: Removed. Zulip 3.0 removes the
`pointer` concept from Zulip; this legacy data structure was
replaced by tracking unread messages and loading views centered on
the first unread message.
**Feature level 22**
* [`GET /attachments`](/api/get-attachments): The date when a message
using the attachment was sent is now correctly encoded as
`date_sent`, replacing the confusingly named `name` field. The
`date_sent` and `create_time` fields of attachment objects are now
encoded as integers; (previously the implementation could send
floats incorrectly suggesting that microsecond precision is
relevant).
* `GET /invites`: Now encodes the user ID of the person who created
the invitation as `invited_by_user_id`, replacing the previous
`ref` field (which had that user's Zulip display email address).
* [`POST /register`](/api/register-queue): The encoding of an
unlimited `realm_message_retention_days` in the response was changed
from `null` to `-1`.
**Feature level 21**
* `PATCH /settings/display`: Replaced the `night_mode` boolean with
`color_scheme` as part of supporting automatic night theme detection.
**Feature level 20**
* Added support for inviting users as organization owners to the
invitation endpoints.
**Feature level 19**
* [`GET /events`](/api/get-events): The `subscription` events for
`peer_add` and `peer_remove` now identify the modified
stream by the `stream_id` field, replacing the old `name` field.
**Feature level 18**
* [`POST /register`](/api/register-queue): Added
`user_avatar_url_field_optional` to supported `client_capabilities`.
**Feature level 17**
* [`GET users/me/subscriptions`](/api/get-subscriptions),
[`GET /streams`](/api/get-streams): Added
`message_retention_days` to Stream objects.
* [`POST users/me/subscriptions`](/api/subscribe), [`PATCH
streams/{stream_id}`](/api/update-stream): Added `message_retention_days`
parameter.
**Feature level 16**
* [`GET /users/me`](/api/get-own-user): Removed `pointer` from the response,
as the "pointer" concept is being removed in Zulip.
* Changed the rendered HTML markup for mentioning a time to use the
`<time>` HTML tag. It is OK for clients to ignore the previous time
mention markup, as the feature was not advertised before this change.
**Feature level 15**
* Added [spoilers](/help/format-your-message-using-markdown#spoilers)
to supported Markdown features.
**Feature level 14**
* [`GET users/me/subscriptions`](/api/get-subscriptions): Removed
the `is_old_stream` field from Stream objects. This field was
always equivalent to `stream_weekly_traffic != null` on the same object.
**Feature level 13**
* [`POST /register`](/api/register-queue): Added
`bulk_message_deletion` to supported `client_capabilities`.
* [`GET /events`](/api/get-events): `delete_message`
events have new behavior. The `sender` and `sender_id` fields were
removed, and the `message_id` field was replaced by a `message_ids`
list for clients with the `bulk_message_deletion` client capability.
All clients should upgrade; we expect `bulk_message_deletion` to be
required in the future.
**Feature level 12**
* [`GET users/{user_id}/subscriptions/{stream_id}`](/api/get-subscription-status):
New endpoint added for checking if another user is subscribed to a stream.
**Feature level 11**
* [`POST /register`](/api/register-queue): Added
`realm_community_topic_editing_limit_seconds` to the response, the
time limit before community topic editing is forbidden. A `null`
value means no limit. This was previously hard-coded in the server
as 86400 seconds (1 day).
* [`POST /register`](/api/register-queue): The response now contains a
`is_owner`, similar to the existing `is_admin` and `is_guest` fields.
* [`POST /set-typing-status`](/api/set-typing-status): Removed legacy support for sending email
addresses, rather than user IDs, to encode private message recipients.
**Feature level 10**
* [`GET users/me`](/api/get-own-user): Added `avatar_version`, `is_guest`,
`is_active`, `timezone`, and `date_joined` fields to the User objects.
* [`GET users/me`](/api/get-own-user): Removed `client_id` and `short_name`
from the response to this endpoint. These fields had no purpose and
were inconsistent with other API responses describing users.
**Feature level 9**
* [`POST users/me/subscriptions`](/api/subscribe), [`DELETE
/users/me/subscriptions`](/api/unsubscribe): Other users to
subscribe/unsubscribe, declared in the `principals` parameter, can
now be referenced by user_id, rather than Zulip display email
address.
* [`PATCH /messages/{message_id}`](/api/update-message): Added
`send_notification_to_old_thread` and
`send_notification_to_new_thread` optional parameters.
**Feature level 8**
* [`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user)
and [`GET /users/me`](/api/get-own-user): User objects now contain the
`is_owner` field as well.
* Added [time mentions](/help/format-your-message-using-markdown#mention-a-time)
to supported Markdown features.
**Feature level 7**
* [`GET /events`](/api/get-events): `realm_user` and
`realm_bot` events no longer contain an `email` field to identify
the user; use the `user_id` field instead. Previously, some (but
not all) events of these types contained an `email` key in addition to
to `user_id`) for identifying the modified user.
* [`PATCH /users/{user_id}`](/api/update-user): The `is_admin` and
`is_guest` parameters were removed in favor of the more general
`role` parameter for specifying a change in user role.
* [`GET /events`](/api/get-events): `realm_user` events
sent when a user's role changes now include `role` property, instead
of the previous `is_guest` or `is_admin` booleans.
* [`GET /realm/emoji`](/api/get-custom-emoji): The user who uploaded a
given custom emoji is now indicated by an `author_id` field, replacing
a previous `author` object that had unnecessary additional data.
**Feature level 6**
* [`GET /events`](/api/get-events): `realm_user` events to
update a user's avatar now include the `avatar_version` field, which
is important for correctly refetching medium-size avatar images when
the user's avatar changes.
* [`GET /users`](/api/get-users) and [`GET
/users/{user_id}`](/api/get-user): User objects now contain the
`avatar_version` field as well.
**Feature level 5**
* [`GET /events`](/api/get-events): `realm_bot` events,
sent when changes are made to bot users, now contain an
integer-format `owner_id` field, replacing the `owner` field (which
was an email address).
**Feature level 4**
* `jitsi_server_url`, `development_environment`, `server_generation`,
`password_min_length`, `password_min_guesses`, `max_file_upload_size_mib`,
`max_avatar_file_size_mib`, `server_inline_image_preview`,
`server_inline_url_embed_preview`, `server_avatar_changes_disabled` and
`server_name_changes_disabled` fields are now available via
`POST /register` to make them accessible to all the clients;
they were only internally available to Zulip's web app prior to this.
**Feature level 3**
* [`POST /register`](/api/register-queue): `zulip_version` and
`zulip_feature_level` are always returned in the endpoint response.
Previously, they were only present if `event_types` included
`zulip_version`.
* Added new `presence_enabled` user notification setting; previously
[presence](/help/status-and-availability) was always enabled.
**Feature level 2**:
* [`POST /messages/{message_id}/reactions`](/api/add-reaction):
The `reaction_type` parameter is optional; the server will guess the
`reaction_type` if it is not specified (checking custom emoji, then
Unicode emoji for any with the provided name).
* `reactions` objects returned by the API (both in `GET /messages` and
in `GET /events`) now include the user who reacted in a top-level
`user_id` field. The legacy `user` dictionary (which had
inconsistent format between those two endpoints) is deprecated.
**Feature level 1**:
* [`PATCH /messages/{message_id}`](/api/update-message): Added the
`stream_id` parameter to support moving messages between streams.
* [`GET /messages`](/api/get-messages), [`GET /events`](/api/get-events):
Added `prev_stream` as a potential property of the `edit_history` object
within message objects to indicate when a message was moved to another
stream.
* [`GET messages/{message_id}/history`](/api/get-message-history):
`prev_stream` is present in `snapshot` objects within `message_history`
object when a message was moved to another stream.
* [`GET /server_settings`](/api/get-server-settings): Added
`zulip_feature_level`, which can be used by clients to detect which
of the features described in this changelog are supported.
* [`POST /register`](/api/register-queue): Added `zulip_feature_level`
to the response if `zulip_version` is among the requested
`event_types`.
* [`GET /users`](/api/get-users): User objects for bots now
contain a `bot_owner_id`, replacing the previous `bot_owner` field
(which had the email address of the bot owner).
* [`GET /users/{user_id}`](/api/get-user): New endpoint added to get
a single user's details by the user's ID.
* [`GET /messages`](/api/get-messages): Add support for string-format
values for the `anchor` parameter, deprecating and replacing the
`use_first_unread_anchor` parameter.
* [`GET /messages`](/api/get-messages), [`GET /events`](/api/get-events):
Message objects now use `topic_links` rather than `subject_links` to
indicate links either present in the topic or generated by linkifiers
applied to the topic.
* [`GET /streams`](/api/get-streams),
[`POST /users/me/subscriptions`](/api/subscribe),
[`PATCH /streams/{stream_id}`](/api/update-stream): Stream objects now
have `stream_post_policy` enum for specifying who can post to the stream,
deprecating and replacing the `is_announcement_only` boolean.
* [`GET /user_uploads/{realm_id_str}/{filename}`](/api/get-file-temporary-url):
New endpoint added for requesting a temporary URL for an uploaded
file that does not require authentication to access (e.g. for passing
from a Zulip desktop, mobile, or terminal app to the user's default
browser).
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events),
`PATCH /realm`: Nobody added as an option for the realm setting
`email_address_visibility`.
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events),
`PATCH /realm`: Added realm setting `private_message_policy`.
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events):
`muted_topics` array objects now are 3-item tuples that include the
stream name, the topic name, and the time when the topic was muted.
Previously, they were 2-item tuples and did not include the time when
the topic was muted.
* [`GET /server_settings`](/api/get-server-settings): Added `gitlab` boolean
to deprecated `authentication_methods` object.
* [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events),
`PATCH /realm`: None added as an option for the realm setting
`video_chat_provider` to disable video call UI.
## Changes in Zulip 2.1
* [`POST /register`](/api/register-queue): Added
`realm_default_external_accounts` to endpoint response.
* [`GET /messages`](/api/get-messages): Added support for
[search/narrow options](/api/construct-narrow) that use stream/user
IDs to specify a message's sender, its stream, and/or its recipient(s).
* [`GET /users`](/api/get-users): Added `include_custom_profile_fields`
to request custom profile field data.
* [`GET /users/me`](/api/get-own-user): Added `avatar_url` field,
containing the user's avatar URL, to the response.
* [`GET /users/me/subscriptions`](/api/get-subscriptions): Added
`include_subscribers` parameter controlling whether data on the
other subscribers is included. Previous behavior was to always send
subscriber data.
* [`GET /users/me/subscriptions`](/api/get-subscriptions):
Stream-level notification settings like `push_notifications` were
changed to be nullable boolean fields (true/false/null), with `null`
meaning that the stream inherits the organization-level default.
Previously, the only values were true/false. A client communicates
support for this feature using `client_capabilities`.
* [`GET /users/me/subscriptions`](/api/get-subscriptions): Added
`wildcard_mentions_notify` notification setting, with the same
global-plus-stream-level-override model as other notification settings.
* [`GET /server_settings`](/api/get-server-settings): Added
`external_authentication_methods` structure, used to display login
buttons nicely in the mobile apps.
* Added `first_message_id` field to Stream objects. This is helpful
for determining whether the stream has any messages older than a
window cached in a client.
* Added `is_web_public` field to Stream objects. This field is
intended to support web-public streams.
* Added `/export/realm` endpoints for triggering a data export.
* `PATCH /realm`: Added `invite_to_stream_policy`,
`create_stream_policy`, `digest_emails_enabled`, `digest_weekday`,
`user_group_edit_policy`, and `avatar_changes_disabled` organization settings.
* Added `fluid_layout_width`, `desktop_icon_count_display`, and
`demote_inactive_streams` display settings.
* `enable_stream_sounds` was renamed to
`enable_stream_audible_notifications`.
* [`POST /users/me/subscriptions/properties`](/api/update-subscription-settings):
Deprecated `in_home_view`, replacing it with the more readable
`is_muted` (with the opposite meaning).
* Custom profile fields: Added `EXTERNAL_ACCOUNT` field type.
## Changes in Zulip 2.0
* [`PATCH /users/me/subscriptions/muted_topics`](/api/mute-topic):
Added support for using stream IDs to specify the stream in which to
mute/unmute a topic.
* [`POST /messages`](/api/send-message): Added support for using user
IDs and stream IDs for specifying the recipients of a message.
* [`POST /messages`](/api/send-message), [`POST
/messages/{message_id}`](/api/update-message): Added support for
encoding topics using the `topic` parameter name. The previous
`subject` parameter name was deprecated but is still supported for
backwards-compatibility.
* [`POST /set-typing-status`](/api/set-typing-status): Added support for specifying the
recipients with user IDs, deprecating the original API of specifying
them using email addresses.
------------------
## Changes not yet stabilized
* [`POST /register`](/api/register-queue): Added `slim_presence`
parameter. Changes the format of presence events, but is still
being changed and should not be used by clients.
[server-changelog]: https://zulip.readthedocs.io/en/latest/overview/changelog.html
[release-lifecycle]: https://zulip.readthedocs.io/en/latest/overview/release-lifecycle.html
[rfc6570]: https://www.rfc-editor.org/rfc/rfc6570.html
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