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MSC4381: Remove plaintext sender key

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

disposition-merge

e2e

kind:maintenanceMSC which clarifies/updates existing specMSC which clarifies/updates existing spec

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4381

#4381 In matrix-org/matrix-spec-proposals;

· tulir opened on Nov 20, 2025

MSC4380: Invite blocking

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:coreMSC which is critical to the protocol's successMSC which is critical to the protocol's success

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

safety

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4380

#4380 In matrix-org/matrix-spec-proposals;

· richvdh opened on Nov 18, 2025

MSC4356: Recently used emoji

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:featureMSC for not-core and not-maintenance stuffMSC for not-core and not-maintenance stuff

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4356

#4356 In matrix-org/matrix-spec-proposals;

· Johennes opened on Sep 16, 2025

MSC4335: M_USER_LIMIT_EXCEEDED error code

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

implementation-needs-checkingThe MSC has an implementation, but the SCT has not yet checked it.The MSC has an implementation, but the SCT has not yet checked it.

kind:maintenanceMSC which clarifies/updates existing specMSC which clarifies/updates existing spec

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

unresolved-concernsThis proposal has at least one outstanding concernThis proposal has at least one outstanding concern

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4335

#4335 In matrix-org/matrix-spec-proposals;

· hughns opened on Aug 29, 2025

MSC4313: Require HTML <code>&lt;ol&gt;</code> <code>start</code> Attribute support

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:maintenanceMSC which clarifies/updates existing specMSC which clarifies/updates existing spec

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4313

#4313 In matrix-org/matrix-spec-proposals;

· HarHarLinks opened on Jul 15, 2025

MSC4267: Automatically forgetting rooms on leave

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:maintenanceMSC which clarifies/updates existing specMSC which clarifies/updates existing spec

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4267

#4267 In matrix-org/matrix-spec-proposals;

· Johennes opened on Feb 17, 2025

MSC4230: Flag for animated images

client-serverClient-Server APIClient-Server API

disposition-merge

kind:featureMSC for not-core and not-maintenance stuffMSC for not-core and not-maintenance stuff

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

unresolved-concernsThis proposal has at least one outstanding concernThis proposal has at least one outstanding concern

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4230

#4230 In matrix-org/matrix-spec-proposals;

· dbkr opened on Nov 21, 2024

MSC4186: Simplified Sliding Sync

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

featureSuggestion for a significant extension which needs considerable considerationSuggestion for a significant extension which needs considerable consideration

kind:coreMSC which is critical to the protocol's successMSC which is critical to the protocol's success

matrix-2.0Required for Matrix 2.0Required for Matrix 2.0

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

unresolved-concernsThis proposal has at least one outstanding concernThis proposal has at least one outstanding concern

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4186

#4186 In matrix-org/matrix-spec-proposals;

· erikjohnston opened on Aug 30, 2024

MSC4169: Backwards-compatible redaction sending using <code>/send</code>

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:maintenanceMSC which clarifies/updates existing specMSC which clarifies/updates existing spec

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4169

#4169 In matrix-org/matrix-spec-proposals;

· tulir opened on Jul 7, 2024

MSC4168: Update <code>m.space.*</code> state on room upgrade

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:maintenanceMSC which clarifies/updates existing specMSC which clarifies/updates existing spec

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

unresolved-concernsThis proposal has at least one outstanding concernThis proposal has at least one outstanding concern

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 4168

#4168 In matrix-org/matrix-spec-proposals;

· Kladki opened on Jul 6, 2024

MSC2666: Get rooms in common with another user

00-weekly-pingsTracking for weekly pings in the SCT office. 00 to make it first in the labels list.Tracking for weekly pings in the SCT office. 00 to make it first in the labels list.

client-serverClient-Server APIClient-Server API

disposition-merge

kind:featureMSC for not-core and not-maintenance stuffMSC for not-core and not-maintenance stuff

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 2666

#2666 In matrix-org/matrix-spec-proposals;

· Half-Shot opened on Jul 5, 2020

MSC2545: Image Packs (Emoticons &amp; Stickers)

disposition-merge

kind:featureMSC for not-core and not-maintenance stuffMSC for not-core and not-maintenance stuff

proposalA matrix spec change proposalA matrix spec change proposal

proposed-final-comment-periodCurrently awaiting signoff of a majority of team members in order to enter the final comment period.Currently awaiting signoff of a majority of team members in order to enter the final comment period.

unresolved-concernsThis proposal has at least one outstanding concernThis proposal has at least one outstanding concern

Status: Open (in progress).

matrix-org/matrix-spec-proposalsnumber 2545

#2545 In matrix-org/matrix-spec-proposals;

· Sorunome opened on May 15, 2020