There was substantial confusion around this, but I've done some archaeology.
Basically, this was changed back in r0.5.0 by MSC1304 and matrix-org/synapse#3397. Before that, it was indeed the case that state_default was 0 if there was no m.room.power_levels event, but that was confusing and a source of security holes, so we changed it.
matrix-org/matrix-spec-proposals#1656 changed the spec, but apparently overlooked the text in the description.
Reverts: #1478.
Fixes: #861.
* Add information on MSC3758: event_property_is.
* Add information on MSC3966: event_property_contains.
* Add information on MSC3873 dotted-path escape rules.
* Newsfragment
* Update sync filter with ref to appendix.
* Escape example key.
* Fix typos.
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
* Fix links.
* Clarify the appendix a bit.
* Clarify support values.
* Add MSC3980 to changelog.
---------
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
* Mention that `state_default` can be zero by default.
* Changelog
* Update data/event-schemas/schema/m.room.power_levels.yaml
Co-authored-by: Hubert Chathi <hubertc@matrix.org>
---------
Co-authored-by: Hubert Chathi <hubertc@matrix.org>
I've done my best to remove the word "bundle", because I feel like it causes
more confusion than it provides. Instead I have favoured "aggregated child
events" which I think is clearer.
Some general clarification around these parts of the spec.
* `cross_signing_key.yaml`: the parameter documentation already restricts the number of properties
* `receipts.yaml`: use `maxProperties: 0` to say the object is empty (the comment is still there but is not really needed any more)
Signed-off-by: Alexey Rusakov <Kitsune.Ral@users.sf.net>
This strives to fix all remaining cases where additional attributes
(most often 'description' but not only) are provided next to $ref
by wrapping $ref in allOf; and also drops allOf in a couple of places
where $ref is the only element under it.
The syntax is incorrect and would require to use allOf
because a $ref can't have siblings.
However the only field not overwritten of that definition is room_id,
so we include it instead of the $ref
Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
Originally the tags used to be bold, followed by a colon and separated
into two columns in a table. This at least restores the table aspect,
which makes it clear, that font is not an attribute (and similar).
This seems to have gotten lost in the transition to the new design.
Signed-off-by: Nicolas Werner <nicolas.werner@hotmail.de>
* replace "<content>" with "content"
This parameter that's part of the content-repo openapi spec causes generators to mess up
* added changelogs
* Update changelogs/internal/newsfragments/1370.clarification
Co-authored-by: Travis Ralston <travpc@gmail.com>
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Change default room version from 9 to 10 in accordance with MSC3904
* Add changelog entry with assumed PR number.
* Fix missing comma in changelog.
Co-authored-by: Travis Ralston <travpc@gmail.com>
Co-authored-by: Travis Ralston <travpc@gmail.com>
If an object definition already has an example, we shouldn't try to extend that
definition by adding examples derived from the individual properties. Doing so
is confusing, and there is no way to inhibit it when it is not desired. It's
also not what the RapiDoc viewere does, so we end up with examples being
inconsistent.
The top-level `example` in `edu.yaml` was overriding the individual examples
for `edu_type`. Let's fix that by getting rid of the example in `edu.yaml`.
Fixes https://github.com/matrix-org/matrix-spec/issues/805
The OpenAPI 3 spec doesn't allow building examples by composition.
Either the whole example must be a reference, or it has to be included.
Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
I forgot to set the `items` on an array definition, and got an extremely
opaque error. Hopefully this will improve the lives of anyone who makes a
similar mistake in future.
Replace the current stack of hugo templates with a towncrier invocation. The main advantage of this is that it means that the "Changes since last release" section is consistent with the changelogs for the actual releases.
This also changes the release process so that the changelog is generated before tagging, which means that the thing tagged v1.5 is actually the v1.5 spec.
Fixes#908.
Stick a `definition-` on the front of the autogenerated anchors for definition
blocks.
This solves a problem where, for example,
https://spec.matrix.org/unstable/application-service-api/#registration could
refer to either the "Registration" section or the `Registration` definition
therein.
(These anchors are relatively recent: they were added in #1191.
This is based on the behavior of Synapse and Dendrite. Conduit's implementation is already non-compliant in regards to what was already defined in the spec.
Closes#645.
Related to #647 (probably closes it too, unless we want to be more explicit somewhere about what can be changed on default push rules).
Related PR in ruma that would allow to fix Conduit's implementation: ruma/ruma#1364
Signed-off-by: Kévin Commaille zecakeh@tedomum.fr
* Spec reference relationships
MSC: https://github.com/matrix-org/matrix-spec-proposals/pull/3267
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Edits per code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Spec MSC3771: Threaded read receipts
Note: this builds on a (as of writing) non-existent "threading" section, which is part of a different commit.
* Spec MSC3773: Threaded notifications
* changelog
* Various clarifications per review
* Spec MSC3440: Threading (just the base)
Other threading MSCs to follow
* Spec MSC3856: Threads list API
* Spec MSC3715: Add`dir` to `/relations`
* changelog
* Apply suggestions from code review
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Update changelogs/client_server/newsfragments/1254.feature
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Convert `m.receipt.yaml` to traditional YAML
* Spec MSC2285 (private read receipts)
* Add some obvious copyright headers
* Add changelog entries
* Appease the linter
Apparently it hates it when you do this.
* Allow m.fully_read on /receipts
* Apply suggestions from code review
Co-authored-by: Matthew Hodgson <matthew@matrix.org>
Co-authored-by: Matthew Hodgson <matthew@matrix.org>
* Add CORP headers to media repo
MSC: https://github.com/matrix-org/matrix-spec-proposals/pull/3828
* Write weird CSS rules to make added-in work inline in the CS spec
Even though our content doesn't need 2 paragraphs, it's good to have the capability to render it in the future.
* Remove test paragraph
* Refine prose
* spelling is key
* Remove redundant call to resolve-allof
All of the callers to resolve-additional-types already call resolve-allof (or
if not, they should), so this is redundant.
* Update `resolve-additional-types` to take a dict
I want to add more params to this, so first make it take a dict.
* `render-object-table`: take a "title" rather than a "caption"
... which means we can use the result from resolve-additional-types directly.
* render-object-table: support adding an anchor to generated tables.
* resolve-additional-types: generate an id for each returned type
* render-event: pass an anchor_base into resolve-additional-types
This means that it will generate an anchor for each type, whihc will then be
passed into render-object-table and used as an `id` for the table.
* render-operation: pass an anchor_base into resolve-additional-types
* newsfiles
* Fix typo in m.secret.request device event name
I don't think this is supposed to be plural according to the various SDKs
* Add changelog
* Update changelogs/client_server/newsfragments/1135.clarification
* Update changelogs/client_server/newsfragments/1135.clarification
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Clarify that /invite will respond with 200 if the user is already in the room
* Create 1084.clarification
* Update changelogs/client_server/newsfragments/1084.clarification
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Revert "Note a more efficient computation of the auth difference. (#1119)"
This reverts commit a707266e50.
* Changelog
* Delete 1132.misc
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Arrange a few titles
Before this change, PublicRoomsChunk in the spec text could be found in
two places (actually three but the third one is identical to the first
one), defining two (_mostly_ identical but) different schemas.
Ctrl-F'ing through the spec may confuse you with the "wrong" definition.
This commit gives distinct schemas distinct names; aside from
PublicRoomChunk, the same story happens with the derivative of
stripped_state.yaml used in space_hierarchy.yaml (it's not exactly
StrippedStateEvent either).
As for the removal of `PublicRoomsChunks` (plural) - this title is
unnecessary because the tooling would place rather self-explanatory
`[PublicRoomsChunk]` without it, whereas the plural title ends up with
no definition in the spec text.
* Add changelog
* keys.yml: fix one_time_keys object contents
The alternatives previously listed under two additionalProperties levels
are actually one _more_ level deeper; we still can't define them in
a formal way before moving to OpenAPI 3 but at least let's be honest
and say there's always a dict where there's always a dict. Also,
since the same data structure is used in three places now, at least
give it a name, and document the actual definition (once) separately
(not using it now because it's OpenAPI 3).
* Changelog
* openapi_extensions.md: fix typos and leftovers
dump-swagger had to substitute things in the past - these days it
just merges definitions.
* Changelog
In #1042 I incorrectly wrote that the conflicted state set is a set of
pairs (K, V). We later take the union of the conflicted state set and
the auth difference. The latter is a set of events (V) only.
Fix this by making the conflicted state set a set of events rather than
a set of pairs. That is, the conflicted state set is a a `Set[Event]`
instead of a `Set[((type, state key), event)]`.
* Commit to show changes to rich replies section
* Move rich replies to a module
* Add remainder of MSC2674
* Pivot away from MSC3440: Threads
* Add changelog entries so far
* Make a note for why we have aggregations/relations if nothing uses it
* Outright remove threads references
Apparently this breaks the table of contents
* Define MSC2675
* Define MSC3666
* Add note for rich replies?
* Update content/client-server-api/_index.md
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Clarify how ignoring works for aggregations.
* Try to clarify redactions a bit
* Clarify using parent/child language
* Add missing bits of MSC2675
* Add changelog for aggregations
* Appease the linters
* Update data/api/client-server/relations.yaml
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Try to clarify the return of /relations
* Fix required attribute
* Fix wording round 1
* Try to fix pagination
* Copy/paste the endpoint to make Open API happy
* Fix code block examples for rich replies
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Apply suggestions on all 3 endpoints
* Fix description of relationships API
* Fix warning about server-side aggregation/bundling
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Clarification on historical power level handling
* Revert "Clarification on historical power level handling"
This reverts commit f443b3d5a9.
* Clean up
* Let us try this again not using VS Code
* Markdown is full of mysteries
* Move stringy power levels to room versions
* Describe range
* Fix minor issues with previous room version stuff
* Copy/paste v9 into v10
* Describe deprecated formatting
* Paste unmodified auth rules from v8 into v10
* Move 9.1 to 9.3, add 9.1 and 9.2 for integer enforcement
* Add knock_restricted to v10 auth
* Misc cleanup and clarification for fragments
* Describe `knock_restricted` client changes
* Changelogs
* spelling
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Apply code review suggestions manually
* Fix v9 redactions
* Fix auth rules clarity issues
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Remove false integer requirements
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* room_type is not a required parameter in practice
In practice servers seem to mirror what the room create event does and
leave out the room_type when unset.
Signed-off-by: Nicolas Werner <n.werner@famedly.com>
* Add changelog
Signed-off-by: Nicolas Werner <n.werner@famedly.com>
* Also make room_type and allowed_room_ids optional in the openapi
They are optional according to the text, but the openapi marks them as
required instead.
Signed-off-by: Nicolas Werner <n.werner@famedly.com>
* Fix copy and paste error of newsfragment
Signed-off-by: Nicolas Werner <n.werner@famedly.com>
* fix: spaces hierarchy paramater types
- changed `limit` parameter type to integer
- changed `query` parameter type to integer
A floating number does not make any sense here. Also, at least Synapse
does not allow floating point numbers in here.
Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>
* Update changelogs/client_server/newsfragments/1097.clarification
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Reference MSCs where MSCs were not being referenced.
* Alter language to appear consistent and from a single voice.
* Bundle and group various changes together (will affect the final changelog - the rendered one still doesn't bundle appropriately).
* Move entries to the spec area they are intended to be in.
* clarify federation Authorization header an add destination property
* add changelogs
* some clarifications
* more clarifications, fixes
* use HTML in the added-in/changed-in shortcodes
* Apply suggestions from code review
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Italicise primes and brackets in state res desc
I don't like it but it seems to make things look decent in Firefox.
This is probably good enough---we're not Knuth, after all.
Additionally I have avoided the use of `*E*'s` as in "E's prev_events"
since the apostrophe looks poor here.
Resolves#774.
An alternative to #1040.
* Changelog
The spec had an erroneous `room_id` field in a m.typing EDU entry of /sync, `m.read` receipts in `/sync`, and `m.fully_read` room account data objects in the spec. None of these are necessary nor used in practice.
Checking part of the ecosystem for whether clients look for, or homeservers include, these room_id fields, I found that:
Element does not require them, nor does Synapse include them.
Ruma does not include them.
Dendrite does not include them.
nheko/mtxclient does not look for them.
This change removes room_id from the example and OpenAPI schema in each case mentioned above. It only affects the Client-Server spec - the Server-Server spec text remains unchanged.
The field was initially introduced in 0f28f83.
Fixes#3641
The spec says the name field in m.room.name events must not exceed 255 bytes but no servers actually enforce this over the C-S API. Clients should probably already be truncating room names to an appropriate length for their user interface.
Signed-off-by: Aaron Raimist <aaron@raim.ist>
* Fix membership state table and diagram
There were 2 missing cases which are legal:
* `invite->knock` (a fairly silly thing to do, but legal under the auth rules)
* `external->leave (via /kick)` (another somewhat silly thing to do, but no different than `external->ban (via /ban)`)
The state table considered the first as illegal, which is untrue.
* Changelog
* Make the graph prettier
* Update changelogs/client_server/newsfragments/3730.clarification
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
As per MSC3567, the `from` parameter is now optional for the `/messages` endpoint to allow fetching first or latest room content without having to rely on `/sync`
https://github.com/matrix-org/matrix-doc/pull/3567
* Fix m.login.appservice -> m.login.application_service
Implementations seem to agree with the proposal, so I'd suggest we fix the typo in the spec. I don't *think* this needs a MSC as the original proposal was fine, and this was just a copy error.
* Create 3711.clarification
* Update 3711.clarification
* Update changelogs/3711.clarification
Co-authored-by: Travis Ralston <travisr@matrix.org>
Co-authored-by: Travis Ralston <travisr@matrix.org>
* Fix knock->leave transition in auth rules
This was an oversight from knocking being added.
For safety, this has been verified as at least intended by Synapse to work:
f5e2cde3f5/synapse/event_auth.py (L390-L391)
* changelog
Fixes#3305Fixes#3380
The idea here is to better distinguish between a 'raw' event (as we send over the wire), and the
'serialised' format, as sent in responses to the C-S api and in `PUT /_matrix/app/v1/transactions/{txnId}`.
It's made more complicated by the fact that there are _two_ serialisation formats, one used by `/sync`
and `/notifications`, and one by everything else (the difference being whether `room_id` is included).
In an ideal world, we wouldn't repeat `SerialisedEvent` every time it's used, and instead just link to the
first reference, but that's a job for another day.
Another job for another day is to get rid of things like `sync_state_event.yaml` (which is now used
only in one place, so should be inlined.)
* Update documentation style & fix room version heading order
Also add a missing signing key section to v6.
This additionally contains various edits to the fragments to have them make a little bit more sense in context.
Finally, this updates various aspects of the documentation style which haven't previously been considered - they're added here considering we're in the area.
* changelog
* enhanced changelogs
* Minor wording adjustments
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Update several spots where C-S API was still using r0 APIs
Signed-off-by: Aaron Raimist <aaron@raim.ist>
* Add changelog
Signed-off-by: Aaron Raimist <aaron@raim.ist>
Fixes#2237.
Corrects the response schemas for:
```
PUT /user/{user_id}/account_data/{account_dataType}
PUT /user/{user_id}/rooms/{roomId}/account_data/{type}
PUT /directory/list/room/{roomId}
PUT /sendToDevice/{eventType}/{txnId}
POST /account/3pid
POST /account/3pid/add
POST /account/3pid/bind
```
* Room versions 8 and 9: Restricted rooms
MSCs:
* https://github.com/matrix-org/matrix-doc/pull/3083
* https://github.com/matrix-org/matrix-doc/pull/3289
* https://github.com/matrix-org/matrix-doc/pull/3375
* Changelogs
* Capitalization
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Remove verbiage for spaces because they don't exist
* Iterations on text
* Another clarification
* Make error code descriptions consistent
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Incorporate from merge
* Misc language update per review
* Update accuracy before splitting auth rules
* fix wtf moment
* Fix up v8 and v9 to match "fully specify room versions"
* Scope auth events selection to room version
* Apply consistency
* Add changelogs
* Review part 1
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Split out redaction sections
* Clarify general case of join conditions
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* First iteration of specifying Spaces
MSCs:
* https://github.com/matrix-org/matrix-doc/pull/3288
* https://github.com/matrix-org/matrix-doc/pull/2946
* https://github.com/matrix-org/matrix-doc/pull/1772
Note that this makes modifications to the underlying MSCs as well. These are intended to be minor edits to aid clarity/accuracy of the MSCs, as per the proposal process. Functionally, clients and servers might need to change their behaviour slightly as is expected of implementing this stuff early. Synapse has these changes (alongside backwards compatibility) here: https://github.com/matrix-org/synapse/pull/11667
* add changelogs
* Accuracy per review
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* fully prefix new endpoints
* Fully prefix endpoint in 3616 too
* Fix ordering example
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Add registration token UIA type
MSC: https://github.com/matrix-org/matrix-doc/pull/3231
**Note**: This introduces the endpoint as v1 rather than r0 given the global versioning changes landed between the acceptance of the MSC and now.
* Fix swagger
* Changelogs
* Update data/api/client-server/registration_tokens.yaml
Co-authored-by: Hubert Chathi <hubert@uhoreg.ca>
Co-authored-by: Hubert Chathi <hubert@uhoreg.ca>
* Copy spec PR near-verbatim from past PR
With light review being addressed.
https://github.com/matrix-org/matrix-doc/pull/3168
* Alter for modern day
* Add changelog
* specify that we're using the grammar
* Add HTTP 403 to possible profile responses
Some servers may not allow profile lookup over federation, and thus
respond to GET /_matrix/client/v3/profile/{userId} with an HTTP 403.
For example, Synapse can be configured to behave in this way by setting:
allow_profile_lookup_over_federation=false
Thus, this behavior already exists in the wild, and may cause issues for
clients such as https://github.com/vector-im/element-web/issues/17269.
Synapse could alter its behavior and return an HTTP 404 in these cases,
but amending the Spec seems preferable to align with extant behavior.
Further, allowing HTTP 403 gives clients more specific information as to
why a request has failed, enabling more precise error handling.
Signed-off-by: Dan Callahan <danc@element.io>
* Update changelogs/client_server/newsfragments/3530.clarification
Co-authored-by: Travis Ralston <travpc@gmail.com>
* Annotate misc data about error
Co-authored-by: Travis Ralston <travpc@gmail.com>
Co-authored-by: Travis Ralston <travisr@matrix.org>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Hubert Chathi <hubertc@matrix.org>
Co-authored-by: Travis Ralston <travisr@matrix.org>
Fixes#3465. The change adds a line explicitly warning developers that the base_url of client well_known may or may not include a trailing slash and to be prepared to handle both cases.
* Clarify that E0 and E1 are not returned
* Clarify that ASCII art diagram 2 refers to diagram 1
* Correct third ASCII art diagram
To match the spacing in. Borked in the move to new docs format.
55aed1d296/specification/client_server_api.rst (L1610-L1615)
* Make ASCII art 3 follow from ASCII art 2
* Explain how to fill the gap
* Create 3543.clarification
* Update content/client-server-api/_index.md
Co-authored-by: Travis Ralston <travisr@matrix.org>
Remove a bunch of fields from the `unsigned` property of PDUs. These things
shouldn't be passed over the Federation API, and they *really* shouldn't be
trusted if they are sent by another server.
* `replaces_state` *is* returned by Synapse, but probably shouldn't
be.
* `redacted_because`, `prev_sender` and `prev_content` are not sent by Synapse.
Split the text about event IDs and event formats into separate sections. This
is largely to make it easier to link to, but I think the resulting text makes
more sense too.
* Remove entries which don't affect the rendered spec (sorry people using the swagger schemas - we'll have to figure out a changelog for you). See https://github.com/matrix-org/matrix-doc/issues/3475
* Note that a breaking change is removed by this commit: key backup was introduced in this release cycle, so is not breaking.
* Use uniform references to MSCs ("as per MSC0000").
* General rewording to be consistent with the overall voice of the changelog.
* Condensing of entries where needed to make them fit in the changelog.
* Rewording to collapse entries into fewer lines.
* Spell "deprecation" correctly in file extension.
This fixes the behaviour to match what synapse implements in practice.
If you use threepidCreds, you will just get an error about a missing
threepid_creds field. Synapse also treats this as an object. All clients
also seem to send threepid_creds, if they work on Synapse. Since
matrix.org requires an email currently for registration, most clients
that implement registration, will hit this issue.
a0f48ee89d/synapse/handlers/ui_auth/checkers.py (L145)fixes#3156fixes#2189
Signed-off-by: Nicolas Werner <nicolas.werner@hotmail.de>
* Remove extra pyprojects and update changelog docs
* Add script for rendering the changelog
* Add docs for how to release the spec
* Move legacy changelogs out of the way
* Clarify how redacted_because actually works for events
* changelog
* mention federation
* Fix wording
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
This tweaks the DAG to be simpler, with two linear event chains E4 -> E3
-> E2 -> E1 and E6 -> E5 -> E2 -> E1. The extremities of the DAG are now
the first and only point in the DAG where multiple event parents occur.
Since the point of the diagram is to demonstrate this very situation,
it's better didactically if there is only one such situation in the
diagram.
The Pagination section in the C-S API was, basically, full of rubbish. I think that anything of any value it contained was repeated either directly on the API definitions or in the text specific to syncing at https://spec.matrix.org/unstable/client-server-api/#syncing.
The conventions I've added to the Appendices are based on the discussions in #1898. They are there because I don't want to have to go through it all again next time we add a paginated API.
Fixes: #1898Fixes: #2268
Apparently, in response to a /_matrix/federation/v1/user/devices/{userId} request, Synapse actually returns a key called "self_signing_key" instead of "self_signing_keys".
Richard van der Hoff