currently undocumented

webhooks

• 4.0.0 admin webhooks https://github.com/mastodon/mastodon/pull/18510
• 4.1.0 account.approved webhook https://github.com/mastodon/mastodon/pull/22938
• 4.2.0 report.updated https://github.com/mastodon/mastodon/pull/24211

api

• 4.1.0 hide_collections param on PATCH account/update_credentials https://github.com/mastodon/mastodon/pull/22790
• 4.1.0 roles on Account entity https://github.com/mastodon/mastodon/pull/23255
  • https://github.com/mastodon/mastodon/issues/28327
• 4.1.0 requested_by on Relationship entity https://github.com/mastodon/mastodon/pull/20785
• 4.1.0 policy on WebPushSubscription entity https://github.com/mastodon/mastodon/pull/23210
• 4.1.0 reading:autoplay:gifs on api/v1/preferences (but not update_credentials?) https://github.com/mastodon/mastodon/pull/22706/files
• 4.1.0 use RoleSerializer for Admin::Account https://github.com/mastodon/mastodon/pull/23290
  • https://github.com/mastodon/mastodon/issues/28327
• 4.1.0 notifications limit raised from 15/30 to 40/80 https://github.com/mastodon/mastodon/pull/23348
• 4.1.0 api rate limit per account 300 -> 1500 (new limit 300 per token) https://github.com/mastodon/mastodon/pull/23347
• 4.1.0 streaming/metrics https://github.com/mastodon/mastodon/pull/23388
• 4.1.0 configuration.urls.status on api/v2/instance (the changelog is wrong, it claims v1 instead) https://github.com/mastodon/mastodon/pull/23390
• 4.1.0 PUT /api/v1/statuses/:id now takes an extra media_attributes[] array parameter with the id of the updated media and their updated description, focus, and thumbnail https://github.com/mastodon/mastodon/pull/20878
• 4.2 safeguard_mentions on POST /api/v1/statuses https://github.com/mastodon/mastodon/pull/18350
• 4.2 memorial on Account entity https://github.com/mastodon/mastodon/pull/23591
• 4.2 trends management api https://github.com/mastodon/mastodon/pull/24257
• 4.2 statuses/:id/history now returns at least one item when status is edited (the latest edit, at least) https://github.com/mastodon/mastodon/pull/25510
• 4.2 mark conversation unread https://github.com/mastodon/mastodon/pull/25509
• 4.2 forward_to_domains on POST /api/v1/reports https://github.com/mastodon/mastodon/pull/25866
• 4.2 api/v1/instance/languages https://github.com/mastodon/mastodon/pull/24443
• 4.2 CredentialAccount entity now includes more params https://github.com/mastodon/mastodon/pull/26998
• 4.3 hide_collections on Account entity (used to show a different placeholder text) https://github.com/mastodon/mastodon/pull/27791
• 4.3 allow_with_approval on email_domain_blocks API https://github.com/mastodon/mastodon/pull/28468
• 4.3 Add api/v1/annual_reports https://github.com/mastodon/mastodon/pull/28693
• 4.3 Add digest to admin/domain_blocks https://github.com/mastodon/mastodon/pull/29092
• 4.3 sources property on api/v2/suggestions https://github.com/mastodon/mastodon/pull/29108
• 4.3 notification requests and policies https://github.com/mastodon/mastodon/pull/29366
  • 4.3 notification policies v2 https://github.com/mastodon/mastodon/pull/31343
• 4.3 api/v1/timelines/link https://github.com/mastodon/mastodon/pull/30381
• 4.3 filtered attribute on notifications https://github.com/mastodon/mastodon/pull/31011
• 4.4 annual reports API https://github.com/mastodon/mastodon/pull/32709

things to test / document

• setting an invalid in_reply_to_id when doing POST /api/v1/statuses https://github.com/mastodon/mastodon/issues/13473

env

• 4.1.0 SIDEKIQ_CONCURRENCY https://github.com/mastodon/mastodon/pull/19589
• 4.1.0 DB_POOL https://github.com/mastodon/mastodon/pull/23470
• 4.1.0 MIN_THREADS https://github.com/mastodon/mastodon/pull/21048

tootctl

• 4.1.0 media remove has new flags https://github.com/mastodon/mastodon/pull/22149
• 4.1.0 accounts delete has new flags https://github.com/mastodon/mastodon/pull/22328
• 4.1.0 accounts migrate https://github.com/mastodon/mastodon/pull/22330
• 4.1.0 accounts prune https://github.com/mastodon/mastodon/pull/18397
• 4.1.0 domains purge https://github.com/mastodon/mastodon/pull/22063
• 4.2 new option for ip_blocks tootctl https://github.com/mastodon/mastodon/pull/24870
• 4.2 tootctl accounts create has new flag --approve https://github.com/mastodon/mastodon/pull/24533
• 4.2 tootctl accounts approve --number sorting was not guaranteed; now it is https://github.com/mastodon/mastodon/pull/24605

???

• 3.3.0 object storage failure now returns 503 in some API methods
• 3.2.0 /api/v1/crypto added but commented out
  • 4.3.0 removed entirely

user guide

• "lock account" is now "require follow requests"
• "list this account on the directory" is now "suggest account to others"
• "hide your network" is now "hide your social graph"
• change order of dropdown menu on posts to be more intuitive in web UI
• change option labels on edit profile page
• change max image dimensions (previously 1280px square, then 1920x1080 unless https://github.com/mastodon/mastodon/pull/23322 is merged, but then https://github.com/mastodon/mastodon/pull/23726 got merged)
• can now upload webp, wave, avif, heic
• custom emoji limit raised from 50kb to 256kb
• authentication history
• automatically delete old posts
• filter search results by author, using from: syntax
• hint about missing media attachment descriptions
• timed mutes
• private boosts
• explore page
• relationship manager
• hashtag normalization
• full text search params
• attribution domains
• lists

admin guide

• figure out what's out of date, if any
• 4.0.0 authorized_fetch tips need to be updated?
• figure out SSO stuff
• install guide - prefer SMTP_TLS over SMTP_ENABLE_STARTTLS? https://github.com/mastodon/mastodon/issues/23180
• OpenID Connect support https://github.com/mastodon/mastodon/pull/16221

project dev guide

client dev guide

technical

• add CONTRIBUTING.md
• note that mf2 (microformats 2) is removed?
• nodeinfo?
• rss?
• clarify stuff around ld sigs
• clarify update_credentials vs preferences (especially when it comes to changing those values via PUT/PATCH) https://github.com/mastodon/documentation/pull/1152
• clarify that ids are not "string representations of numbers" https://github.com/mastodon/mastodon/issues/25244
• 4.2 toot:indexable flag https://github.com/mastodon/mastodon/pull/26485
• 4.2 memorial now federates as toot:memorial https://github.com/mastodon/mastodon/pull/26583

Start with the unchecked entries under the API, environment, tootctl, user guide, admin guide, and technical sections, using their linked Mastodon pull requests and issues as references. Compare each item with the corresponding current documentation section; done means the relevant changes are documented and the checklist accurately reflects what remains.