v26.01

Release post: https://mau.fi/blog/2026-01-mautrix-release/

• Added notice if dry run is enabled (thanks to @nexy7574 in #46).
• Added support for using MSC4323 to suspend users (thanks to @nexy7574 in #40).
• Added /banserver command to the report interception system (thanks to @nexy7574 in #48).
• Switched command system to use MSC4391.
• Changed !match and !search commands to also search watched lists with the dont_apply flag.
• Fixed changes to the skip_acl list in protected rooms config not being applied correctly.

v25.12

Release post: https://mau.fi/blog/2025-12-mautrix-release/

• Updated Docker image to Alpine 3.23.
• Added endpoints for deleting bots and management rooms.
• Added endpoint for fetching own management rooms using a Matrix access token.
  • The Matrix-authed endpoints are disabled by default and can be enabled in the config. They will be used for a management web interface in the future.
• Changed !match and !search command to always only look in watched lists, regardless of untrusted flag.
• Fixed new bans trying to ban users in rooms that were unprotected earlier.

v25.11

Release post: https://mau.fi/blog/2025-11-mautrix-release/

• Added flag for force purging a room.
• Added support for new /sign endpoint for MSC4284 policy servers (thanks to @nexy7574 in #44).
• Fixed bots trying to remove bans made by other bots on the same Meowlnir instance when a policy is removed.
• Fixed kick command not reading room parameter correctly (thanks to @nexy7574 in #45).
• Removed unnecessary 10 second sleep when first creating a bot.

v25.10

Release post: https://mau.fi/blog/2025-10-mautrix-release/

• Switched to calendar versioning.
• Added untrusted flag to enforce membership checks before accessing policy list cache.
• Added automatic bot provisioning command with configuration defined in the meowlnir4all section.
• Added command to change bot profile from management room.

v0.8.0

Release post: https://mau.fi/blog/2025-09-mautrix-release/

• Added PDU validation to policy server.
• Added note for policy list change notices that were delayed.
• Added command flag to kick user in a specific room only (thanks to @nexy7574 in #39).
• Added option to not require encryption in management room even if encryption is set up in config.
• Fixed policy server redacting events multiple times.
• Fixed spoilers in bot notices not being applied properly in some cases.
• Fixed policy list cache not handling removals of duplicate policies correctly.

v0.7.0

Release post: https://mau.fi/blog/2025-08-mautrix-release/

• Bumped minimum Go version to 1.24.
• Added support for creator power in room v12.
• Added appservice ping at startup to ensure homeserver -> meowlnir connection works similar to what bridges do.
• Added support for federated_user_may_invite callback and MSC4311.
• Added custom API for querying policy lists that Meowlnir has cached.
• Fixed various bugs in experimental built-in policy server.
  • Note that the policy server is not considered stable yet, so it should not be used in production.

v0.6.0

Release post: https://mau.fi/blog/2025-06-mautrix-release/

• Added experimental built-in policy server as per MSC4284 (thanks to @nexy7574 in #21).
• Added support for deleting rooms (manually with a command, when receiving a ban policy, or when discovering a room with a ban policy).
• Added support for referencing users by matrix.to URL or matrix: URI in most commands.
• Added support for sending redact_events flag on ban events as per MSC4293.
• Changed command output to hide potentially sensitive names (thanks to @JadedBlueEyes in #23).
• Changed invite block notices to not include intentional mentions.
• Changed !match command to allow querying multiple entities at once.
• Updated Docker image to Alpine 3.22.
• Fixed ban removals sending empty entity/reason/recommendation fields instead of omitting them entirely.
• Fixed room reporting endpoint (thanks to @spaetz in #24).

v0.5.0

Release post: https://mau.fi/blog/2025-05-mautrix-release/

• Added option to suppress notifications of policy list changes.
• Added config option for customizing which ban reasons trigger automatic redactions (thanks to @nexy7574 in #18).
• Added !deactivate command to deactivate local accounts using the Synapse admin API.
• Added support for automatically suspending local accounts using the Synapse admin API when receiving a ban policy.
  • Must be enabled per-policy-list using the auto_suspend flag.
• Added debouncing for server ACL updates to prevent spamming events when multiple changes are made quickly.
• Added deduplication to management room commands to prevent accidentally sending bans that already exist.
• Fixed removing hashed policies using commands.
• Fixed fallback redaction mechanism not redacting state events (thanks to @nexy7574 in #19).
• Fixed the API returning an invalid response when creating a management room.
• Switched to mautrix-go's new bot command framework for handling commands.
• Removed policy reason from error messages returned by antispam API.

v0.4.0

Release post: https://mau.fi/blog/2025-04-mautrix-release/

• Added support for automatic unbans (thanks to @nexy7574 in #2].
• Merged separate user and server ban commands into one with validation to prevent banning invalid entities.
• Added !send-as-bot command to send a message to a room as the moderation bot.
• Added support for redacting individual events with !redact command.
• Added !redact-recent command to redact all recent messages in a room.
• Added !powerlevel command to change a power level in rooms.
• Added !help command to view available commands.
• Added !search command to search for policies using glob patterns.
• Added support for redacting messages on all server implementations (thanks to @nexy7574 in #16).
• Fixed server ban evaluation to ignore port numbers as per the spec.

v0.3.0

Release post: https://mau.fi/blog/2025-03-mautrix-release/

• Added support for managing server ACLs.
• Added support for MSC4194 as an alternative to database access for redacting messages from a user efficiently.
• Made encryption and database access optional to allow running with non-Synapse homeservers.
• Added !kick command to kick users from all protected rooms.
• Added support for blocking incoming invites on Synapse.
  • Requires installing the synapse-http-antispam module to forward callbacks to Meowlnir.
• Added support for MSC4204: m.takedown moderation policy recommendation.
• Added support for MSC4205: Hashed moderation policy entities.
• Fixed events not being redacted if the user left before being banned.
• Updated !match command to list protected rooms where the user is joined.
• Changed report endpoint to fetch event using the user's token instead of the bot's (thanks to @nexy7574 in #3).
• Changed ban execution to ignore policies with the reason set to the string <no reason supplied>. The ban will be sent without a reason instead.
• Changed management room to ignore unverified devices to implement MSC4153.
• Changed API path prefix from /_matrix/meowlnir to /_meowlnir.