SiriusMsg is a signed macOS app and background agent that bridges Apple Messages to AI agents through a local, allowlist-gated service.
This public repository is for release distribution:
- GitHub Pages website
- notarized DMG downloads through GitHub Releases
- release notes and checksums
- security and install information
The development source repository is private. This repository should not contain source code, signing material, Apple credentials, private service tokens, local database files, or generated operational evidence from a developer machine.
Download the latest notarized DMG from:
https://github.com/siriusagent/siriusmsg/releases/latest/download/SiriusMsg-notarized.dmg
The latest release page is:
https://github.com/siriusagent/siriusmsg/releases/latest
Build 2 replacement note: the original May 26 DMG was replaced on May 27 with a fresh notarized DMG that contains the release Sparkle public key. New downloads from the latest release URL receive the corrected app bundle.
- macOS 15 or later
- Apple Messages configured on the Mac
- Full Disk Access for SiriusMsg when prompted
- Automation permission for SiriusMsg to send through Messages.app
SiriusMsg starts with no chats allowed. You choose the conversations that agents can receive.
SiriusMsg reads local Messages data read-only, sends through Messages.app, and keeps adapter integrations behind the signed app and agent boundary. The app and agent should not log message bodies, expose raw database rows to adapters, or offer an all-chats mode in v1.
The website documents the current consumer surfaces:
SiriusMsgKitfor Swift clients that connect to the authenticated local service- bundled
siriusmsgPython adapter package for async handler authors - local protocol boundary for non-Swift clients
- Sirius Agent integration pattern, a sanitized reference for wiring an agent runtime without publishing private Sirius internals
SDK consumers receive sanitized events and return adapter decisions. SiriusMsg keeps Messages permissions, service auth, cursor progress, ACK policy, reply sending, and send confirmation inside the signed app and agent boundary.
Each public release should include:
SiriusMsg-notarized.dmgSiriusMsg-notarized.dmg.sha256- release notes
- appcast metadata for Sparkle updates
Verify the checksum after download:
shasum -a 256 SiriusMsg-notarized.dmgCompare the output with SiriusMsg-notarized.dmg.sha256 from the same release.
The GitHub Pages site is stored in site/ and deployed by the Pages workflow.
Local preview:
python3 -m http.server 4173 -d siteOpen:
http://127.0.0.1:4173/