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SummonOS for Mac

Native macOS control layer for AI agents, with system access and reversible settings changes.

By RohiRIK. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

SummonOS at a glance

Version
0.2.5 (pre-release)
Released
11 November 2026
Download size
31 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
Artificial Intelligence
Developer
RohiRIK
GitHub stars
4

About SummonOS

An experimental native macOS agent layer: summon coding agents, build SwiftUI tools, and recover supported settings.

How to install SummonOS on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for SummonOS and press Get. OpenDMG downloads version 0.2.5 from RohiRIK's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to SummonOS show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: summonos-0.2.5-macos-universal.zip (31 MB).

What is new in SummonOS 0.2.5

Preview build of SummonOS 0.2.5: universal (Apple silicon and Intel) `summon`, `macctl` and Summon.app.

## Install

```sh
curl -fsSL https://raw.githubusercontent.com/RohiRIK/SummonOS/main/install.sh | bash
```

The installer downloads `summonos-0.2.5-macos-universal.zip`, checks it against `SHA256SUMS`, installs it
with rollback and runs `summon doctor`. Needs macOS 15 or newer.

These preview builds are ad-hoc signed and are not notarized by Apple. macOS may block the first launch;
review the source and publisher before choosing **Open Anyway** in System Settings › Privacy & Security.
The installer downloads with curl, which does not quarantine the files. If you unzip a browser download by hand,
clear the quarantine flag after reviewing it: `xattr -dr com.apple.quarantine ~/Applications/Summon.app`.

## Verify

`shasum -a 256 -c SHA256SUMS`, and the build provenance:
`gh attestation verify summonos-0.2.5-macos-universal.zip -R RohiRIK/SummonOS`.

## What's Changed
* feat: harden Summon runtime and add build identity; SummonOS 0.2.5 by @rohiri-spec in https://github.com/RohiRIK/SummonOS/pull/124

**Full Changelog**: https://github.com/RohiRIK/SummonOS/compare/v0.2.4...v0.2.5

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