Agent Island / capabilities
macOS and Windows capability matrix
What v1.7.1 ships, what public source supports, and what the current audit actually ran.
Audited 2026-08-01. A published package is availability evidence, not automatic proof that every UI path behaved identically on both operating systems. This page keeps those claims separate.
| Capability | macOS v1.7.1 | Windows v1.7.1 | Current evidence boundary |
|---|---|---|---|
| Release artifact | Published DMG | Published win-x64 ZIP | Both artifacts are present in the same GitHub release. Homebrew, WinGet, and Scoop point to v1.7.1. |
| Native implementation | SwiftUI universal app | WPF self-contained app | Public source and release metadata support both implementation claims. Neither platform uses Electron. |
| Claude Code and Codex session state | 14/14 current classifier fixtures passed | Released source and tests are present; no Windows runtime fixture run in this audit | The public fixture result is macOS correctness evidence for fourteen listed cases, not cross-platform or future-format proof. |
| Your-turn alerts | Released and source-backed | Released and source-backed; not rerun on a Windows device in this audit | Release and source evidence establish the feature boundary. This audit did not replay every notification, sound, focus, or deep-link path on both systems. |
| Provider usage and reset windows | Current published UI evidence and source | Implementation is present; no current Windows UI verification | Claude and Codex usage pages intentionally describe the currently observed macOS surface and do not infer Windows parity. |
| Estimated API value and report cards | Current published UI evidence and source | Implementation is present; no current Windows UI verification | Estimated API value is not subscription spend, savings, or a provider bill. A source path is not a substitute for a Windows real-device run. |
| Local processing boundary | No Agent Island account or product telemetry | No Agent Island account or product telemetry | Session processing is local. Optional website analytics are separate from the desktop product and require consent. |
| Install routes | Homebrew or DMG | WinGet, Scoop, or ZIP | All three package-manager records were checked at v1.7.1 with hashes matching the GitHub release on 2026-08-01. |
How to read the matrix
Published means an official release artifact exists. Source-backed means the implementation or test contract is visible in the public repository. Current verification means this audit observed the named result on the named platform. These states are not interchangeable.
The current fixture dataset covers fourteen synthetic Claude Code and Codex session-state cases on macOS. It does not measure latency, unknown future transcript formats, Windows UI behavior, downloads, or user outcomes.