$ cat blog/agent-island-1-5-1

Agent Island 1.5.1: out-of-quota alarms and one-click re-auth

A historical release where macOS and Windows first shipped under the same version number. Current platform capabilities can still differ and are documented separately.

Out of quota is now its own alarm

The turn alarm means "come back and reply". Hitting a rate limit is a different event that deserves a different interruption — before 1.5.1, your 5-hour window could hit 100% while you were away, and every session just quietly sat blocked. Now the moment a 5-hour or weekly window reaches 100%, a distinct full-screen alarm fires with the reset time on it ("Resets at 15:55 (~2h)").

The details are tuned to not be annoying: it fires once per reset cycle (a percentage jittering around 100% can't re-alarm), it warms up on launch so starting the app inside an already-exhausted window stays silent, and it respects the master alarm switch.

Re-authenticate without a terminal

When Claude's usage endpoint starts demanding a re-login — which happens to every long-lived token eventually — the old flow spawned a Terminal window running claude /login and left you to paste a code. In 1.5.1 the Re-authenticate button opens the real claude.com authorize page in your default browser, reuses your existing claude.ai session (usually a single click on "Authorize"), catches the OAuth redirect on a local loopback listener, and writes the fresh token pair back to the same credential store the CLI uses. No terminal, no copy-paste. The CLI flow stays as an automatic fallback.

Fewer false alarms

  • Rate-limit banners no longer fire "It's your turn". Claude writes limit messages with the same JSON envelope as a finished turn; they're flagged isApiErrorMessage and now excluded. Being told to wait is not a turn.
  • Codex subagent threads are silent by default. Orchestrator fan-out finishes children constantly; those no longer raise alarms or drive the logo. A Settings toggle brings them back if you want them — full story here.

"Open thread" lands where you expect

Two navigation fixes. Codex: the deep link is now delivered to the running Codex app directly — the codex:// URL scheme tends to be claimed by stale duplicate handlers, and routing through the system default could wake the wrong one. Claude: the claude://resume deep link turned out to start a new session rather than resume one, so it's gone; "Open thread" now resumes the real session via claude --resume in a terminal, from the session's own working directory.

Quieter internals

  • Usage sync can no longer freeze at "synced 19 minutes ago": requests time out at 25 seconds and a watchdog restarts a wedged refresh.
  • Historical: this release tightened auto-resume safety checks. Auto-resume has since been retired and is not part of the current product.
  • The Cost page is hidden by default on both platforms — Settings → Display brings it back.

Windows, version-aligned

Windows joined this historical release at the same version number. The release included the subagent filter, rate-limit fixes, browser re-auth, a branded tray icon, and simplified placement. This is a record of v1.5.1, not a statement that every current macOS feature is available on Windows.


Download from GitHub Releases — macOS DMG and Windows zip on the same tag. On macOS, existing installs update via Sparkle. Full details in the changelog.