CoIsland

The island expands from the notch and lists new, acknowledged and resolved alerts, each with its rows, notes and activity. You decide when an alert moves to the next state, and no rule closes one for you. That matters when a red build is expected and you don't want it cleared before you've read it.

Connectors cover calendar and mail, code and deploys, issues and docs, errors and on-call, data, web and scripts, plus Stripe for billing. GitHub, GitLab, Jira, Linear, Sentry, Datadog, Snowflake, Postgres and a plain HTTP check sit in the same list, so a work stack and a hobby stack can share one app. Each connector is read-only where the vendor allows it, and setup is a token rather than an OAuth dance through a browser.

A monitor is one query plus a schedule. You write JQL for Jira, a search string for Sentry, a Linear filter or a SQL statement for Snowflake, so the checks match how you already think about each tool. Anything that returns rows can become an alert, and a shell command covers the internal script nobody wrote a dashboard for.

Any alert can go to Claude Code, Codex or Cortex Code, which opens in a terminal underneath the alert with the whole incident as its first message. Claude Code and Codex start in their auto modes and ask before anything destructive, while Cortex Code asks before it acts at all. The coding agent handoff is what separates this from a plain notification list: the agent starts with context instead of a blank prompt, and it still can't close the alert.

CoIsland keeps history for 62 days and charts alerts over 24 hours, 7 days or 30 days against the previous period. You get actionability, median time to acknowledge, median time to resolve and a list of the noisiest monitors. That turns "too many alerts" into a decision about which two checks to delete.

The app talks to your tools directly from the Mac. There's no relay server, no telemetry and no sign-in, and credentials live in the Keychain rather than a vendor database. The appeal of local first monitoring is mostly about blast radius: a breach at CoIsland can't leak tokens it never stored, and uninstalling leaves nothing behind on someone else's disk.