Big Arrow vs Temporal

Big Arrow

An agent can show a person which control to click, with a labelled arrow that needs no permission to draw, never takes focus and always removes itself. The tool is a week old at version 0.4.6, runs only on macOS, reports no answer beyond how an arrow ended, and has no security policy.

Temporal

Waits of any length with a timeout survive worker restarts and deploys. No reviewer inbox, notifications or routing, so the human side is all your code.

Big Arrow

1. Open the exact System Settings pane or URL first, then point at the one control left for the person
2. Write the sign as a full sentence that names the action and, for approvals or payments, what the click does
3. Pass --app or --window for any target inside an app, so it is raised and the arrow hides while covered
4. On exit 4, run bigarrow doctor and ask the person to grant Accessibility to the app running your shell, not to bigarrow
5. Call bigarrow stop once the step is done, and add bigarrow stop --hook as a Claude Code UserPromptSubmit hook

Temporal

1. Put the decision in a typed Signal payload (approver, decision, comments, timestamp) instead of a bare boolean
2. Always wait with a timeout and treat the timeout path as a rejection or an escalation on purpose
3. Use the workflow ID as the approval ID, so the reviewer's tool only needs one value to send the Signal
4. Use an Update instead of a Signal when the approver's tool needs an acknowledgement back
5. Expect ResourceExhausted under load and let the SDK retry it, since signals are throttled last