Email → calendar event

Detect meeting requests in email and emit a structured event with start/end in ISO format.

The prompt

Copy this verbatim. Replace the {{ … }} placeholders with your values.

<instructions>
Determine whether the email proposes a specific meeting time. If yes, extract the event.
If no, return {"is_meeting": false}.

Assume the reader's timezone is in <user_tz>. Convert times to that timezone if the email gives a different one.
Today's date is in <today>.

Return JSON inside <result> tags.
</instructions>

<user_tz>America/Los_Angeles</user_tz>
<today>{{ today_iso }}</today>

<format>
{
  "is_meeting": true,
  "title": "string",
  "start": "ISO-8601 with timezone",
  "end": "ISO-8601 with timezone",
  "attendees": ["string"],
  "location": "string or null",
  "notes": "string or null"
}
</format>

<email>{{ email_body }}</email>

Return inside <result> tags.

Sample input

Hi — let's sync on the launch this Thursday at 3pm PT for 30 min. Zoom: https://zoom.us/j/123. — Sam

Expected output

<result>
{
  "is_meeting": true,
  "title": "Launch sync",
  "start": "2026-05-28T15:00:00-07:00",
  "end": "2026-05-28T15:30:00-07:00",
  "attendees": ["Sam"],
  "location": "https://zoom.us/j/123",
  "notes": null
}
</result>

Notes & tuning tips

• Passing and is what makes "this Thursday at 3pm" resolvable.
• If the email is ambiguous ("sometime next week"), the model should set is_meeting=false rather than guess.
• Validate the resulting ISO timestamp parses cleanly in your calendar library before showing the user the button.

What this example uses

Tags: <instructions> <context> <format>

Patterns: structured output

More like this