# Read an appointment

Read one appointment on the caller's calendar.

Returns the appointment with that id on the caller's calendar. The organizer's row includes `notes` and `guests`. A guest's invite includes `title`, `startsAt`, `endsAt`, `organizer`, and `status`.

A missing id is `404` with `{ "error": "…" }`.

## Authentication

`Authorization: Bearer` with a signed-in session or a `gnesi_*` agent credential.

## Response

`appointment`.

```sample
curl "https://api.gnesi.io/v1/appointments/appointment_123" \
  -H "Authorization: Bearer $GNESI_CREDENTIAL"
```

```result
{
  "appointment": {
    "id": "appointment_123",
    "title": "Intro",
    "startsAt": "2026-10-20T15:00:00.000Z",
    "endsAt": "2026-10-20T15:30:00.000Z",
    "notes": "Bring the brief.",
    "status": "confirmed",
    "organizer": "ada@gnesi.io",
    "guests": ["mina@gnesi.io"]
  }
}
```