Event RSVP clips: invitation, reminder and last call from one avatar

An event RSVP sequence is three avatar clips from one presenter: an 18-second invitation, a 10-second reminder and an 8-second last call. That is 36 seconds, which costs $6.62 on Standard, $8.82 on Plus and $19.80 on Max.

Per-second rates are from Sume's public catalog and the avatar video guide, read 2026-10-04. The point is that each clip is its own job, so the reminder can change after the invitation is out without touching the first clip.

Three clips, three jobs

Shorter is better as the date nears: the invitation explains, the reminder confirms, the last call only pushes. All three stay far inside the 4 to 60 second window.

Submit the three in one script

A job per clip, each with its own idempotency key. This stdlib script posts the three requests and prints the job ids; it needs SUME_API_KEY in the environment and a ready avatar handle.

import json, os, urllib.request

KEY = os.environ['SUME_API_KEY']
CLIPS = {
    'invite': 'You are invited to our product day on the twentieth. Doors open at ten. Reserve your seat with the link below.',
    'reminder': 'Reminder: product day is this Thursday. Your seat is saved.',
    'last-call': 'Last call. Seats close tonight.',
}
for name, script in CLIPS.items():
    body = json.dumps({'avatar_handle': 'event_host', 'quality': 'standard', 'script': script}).encode()
    req = urllib.request.Request(
        'https://api.sume.com/v1/avatar-1.0/talking-video', data=body, method='POST',
        headers={'Authorization': f'Bearer {KEY}', 'Content-Type': 'application/json',
                 'Idempotency-Key': f'event-2026-10-{name}'})
    with urllib.request.urlopen(req) as r:
        print(name, json.load(r).get('request_id'))

When the date changes

A spoken date is baked into the render. If the event moves, re-render the clips that mention the date and keep the ones that do not. Write the last call without a date so it survives a small change, and say the weekday plus the date in the reminder.

Disclosure and timing

Send the invitation with a text line saying the host is AI-generated. Say in the clip, the caption or the page around it that the presenter is AI-generated; the API does not add that label for you. Space the three sends by your own calendar; Sume does not schedule delivery.