Create a share

curl -X POST https://api.craftkit.dev/v1/renders/$RENDER_ID/shares \
  -H "Authorization: Bearer $CRAFTKIT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "channel": "link", "expiresAt": "2026-12-31T23:59:59Z" }'

{
  "id": "…",
  "shareToken": "…",
  "shareUrl": "https://www.craftkit.dev/share/…",
  "channel": "link",
  "recipientEmail": null,
  "message": null,
  "expiresAt": "2026-12-31T23:59:59.000Z",
  "revokedAt": null,
  "createdAt": "2026-06-05T10:05:00.000Z"
}