curl -X DELETE https://api.agentcard.sh/api/v2/vault/presets/office-supplies/attachments \
  -H "Authorization: Bearer $ORG_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"kind": "card", "target_id": "CARD_ID"}'

{
  "object": "vault_preset",
  "name": "office-supplies",
  "id": "cmtvwbc0g000bjpcc88yiyx8z",
  "version": 1,
  "summary": "Up to $50.00 per day. Merchants: EXAMPLE SHOP, ACME. Currency: USD.",
  "attachments": []
}