curl --request POST \
  --url https://public-api.stora.co/2025-09/deals/{deal_id}/lose \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "lost_reason": "accessibility_concern"
}
'

{
  "deal": {
    "id": "deal_127b3057d5df338e",
    "assignee": null,
    "contact": {
      "id": "con_1234567890abcdef"
    },
    "created_at": "2025-02-22T14:41:00Z",
    "creator": {
      "id": "staff_947b3057d5df338e"
    },
    "line_items": [
      {
        "item": {
          "id": "plvl_e8f3ad0a07e47566"
        },
        "quantity": 1,
        "type": "protection"
      },
      {
        "item": {
          "id": "utype_f18fc91387cdf710"
        },
        "quantity": 1,
        "type": "unit_type"
      }
    ],
    "lost_reason": "price_concerns",
    "name": "First Deal",
    "site": null,
    "stage": {
      "id": "dstg_127b3057d5df338e"
    },
    "starts_at": null,
    "status": "lost",
    "updated_at": "2025-02-22T14:41:00Z",
    "value_estimate": "£50 per month"
  },
  "meta": {
    "request_id": "01563646-58c1-4607-8fe0-cae3e92c4477",
    "curies": [
      {
        "name": "bo",
        "href": "https://app.stora.test{rel}",
        "templated": true,
        "title": "Backoffice"
      },
      {
        "name": "sf",
        "href": "https://acme.stora.test{rel}",
        "templated": true,
        "title": "Storefront"
      }
    ]
  }
}