curl -X POST https://api.chargeapi.co/v1/reservations/res_k5VXjQAdSJx6Mg9iPw7OAjGzXP42Lvqq/cancel \
  -H "Authorization: Bearer ch_sk_test_..." \
  --json '{}'

{
    "id": "res_k5VXjQAdSJx6Mg9iPw7OAjGzXP42Lvqq",
    "object": "reservation",
    "cancellation_policy": {
        "free_until_before": 1800,
        "type": "free_cancellation"
    },
    "charging_station": "chst_Hyw5CaUqODp6ANbdqjXlzbRXWNScdiIW",
    "confirmed_at": "2026-04-01T01:08:12.480Z",
    "connector_type": ["CCS"],
    "created": "2026-04-01T00:40:25.838Z",
    "currency": "eur",
    "driver": "drv_uSECaMA1R5LW7udEdnW6nmQ5rz6eHor6",
    "earliest_start": null,
    "failed_reason": null,
    "ideal_end": "2026-04-01T03:10:21.561Z",
    "ideal_start": "2026-04-01T01:40:23.381Z",
    "latest_end": null,
    "location": {
        "latitude": 48.8698,
        "longitude": 2.3319,
        "radius": 1500
    },
    "metadata": {},
    "payment_method": "pm_M9ZjflkWuYp82lH7ow4gFwhdxa1eqGxa",
    "reservation_fee": 1200,
    "reserved_end": "2026-04-01T03:09:54.276Z",
    "reserved_start": "2026-04-01T01:40:18.627Z",
    "status": "cancelled",
    "updated": "2026-04-01T01:38:06.924Z",
    "vehicle": "veh_1mQkD2fvFpsQcWjTjh3vCBT9H5jHRfV4"
}