curl --request GET \
  --url https://openrouter.ai/api/v1/keys/{hash} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "byok_usage": 17.38,
    "byok_usage_daily": 17.38,
    "byok_usage_monthly": 17.38,
    "byok_usage_weekly": 17.38,
    "created_at": "2025-08-24T10:30:00Z",
    "creator_user_id": "user_2dHFtVWx2n56w6HkM0000000000",
    "disabled": false,
    "expires_at": "2027-12-31T23:59:59Z",
    "hash": "f01d52606dc8f0a8303a7b5cc3fa07109c2e346cec7c0a16b40de462992ce943",
    "include_byok_in_limit": false,
    "label": "Production API Key",
    "limit": 100,
    "limit_remaining": 74.5,
    "limit_reset": "monthly",
    "name": "My Production Key",
    "updated_at": "2025-08-24T15:45:00Z",
    "usage": 25.5,
    "usage_daily": 25.5,
    "usage_monthly": 25.5,
    "usage_weekly": 25.5,
    "workspace_id": "0df9e665-d932-5740-b2c7-b52af166bc11"
  }
}