curl --request POST \
  --url https://agents.textin.com/doc-agent/api/v1/capability/material/classify \
  --header 'Content-Type: multipart/form-data' \
  --header 'x-ti-app-id: <x-ti-app-id>' \
  --header 'x-ti-secret-code: <x-ti-secret-code>' \
  --form files='@example-file' \
  --form material_id=8ffe03ce-4714-4b50-8daf-afee06002cc3

{
  "code": 200,
  "data": {
    "materials": [
      {
        "category": "费用与结算",
        "material_id": "8ffe03ce-4714-4b50-8daf-afee06002cc3",
        "material_type": "医疗门诊收费票据(电子)"
      },
      {
        "category": "费用与结算",
        "material_id": "27734e23-3482-42a3-98d7-1bdb369118bc",
        "material_type": "住院费用明细清单"
      }
    ]
  },
  "message": "OK"
}