curl --request POST \
  --url https://backend.overtenai.com/api/v1/files \
  --header 'Content-Type: multipart/form-data' \
  --form 'file=<string>' \
  --form purpose=context

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}