curl --request DELETE \
  --url https://api.example.com/v1/projects/{project_id}/indexes/{index_id} \
  --header 'x-api-key: <api-key>' \
  --header 'x-selected-account-id: <api-key>'

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