import requests

url = "https://{FUSION HOST}/api/connectors/datasources"

payload = {
    "id": "test-data-source",
    "parserId": "api-test-app",
    "connector": "lucid.fileupload",
    "type": "fileupload",
    "pipeline": "api-test-app",
    "properties": {
        "fileId": "pokedex.json.zip",
        "description": "My test datasource"
    }
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "test-data-source",
  "created": "2024-08-02T21:00:42.165Z",
  "modified": "2024-08-02T21:00:42.165Z",
  "connector": "lucid.fileupload",
  "type": "fileupload",
  "pipeline": "api-test-app",
  "parserId": "api-test-app",
  "properties": {
    "description": "My test datasource",
    "fileId": "pokedex.json.zip",
    "mediaType": "application/octet-stream"
  }
}