import requests
import json

url = "https://api.stack-ai.com/inference/v0/run/{org_id}/{flow_id}"
headers = {
"Authorization": "Bearer <your-public-key>",
"Content-Type": "application/json"
}
data = json.dumps({"in-0": "message", "user_id": "conversation identifier"})

response = requests.post(url, headers=headers, data=data)

print(response.json())