I was given this code as an example how to access Open AI through API using Python: import requests import json url = "ENDPOINT" API_KEY = "SECRET_KEY" payload = json.dumps({ "messages": [ { "role": "system", "content": "You are an AI assistant named Genie the Genious that helps people find information from enterprise documents." }, { "role": "user", "content": "how many faces does a cube have?" }, { "role": "assistant", "content": "A cube has six faces." }, { "role": "user", "content": "What is your name?" }, { "role": "assistant", "content": "" } ], "temperature": 0.8, "top_p": 1, "frequency_penalty": 0, "presence_penalty": 0, "max_tokens": 60, "stop": None }) headers = { 'api-key': API_KEY, 'Content-Type': 'application/json' } response = requests.request("POST", url, headers=headers, data=payload) I tried to translate this into R: library(httr) library(jsonlite) url = "ENDPOINT" api_key = "SECRET_KEY" # Create the payload as a JSON object payload <- toJSON(list( messages = list( list( role = "system", content = "You are an AI assistant named Genie the Genious that helps people find information from enterprise documents." ), list( role = "user", content = "how many faces does a cube have?" ), list( role = "assistant", content = "A cube has six faces." ), list( role = "user", content = "What is your name?" ), list( role = "assistant", content = "" ) ), temperature = 0.8, top_p = 1, frequency_penalty = 0, presence_penalty = 0, max_tokens = 60, stop = NULL ), auto_unbox = TRUE) # Set the request headers headers <- add_headers( `api-key` = api_key, `Content-Type` = "application/json" ) # Send the POST request to the API response <- POST(url, headers, body = payload) # Get the response content content <- content(response, as = "text") # Print the response cat(content) print(response) But I am getting this error: "error": { "message": "Invalid type for 'stop': expected one of a string or array of strings, but got an obje... "type": "invalid_request_error", "param": "stop", "code": "invalid_type" } It seems to have something to do with defining the payload but it is not clear to me how this can be modified so it can be recognised in the system through R? Any pointers greatly appreciated, I suspect this is not a hard question just need to get the format correct. Continue reading...