Chatgpt Master Guide

# 1) Export your API key as an environment variable (Key-Chain Setup Method)
#    Keep the key out of source code and logs.
export OPENAI_API_KEY="put_your_key_here"

# 2) Call the Responses API with the Bearer token header.
curl https://api.openai.com/v1/responses \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4.1-mini",
    "input": "Return a JSON object with keys: status and note.",
    "response_format": { "type": "json_object" },
    "max_output_tokens": 120,
    "temperature": 0
  }'

# Python example using the same authentication pattern.
import os
import requests

api_key = os.environ["OPENAI_API_KEY"]  # Key-Chain Setup Method: read from env

url = "https://api.openai.com/v1/responses"
headers = {
    "Authorization": f"Bearer {api_key}",
    "Content-Type": "application/json",
}

payload = {
    "model": "gpt-4.1-mini",
    "input": "Return a JSON object with keys: status and note.",
    "response_format": {"type": "json_object"},
    "max_output_tokens": 120,
    "temperature": 0,
}

resp = requests.post(url, headers=headers, json=payload, timeout=30)
data = resp.json()
print(data)

{
  "id": "resp_12345",
  "object": "response",
  "created_at": 1720000000,
  "model": "gpt-4.1-mini",
  "output": [
    {
      "id": "out_1",
      "type": "message",
      "role": "assistant",
      "content": [
        { "type": "output_text", "text": "{\"status\":\"ok\",\"note\":\"...\"}" }
      ]
    }
  ],
  "usage": {
    "input_tokens": 12,
    "output_tokens": 34,
    "total_tokens": 46
  }
}