Here’s a basic Python sample for interacting with the TD Ameritrade API using the requests library. This example demonstrates how to:

1. Authenticate using an access token.
2. Fetch account details.
3. Retrieve live market quotes for a stock.
4. Place an order.

Setup

Before running the code, ensure you have:

• A TD Ameritrade Developer Account.
• An API Key (Consumer Key).
• An OAuth Access Token (required for authenticated requests).

Install Dependencies

pip install requests

Python Code

import requests
import json

# TD Ameritrade API credentials
API_KEY = "YOUR_API_KEY_HERE" # Consumer Key from TD Ameritrade Developer Account
ACCESS_TOKEN = "YOUR_ACCESS_TOKEN_HERE" # OAuth Access Token
ACCOUNT_ID = "YOUR_ACCOUNT_ID_HERE" # Your TD Ameritrade Account Number

# Base URL
BASE_URL = "https://api.tdameritrade.com/v1"

# Headers for authentication
HEADERS = {
 "Authorization": f"Bearer {ACCESS_TOKEN}",
 "Content-Type": "application/json"
}

# 1️⃣ Fetch Account Details
def get_account_info():
 url = f"{BASE_URL}/accounts/{ACCOUNT_ID}"
 response = requests.get(url, headers=HEADERS)
 return response.json()

# 2️⃣ Get Stock Quote
def get_stock_quote(symbol):
 url = f"{BASE_URL}/marketdata/{symbol}/quotes"
 response = requests.get(url, headers=HEADERS)
 return response.json()

# 3️⃣ Place an Order (Example: Buy 1 share of AAPL at Market Price)
def place_order():
 url = f"{BASE_URL}/accounts/{ACCOUNT_ID}/orders"
 
 order_payload = {
 "orderType": "LIMIT",
 "session": "NORMAL",
 "duration": "DAY",
 "orderStrategyType": "SINGLE",
 "orderLegCollection": [
 {
 "instruction": "BUY",
 "quantity": 1,
 "instrument": {
 "symbol": "AAPL",
 "assetType": "EQUITY"
 }
 }
 ],
 "price": "170.00" # Replace with the desired price
 }

 response = requests.post(url, headers=HEADERS, json=order_payload)
 return response.json()

# Run functions
if __name__ == "__main__":
 print("Fetching Account Info...")
 print(json.dumps(get_account_info(), indent=4))

 print("nFetching Stock Quote for AAPL...")
 print(json.dumps(get_stock_quote("AAPL"), indent=4))

 print("nPlacing Order for AAPL...")
 print(json.dumps(place_order(), indent=4))

Key Features

✅ Fetch account details – Retrieves balances and positions.
✅ Get stock quote – Fetches the latest market price for a given stock symbol.
✅ Place a stock order – Sends a limit order to buy 1 share of AAPL.